5

# Section 11.5 Exercise 13-TQuestion Holpsurvey 0f 25 randomly sclocted customers found the ag0s shown (in years) . The mean Is 31.60 years and the standard deviation...

## Question

###### Section 11.5 Exercise 13-TQuestion Holpsurvey 0f 25 randomly sclocted customers found the ag0s shown (in years) . The mean Is 31.60 years and the standard deviation is 91 years: a) Construct 80% confidence interval Ior the mean ag0 of all customers , assuming that tho assumptions and conditions for the confidence interval have been met; D) How large tho margin 0f emor? c) How would the confidence Interval change you had assumed that the standard deviation was krown to be 10.0 years?385] 3322 1

Section 11.5 Exercise 13-T Question Holp survey 0f 25 randomly sclocted customers found the ag0s shown (in years) . The mean Is 31.60 years and the standard deviation is 91 years: a) Construct 80% confidence interval Ior the mean ag0 of all customers , assuming that tho assumptions and conditions for the confidence interval have been met; D) How large tho margin 0f emor? c) How would the confidence Interval change you had assumed that the standard deviation was krown to be 10.0 years? 385] 3322 16 47 27 33 31 21 What ( Ine coniidence interval? (28.99 34.21 Section 11.7 Exercise 20 Question Help A random sample of the amounts for 18 purchases was taken. The mean was S42.93,the standard deviation was S22.39, and the margin of error for a 95% confidence interval was 511.13_ Assume that tn 2.0 for the 95% confidence intervals . a) To reduce the margin of error to about S5, how large would the sample size have t0 be? b) How large would the sample size have to be to reduce the margin of error to S1.1? a) The new sample size should be (Round up t0 the nearest integer:)

#### Similar Solved Questions

##### Their multipliciti For the matrix, list the real Eigen values, repeated according4 -2 0The real eigenvalues are_
their multipliciti For the matrix, list the real Eigen values, repeated according 4 -2 0 The real eigenvalues are_...
##### What is the centripetal acceleration of a point on the perimeter of bicycle wheel of diameter 70 cm when the bike is moving 8.0 m/s?1) 91 m/s22) 1.8 x 102 m/s23) 2.1 x 102 m/s22.7x 102 m/s2
What is the centripetal acceleration of a point on the perimeter of bicycle wheel of diameter 70 cm when the bike is moving 8.0 m/s? 1) 91 m/s2 2) 1.8 x 102 m/s2 3) 2.1 x 102 m/s2 2.7x 102 m/s2...
##### 5 . fes dxHint: Integrate by parts with U-substitution)Solution:
5 . fes dx Hint: Integrate by parts with U-substitution) Solution:...
##### (14 points) Use eigenvaluex and eigenvectors to liud the general solution of the following system;AxwliereHId X =-10
(14 points) Use eigenvaluex and eigenvectors to liud the general solution of the following system; Ax wliere HId X = -10...
##### Solld phosphorusand chlorlneqas react t0 fomm solid phosphorus pentachloride (PCL;) Suppose you have 0 mol of P and 2.0 mol of Clz In areactorCalculate the largest amount of PCI = that could be produced_ Round your answer to the nearest 0.1 mol.molLro
Solld phosphorus and chlorlne qas react t0 fomm solid phosphorus pentachloride (PCL;) Suppose you have 0 mol of P and 2.0 mol of Clz In a reactor Calculate the largest amount of PCI = that could be produced_ Round your answer to the nearest 0.1 mol. mol Lro...
##### Une *uchon PAp cr dC_crIb study Eyalutc driving andthc Icllowing dlstance (thc distance bctwcenToblle Phonc UYtaxi dntens Grcece FIlycajOrycns droyc dntno Gimuator Wnac Iy Wcre rolloninc Jce] CalInc dnjcns nerc a5co Icac cari W05 rcconcco Thr samplc mcan lollowing distarce Ios 16J mctcn ard tne cmpic stuncard Ocvljtlon wos !.15 meters.contersationmobilc phore whilctajwndUSE SALTConstruct < 95*3 cordlccnce rteryMelerseopulabo mcan lollowinj distancc nhilc tolkingmobllc Fnc]populdtiondnvcns (R
Une *uchon PAp cr dC_crIb study Eyalutc driving andthc Icllowing dlstance (thc distance bctwcen Toblle Phonc UY taxi dntens Grcece FIlycajOrycns droyc dntno Gimuator Wnac Iy Wcre rolloninc Jce] CalInc dnjcns nerc a5co Icac cari W05 rcconcco Thr samplc mcan lollowing distarce Ios 16J mctcn ard tne c...
##### 10 pointsSuve AnswerTwo identical charges (Q1 = 92 ) repel each other with a force magnitude of F = 10 N, when they are 2 cm apart How big are the charges? [ &0 = 8.85 x 10-12 c2I(Nm2) ]6.7 mC045 . 10-12 â‚¬06.7. 10-13 â‚¬0.67 uCType here t0 search
10 points Suve Answer Two identical charges (Q1 = 92 ) repel each other with a force magnitude of F = 10 N, when they are 2 cm apart How big are the charges? [ &0 = 8.85 x 10-12 c2I(Nm2) ] 6.7 mC 045 . 10-12 â‚¬ 06.7. 10-13 â‚¬ 0.67 uC Type here t0 search...
##### Find and classify the relative extrema of f(") 21V' %r +))+1
Find and classify the relative extrema of f(") 21V' %r +))+1...
##### The higher would [ have compounds folowing [ Iwo Whleh 'otito and (why? bonne [ 'polt &A has the higher boiling point because it Compound has = higher dipole moment Compound has the higher boiling point because it can more easily hydrogen bond with another molecule Compound B has the higher boiling point because it has higher dipole momentCompound B has the higher boiling more easily 'hydrogen bond with point because it can another molecule OTfey bolh have the same differ in t
the higher would [ have compounds folowing [ Iwo Whleh 'otito and (why? bonne [ 'polt & A has the higher boiling point because it Compound has = higher dipole moment Compound has the higher boiling point because it can more easily hydrogen bond with another molecule Compound B has the ...
##### Dizzy physics student(fill in name) is spinning on our near-frictionless blue thing while holding weights. The weights each have a mass of 10 kg: We can assume that the student measures meter from hand to sternum; and shoulders are 5 meters wide: The weights can be considered particles: the student is spun at an initial angular speed of 2 revolutions per second with the hands extended, what is the new angular speed when the weights are pulled into the shoulders?metermeters
dizzy physics student (fill in name) is spinning on our near-frictionless blue thing while holding weights. The weights each have a mass of 10 kg: We can assume that the student measures meter from hand to sternum; and shoulders are 5 meters wide: The weights can be considered particles: the student...
##### A social researcher claims that the average adult Iistens to the radio less than 26 hours per week: He collects data on 25 individuals' radio listening habits and finds that the mean number of hours that the 25 people spent listening to the radio was 22.4 hours: If the population standard deviation is known t0 be eight hours, what is the p-value associated with the test statistic?Select one:0.02440.01220.00990.03640.0198
A social researcher claims that the average adult Iistens to the radio less than 26 hours per week: He collects data on 25 individuals' radio listening habits and finds that the mean number of hours that the 25 people spent listening to the radio was 22.4 hours: If the population standard devia...
##### 2_ Let f (x,y) e'y and f(t) = {t+Vztj lntk_ Answer each of the following: Find the domain and range of f (x,y): Find the domain of f(t). Sketch the level curves of f(x,y) #exy =C,where c=14- Find the limits, lim(xy)-(1,lnz)f (x,y), and limt-0 Ei+Vztj _ sin (D kif exist. Find the arc length of f(t) from t = 1to t = 2 (vi) Find equations of the tangent line and normal line to the level curve of f(x,y) e*Y passing through the point (1,ln2 ) (vii) Find equations of the tangent plane and normal
2_ Let f (x,y) e'y and f(t) = {t+Vztj lntk_ Answer each of the following: Find the domain and range of f (x,y): Find the domain of f(t). Sketch the level curves of f(x,y) #exy =C,where c=14- Find the limits, lim(xy)-(1,lnz)f (x,y), and limt-0 Ei+Vztj _ sin (D kif exist. Find the arc length of f...
##### 14. Draw curved arrows for the following mechanistic stepMe15. Will the following cation undergo rearrangement? Why or why not?
14. Draw curved arrows for the following mechanistic step Me 15. Will the following cation undergo rearrangement? Why or why not?...
##### 11.- What do gill lamellae and the infoldings in Anuran lungs havein common?- How do both of these structures help to maximize function?
11. - What do gill lamellae and the infoldings in Anuran lungs have in common? - How do both of these structures help to maximize function?...
##### Find the areas of the surfaces generated by revolving the curves in Exercises $31-34$ about the indicated axes. $$x=(2 / 3) t^{3 / 2}, \quad y=2 \sqrt{t}, \quad 0 \leq t \leq \sqrt{3} ; \quad y$$
Find the areas of the surfaces generated by revolving the curves in Exercises $31-34$ about the indicated axes. $$x=(2 / 3) t^{3 / 2}, \quad y=2 \sqrt{t}, \quad 0 \leq t \leq \sqrt{3} ; \quad y$$...
##### QuestionG0.71/1 ptIn 2011, U.5. Census report determined that 57% of collegc students are working students _ rescarcher thinks this percentage has changed and sUrveys 162 college students_ The researcher reports that 81 of the 162 are working students; there evidence to support the researchers clalmn at the I% significance level?Determine the null and alternative hypotheses-Hj; P(Select the correct Jmbol and enter the value )Determine the test statistic. Round to two decinal places.Find the 
Question G0.71/1 pt In 2011, U.5. Census report determined that 57% of collegc students are working students _ rescarcher thinks this percentage has changed and sUrveys 162 college students_ The researcher reports that 81 of the 162 are working students; there evidence to support the researchers cla...