Only c and d

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Only c and d
The scores of students on the SAT college entrance examinations at a certain
535.9 and standard deviation
high school had a normal distribution with mean u
25.1.
(a) What is the probability that a single student randomly chosen from all those taking
the test scores 540 or higher?
ANSWER:
For parts (b) through (d), consider a simple random sample (SRS) of 25 students who
took the test.
(b) What are the mean and standard deviation of the sample mean score , of 25
students?
The mean of the sampling distribution for a is:
The standard deviation of the sampling distribution for is.
(c) What z-score corresponds to the mean score i of 540?
ANSWER:
(d) What is the probability that the mean score a of these students is 540 or higher?
ANSWER:
Transcribed Image Text:The scores of students on the SAT college entrance examinations at a certain 535.9 and standard deviation high school had a normal distribution with mean u 25.1. (a) What is the probability that a single student randomly chosen from all those taking the test scores 540 or higher? ANSWER: For parts (b) through (d), consider a simple random sample (SRS) of 25 students who took the test. (b) What are the mean and standard deviation of the sample mean score , of 25 students? The mean of the sampling distribution for a is: The standard deviation of the sampling distribution for is. (c) What z-score corresponds to the mean score i of 540? ANSWER: (d) What is the probability that the mean score a of these students is 540 or higher? ANSWER:
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