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What is the test statistic for this problem?13.88 ~ 14 0.24 and this has a t-distribution V1613.88 14 0.24 and this has a Z (normal) distribution V1613.88 14 and th...

Question

What is the test statistic for this problem?13.88 ~ 14 0.24 and this has a t-distribution V1613.88 14 0.24 and this has a Z (normal) distribution V1613.88 14 and this has a t-distribution 0,2413.88 14 and this has a Z (normal) distribution 0,24

What is the test statistic for this problem? 13.88 ~ 14 0.24 and this has a t-distribution V16 13.88 14 0.24 and this has a Z (normal) distribution V16 13.88 14 and this has a t-distribution 0,24 13.88 14 and this has a Z (normal) distribution 0,24



Answers

Find the indicated probability of the standard normal random variable $Z$. $$P(Z<-2.56 \text { or } Z>1.39)$$

In this question. We want to find the shaded area under the standard Normal Distribution Co. We want to find a probability in which a sample the is between negative 1.12 and 0.24

Crap. We want to find the indicated probability for the standard normal random variable Z probability that Z is less than negative 0.38 or that C is greater than 1.93 This question is challenging and understanding of standard normal probability distributions in particular how to find probabilities related disease scores. So to solve, but we need to do is first sketch this situation out. So we're looking for the area and yellow where the sum of the two yellow areas. The first is the left, a negative 20.38 The right is the right of 1.93 to find these areas. And some were going to use a table which maps negative Z scores under the probability to left of the Z score. So for the area and left as equals negative 0.38 We use the table directly to obtain this probability for the probability is greater than 1.93 We need to use the first property, the symmetry, the standard or distribution, which is that the area to the left of the negative Z score is the same as the area to the right of the positive Z score. From this 15 solution are probabilities equal to probabilities is less than negative 150.38 plus. The probability is less than negative. 1.93 Using the symmetry equals total 0.3788

In this question. We want to find the shaded area under standard normal distribution cough. We want to find the probability in which a sample Z is between zero and 1.96 We can calculate this value using the normal CDF function on a graphic calculator. Since this is a standard normal distribution, we sent the mean to zero and standard deviation toe one for the other parameters. We said the upper bound to 1.96 and the low about 20 The result is 0.4750

Uh huh. We want to find the indicated probability for the standard normal random variable D. For the probability that V. Is less than negative 0.61 This question is testing as you're sharing on the standard normal probability distribution. So let's first sketch out this personality to understand it. We're looking for the area highlighted in yellow. So after the D score negative 0.61 to solve, we're going to use a Z. Table which mass negative Z scores under the probability left. To solve for areas related to positive Z scores. We rely on the symmetry of the standard distribution. We also can rely on the fact that the area, the left and right of any particular Z scores one to solve for any given area between the scores or related to any of the score on the standard model. So because there's the score here is negative and because we're looking for the probability to left of that C. Score, we simply used a Z table straightforward. Thus we have the problem Z is less than negative 0.61 is 0.2709 from the Z team or


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