d. In both SRSS, the shape of 2. The distribution of the number of hours slept on school nights for students at a local high school has a mean of 6.3 hours, a standard deviation of 0.81 hours, and is strongly skewed left. Suppose we select a random sample of size 50 and a random sample of size 100 of students at the high school. Let x = the sample mean number of hours slept for students in the sample of size 50 and = the sample mean number of hours slept for students in the sample of size 100. Which of the following correctly describes the shape of the sampling distribution of and y? In both SRSS, the shape of the sampling distribution will be skewed left, but not quite as strongly as the population. b. In the SRS of size 50 the shape of the sampling distribution will be skewed left, but not quite as strongly as the population, and in the SRS of size 100 the shape of the sampling distribution will be approximately normal. a. C. In the SRS of size 100 the shape of the sampling distribution will be skewed left, but not quite as strongly as the population, and in the SRS of size 50 the shape of the sampling distribution will be approximately normal. d. In both SRSS, the shape of the sampling distribution will be approximately normal.
d. In both SRSS, the shape of 2. The distribution of the number of hours slept on school nights for students at a local high school has a mean of 6.3 hours, a standard deviation of 0.81 hours, and is strongly skewed left. Suppose we select a random sample of size 50 and a random sample of size 100 of students at the high school. Let x = the sample mean number of hours slept for students in the sample of size 50 and = the sample mean number of hours slept for students in the sample of size 100. Which of the following correctly describes the shape of the sampling distribution of and y? In both SRSS, the shape of the sampling distribution will be skewed left, but not quite as strongly as the population. b. In the SRS of size 50 the shape of the sampling distribution will be skewed left, but not quite as strongly as the population, and in the SRS of size 100 the shape of the sampling distribution will be approximately normal. a. C. In the SRS of size 100 the shape of the sampling distribution will be skewed left, but not quite as strongly as the population, and in the SRS of size 50 the shape of the sampling distribution will be approximately normal. d. In both SRSS, the shape of the sampling distribution will be approximately normal.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
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Transcribed Image Text:d.
In both SRSs, the shape of the sall
1
2. The distribution of the number of hours slept on school nights for students at a local high school has a mean
of 6.3 hours, a standard deviation of 0.81 hours, and is strongly skewed left. Suppose we select a random
sample of size 50 and a random sample of size 100 of students at the high school. Let x = the sample mean
number of hours slept for students in the sample of size 50 and = the sample mean number of hours slept
for students in the sample of size 100. Which of the following correctly describes the shape of the sampling
distribution of x and y?
In both SRSs, the shape of the sampling distribution will be skewed left, but not quite as
strongly as the population.
b.
In the SRS of size 50 the shape of the sampling distribution will be skewed left, but not
quite as strongly as the population, and in the SRS of size 100 the shape of the sampling
distribution will be approximately normal.
a.
C.
In the SRS of size 100 the shape of the sampling distribution will be skewed left, but not
quite as strongly as the population, and in the SRS of size 50 the shape of the sampling
distribution will be approximately normal.
d.
In both SRSS, the shape of the sampling distribution will be approximately normal.
number
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