Question
In a 4-week study about the effectiveness of using magnetic insoles to treat plantar heel pain,...
In a 4-week study about the effectiveness of using magnetic insoles to treat plantar heel pain, 52 subjects wore magnetic insoles and 41 subjects wore nonmagnetic insoles. The results are shown at the right. At a =0.06, can you support the claim that there is a difference in the proportion of subjects who feel better between the two groups? Assume the random samples are independent. Complete parts (a) through (e). Do you Feel Better? Magnetic Insoles Yes 14 No 38 Nonmagnetic Insoles Yes 16 No 25 (a) Identify the claim and state Ho and H, The claim is "the proportion of subjects who feel better with magnetic Insoles is different than those who feel better with nonmagnetic insoles." Let P, represent the population proportion for the magnetic insoles and P2 represent the population proportions for the nonmagnetic insoles. State Ho and H. Click to select your answer(s).
Do you Feel Better? Magnetic Insoles Yes 14 No 38 In a 4-week study about the effectiveness of using magnetic insoles to treat plantar heel pain, 52 subjects wore magnetic insoles and 41 subjects wore nonmagnetic insoles. The results are shown at the right. At a = 0.06, can you support the claim that there is a difference in the proportion of subjects who feel better between the two groups? Assume the random samples are independent. Complete parts (a) through (e) Nonmagnetic Insoles Yes 16 No 25 A. Ho: P1>P2 Ha: P1 SP2 OD. Ho: P, SP2 Ha: P1>P2 B. Ho: P1 P2 Ha:P12P2 O E. Ho: P12P2 Ha: PP2 OC. Ho: P1 P2 Ha: P1 - P2 F. Ho: P1 = P2 Ha:P P2 Click to select your answer(s).
Do you Feel Better? Magnetic Insoles Yes 14 No 38 In a 4-week study about the effectiveness of using magnetic insoles to treat plantar heel pain, 52 subjects wore magnetic insoles and 41 subjects wore nonmagnetic insoles. The results are shown at the right. At a =0.06, can you support the claim that there is a difference in the proportion of subjects who feel better between the two groups? Assume the random samples are independent. Complete parts (a) through (e). Nonmagnetic Insoles Yes 16 No 25 (b) Find the critical value(s) and identify the rejection region(s) The critical value(s) is(are) (Use a comma to separate answers as needed. Type an integer or a decimal, Round to two decimal places as needed.) Identify the rejection region(s). Select the correct choice below and fill in the answer box(es) within your choice. (Round to two decimal places as needed nere
Do you Feel Better? Magnetic Insoles Yes 14 | No 38 In a 4-week study about the effectiveness of using magnetic insoles to treat plantar heel pain, 52 subjects wore magnetic insoles and 41 subjects wore nonmagnetic insoles. The results are shown at the right. At a = 0.06, can you support the claim that there is a difference in the proportion of subjects who feel better between the two groups? Assume the random samples are independent. Complete parts (a) through (e) Nonmagnetic Insoles Yes 16 No 25 Identify the rejection region(s). Select the correct choice below and fill in the answer box(es) within your choice. (Round to two decimal places as needed.) O A. z OC OB. z> OD 2 and z> <z< Click to select your answer(s).
Do you Feel Better? Magnetic Insoles Yes 14 No 38 In a 4-week study about the effectiveness of using magnetic insoles to treat plantar heel pain, 52 subjects wore magnetic insoles and 41 subjects wore nonmagnetic insoles. The results are shown at the right. At a = 0.06, can you support the claim that there is a difference in the proportion of subjects who feel better between the two groups? Assume the random samples are independent. Complete parts (a) through (e) Nonmagnetic Insoles Yes 16 No 25 Z (c) Find the standardized test statistic. (Round to two decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis. Choose the correct answer below. Click to select your answer(s).
Do you Feel Better? Magnetic Insoles Yes 14 No 38 In a 4-week study about the effectiveness of using magnetic insoles to treat plantar heel pain, 52 subjects wore magnetic insoles and 41 subjects wore nonmagnetic insoles. The results are shown at the right. At a = 0.06, can you support the claim that there is a difference in the proportion of subjects who feel better between the two groups? Assume the random samples are independent. Complete parts (a) through (e) Nonmagnetic Insoles Yes 16 No 25 1 uur WWIU W TUJUE UE TUIN TUJUMI TUUUU Choose the correct answer below. O Fail to reject He because the test statistic is in the rejection region. O Fail to reject He because the test statistic is not in the rejection region. Dolart horsnee tha teetetatietie le in the raiartinn raninn Click to select your answer(s).
Do you Feel Better? Magnetic Insoles Yes 14 No 38 In a 4-week study about the effectiveness of using magnetic insoles to treat plantar heel pain, 52 subjects wore magnetic insoles and 41 subjects wore nonmagnetic insoles. The results are shown at the right. At a = 0.06, can you support the claim that there is a difference in the proportion of subjects who feel better between the two groups? Assume the random samples are independent. Complete parts (a) through (e) Nonmagnetic Insoles Yes 16 No 25 Reject Ho because the test statistic is in the rejection region. Reject Ho because the test statistic is not in the rejection region. (e) Interpret the decision in the context of the original claim. Choose the correct answer below. Click to select your answer(s).
Do you Feel Better? Magnetic Insoles Yes 14 No 38 In a 4-week study about the effectiveness of using magnetic insoles to treat plantar heel pain, 52 subjects wore magnetic insoles and 41 subjects wore nonmagnetic insoles. The results are shown at the right. At a =0.06, can you support the claim that there is a difference in the proportion of subjects who feel better between the two groups? Assume the random samples are independent. Complete parts (a) through (e) Nonmagnetic Insoles Yes 16 No 25 O A. At the 6% significance level, there is sufficient evidence to support the claim. B. At the 6% significance level, there is insufficient evidence to support the claim. C. At the 6% significance level, there is insufficient evidence to reject the claim. D. At the 6% significance level, there is sufficient evidence to reject the claim.
Answers
Answer Date: 31/07/2020 a) To test the claim is that the proportion of subjects who feel better with magnetic insoles is different than those who feel better with nonmagnetic insoles. The null and alternative hypothesis is, H: P. = P2 H.: P. P2 b) The Z-critical value is, From the standard normal table, the z-critical value for two-tailed at 94% confidence is 1.88. The Z-critical value is -1.88, 1.88The rejection region is, Reject the null hypothesis, if the z-test statistics is less than the z-critical value which is - 1.88. Reject the null hypothesis, if the Z-test statistics is higher than the z-critical value which is 1.88. The correct option is D The z-test statistics is, First, compute pooled proportion then find the z-test statistics. The pooled proportion is, p = x₂ + x₂ M + h 14 +16 52 +41 = 0.3226 =The z-test statistics is, Pi - P2 Z= 1 1 p(1 - p) + n n2 14/52 - 16/41 1 1 0.3226(1 -0.3226) X + 52 41 = -1.24 The Z-test statistics is -1.24 d) Decision The z-test statistics is -1.24 is not falls in the critical region which is -1.88, so fail to reject the null hypothesis is rejected at 6% level of significance. The correct option is 2e) Conclusion There is insufficient evidence to support the claim that there is a difference in proportion of subjects who feel better between the two groups. The result is not statistically significant. The correct option is B
Similar Solved Questions
1 answers
Use the method of Laplace transforms and the accompanying proof results to solve the initial value...
Use the method of Laplace transforms and the accompanying proof results to solve the initial value problem. Af(t) 4 y"' + 3y' + 2y = f(t); y(0) = 0, y'(0) = 0 Here, f(t) is the periodic function defined in the graph to the right. Click the icon to review the results of a proof. 0 16 ...
1 answers
NASA is conducting an experiment to find out the fraction of people who black out at...
NASA is conducting an experiment to find out the fraction of people who black out at G forces greater than 6. In an earlier study, the population proportion was estimated to be 0.46. How large a sample would be required in order to estimate the fraction of people who black out at 66 or more Gs at th...
1 answers
Quantitative Problem: Bellinger Industries is considering two projects for inclusion in its capital budget, and you...
Quantitative Problem: Bellinger Industries is considering two projects for inclusion in its capital budget, and you have been asked to do the analysis. Both projects' after-tax cash flows are shown on the time line below. Depreciation, salvage values, net operating working capital requirements, ...
1 answers
Compute the test value. Does is reject the null hypothesis and is there enough evidence to...
compute the test value. Does is reject the null hypothesis and is there enough evidence to support the claim that the average commute in his city is less than 25.4 Question 2 of 3 (1 point) View problem in a pop-up 8.3 Section Exercise 10 The National Novel Writing Association states that the averag...
1 answers
Discus the weaknesses of the conventional doctrines of strategic management.
Discus the weaknesses of the conventional doctrines of strategic management....
1 answers
Solving for V1 and V2, V=10 volts, thanks for answering the problem 2 Mate 20
solving for V1 and V2, V=10 volts, thanks for answering the problem 2 Mate 20...
1 answers
Using Python 3.x to solve this problem Create a class called ASCIIDecoder this class should: A....
Using Python 3.x to solve this problem Create a class called ASCIIDecoder this class should: A. Be an iterable object _iter_) B. Be an iterator _next_) Since it is an iterator of itself, the_iter__call should just initialize any variables used for iteration and return self. Functionally the ASCII de...
1 answers
Using the Rxs below determine the value of Delta G o (in kJ) for this reaction...
Using the Rxs below determine the value of Delta G o (in kJ) for this reaction Using the Rxs below determine the value of AGº (in kJ) for this reaction. Rx: N2O(g) + NO2(g) → 3NO(g) Rx1: 2NO(g) + O2(g) → 2NO2(g) AG°= —71.2 kJ Rx2: N2(g) + O2(g) → 2NO(g) AG° = + 1...
1 answers
Draw the following: B-D-allopyranose-(1>3)-a-D-altropyranose. Is it a reducing sugar? 3.
Draw the following: B-D-allopyranose-(1>3)-a-D-altropyranose. Is it a reducing sugar? 3....
1 answers
[3] A wire of radius a carries a uniform current density given by which is directed...
[3] A wire of radius a carries a uniform current density given by which is directed out of the page as shown. The wire carries a total current I. (a) Which direction does the magnetic field circulate around the wire? (circle the correct answer below). (b) Calculate the magnitude of the current densi...
1 answers
6 Exercise 4-9 Recording purchases, sales, returns, and shipping LO P1, P2 Following are the merchandising...
6 Exercise 4-9 Recording purchases, sales, returns, and shipping LO P1, P2 Following are the merchandising transactions of Dollar Store. nts Nov. 1 Dollar Store purchases merchandise for $1,100 on terms of 2/5, n/30, FOB shipping point, invoice dated November 1. 5 Dollar Store pays cash for the Nove...
1 answers
Of January 14 Begin Date: 1/10/2019 11:00:00 AM-Due D (18%) Problem 4: After being abandoned by...
of January 14 Begin Date: 1/10/2019 11:00:00 AM-Due D (18%) Problem 4: After being abandoned by his crew on an island in the and set out to sea on it. The wind seems quite steady, at first north of east him gently 14 degrees south of east, and after traveling for 2/ km in that direction, he finds hi...
1 answers
How would you explain the Phillip curve / what does one to have in mind when...
How would you explain the Phillip curve / what does one to have in mind when drawing the Phillip curve? Do we need to first understand the relationship between unemployment and inflation?...
1 answers
The bacterial replication machinery has been isolated and examined in vitro. The best way to learn...
The bacterial replication machinery has been isolated and examined in vitro. The best way to learn about the replication apparatus is to isolate it and them examine how each part works by itself and in concert with the other parts. Kornberg and coworkers worked very hard purifying all enzymes requir...
1 answers
Q11 a) Discuss the errors in the experiment of Specific heat capacity of water, how could...
Q11 a) Discuss the errors in the experiment of Specific heat capacity of water, how could to minimize those errors (not less than 50 words). (6 Marks) b) How to minimize the errors the experiment of vapor compression refrigeration cycle and heat pump (not less than 50 words). (6 Marks)...
1 answers
0 CellBase Technologies manufactures capacitors for cellular base stations and other communications applications. The company's July...
0 CellBase Technologies manufactures capacitors for cellular base stations and other communications applications. The company's July 2018 flexible budget shows output levels of 9,000, 10,500, and 12,500 units. The stalic budget was based on expected sales of 10,500 units. The company sold 12.500...
1 answers
A nurse is working with a community emergency response team (CERT) to develop advanced planning activities...
A nurse is working with a community emergency response team (CERT) to develop advanced planning activities for an impending tornado at a local county fair. Which type of advanced planning activities are needed? A. Pre-hospital, hospital, and release planning B. Emergent, rapid response, and triage p...