8.1.15 Suppose a simple random sample of size n 49 is obtained from a population with u 79 and a =14. (a) Describe the sampling distribution of x. (b) What is P (x> 82.9)? (c) What is P (xs74.7)? (d) What is P (76.3 82.9)= Enter your answer In the answer box and then click Check Answer. Clear All parts remaining

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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8.1.15
Suppose a simple random sample of size n 49 is obtained from a population with u 79 and a =14.
(a) Describe the sampling distribution of x.
(b) What is P (x> 82.9)?
(c) What is P (xs74.7)?
(d) What is P (76.3 <x< 83.8)?
(a) Choose the correct description of the shape of the sampling distribution of x.
CA. The distribution is approximately normal.
O B. The distribution is uniform.
9 C. The distribution is skewed left.
C) D. The distribution is skewed right.
O e The shape of the distribution is unknown.
Find the mean and standard deviation of the sampling distribution of x.
79
2
(Round to four decimal places as needed.)
(b) P (x>82.9)=
Enter your answer In the answer box and then click Check Answer.
Clear All
parts
remaining
Transcribed Image Text:8.1.15 Suppose a simple random sample of size n 49 is obtained from a population with u 79 and a =14. (a) Describe the sampling distribution of x. (b) What is P (x> 82.9)? (c) What is P (xs74.7)? (d) What is P (76.3 <x< 83.8)? (a) Choose the correct description of the shape of the sampling distribution of x. CA. The distribution is approximately normal. O B. The distribution is uniform. 9 C. The distribution is skewed left. C) D. The distribution is skewed right. O e The shape of the distribution is unknown. Find the mean and standard deviation of the sampling distribution of x. 79 2 (Round to four decimal places as needed.) (b) P (x>82.9)= Enter your answer In the answer box and then click Check Answer. Clear All parts remaining
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