Suppose a simple random sample of size n= 49 is obtained from a population with u = 81 and o = 21. (a) Describe the sampling distribution of x. (b) What is P (x> 86.4)? (c) What is P (xs74.4)? (d) What is P (77.55 86.4)? (c) What is P (xs74.4)? (d) What is P (77.55 86.4) = (Round to four decimal places as needed.) (c) P (xs74.4) = (Round to four decimal places as needed.) %3D (d) P (77.55

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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Question
Suppose a simple random sample of size n= 49 is obtained from a population with u = 81 and o = 21.
(a) Describe the sampling distribution of x.
(b) What is P (x> 86.4)?
(c) What is P (xs74.4)?
(d) What is P (77.55 <x<87)?
%3D
Click here to view the standard normal distribution table (page 1).
Click here to view the standard normal distribution table (page 2).
(a) Choose the correct description of the shape of the sampling distribution of x.
O A. The distribution is skewed right.
OB. The distribution is uniform.
C. The distribution is skewed left.
O D. The distribution is approximately normal.
E. The shape of the distribution is unknown.
Click to select your answer(s).
Type here to search
Transcribed Image Text:Suppose a simple random sample of size n= 49 is obtained from a population with u = 81 and o = 21. (a) Describe the sampling distribution of x. (b) What is P (x> 86.4)? (c) What is P (xs74.4)? (d) What is P (77.55 <x<87)? %3D Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) Choose the correct description of the shape of the sampling distribution of x. O A. The distribution is skewed right. OB. The distribution is uniform. C. The distribution is skewed left. O D. The distribution is approximately normal. E. The shape of the distribution is unknown. Click to select your answer(s). Type here to search
II
Suppose a simple random sample of size n= 49 is obtained from a population with u = 81 and o = 21.
(a) Describe the sampling distribution of x.
(b) What is P (x> 86.4)?
(c) What is P (xs74.4)?
(d) What is P (77.55 <x<87) ?
Click here to view the standard normal distribution table (page 1).
Click here to view the standard normal distribution table (page 2).
Find the mean and standard deviation of the sampling distribution of x.
Hx
%3D
(b) P (x>86.4) =
(Round to four decimal places as needed.)
(c) P (xs74.4) =
(Round to four decimal places as needed.)
%3D
(d) P (77.55<x<87) =(Round to four decimal places as needed.)
Click to select your answer(s).
Type here to search
ASU
Transcribed Image Text:II Suppose a simple random sample of size n= 49 is obtained from a population with u = 81 and o = 21. (a) Describe the sampling distribution of x. (b) What is P (x> 86.4)? (c) What is P (xs74.4)? (d) What is P (77.55 <x<87) ? Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). Find the mean and standard deviation of the sampling distribution of x. Hx %3D (b) P (x>86.4) = (Round to four decimal places as needed.) (c) P (xs74.4) = (Round to four decimal places as needed.) %3D (d) P (77.55<x<87) =(Round to four decimal places as needed.) Click to select your answer(s). Type here to search ASU
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