In a large population of adults, the mean IQ is 113 with a standard deviation of 18. Suppose 45 adults are randomly selected for a market research campaign. (Round to 2 decimal places for all z-values and round all other answers to 4 decimal places, if needed.) a) The distribution of IQ is approximately normal ÷ b) The distribution of the sample mean IQ is approximately normal with a mean of and a standard deviation of c) The probability that the sample mean IQ is less than 110 is d) The probability that the sample mean IQ is greater than 110 is e) The probability that the sample mean IQ is between 110 and 117 is In a large population of adults, the mean IQ is 113 with a standard deviation of 18. Suppose 45 adults are randomly selected for a market research campaign. (Round to 2 decimal places for all z-values and round all other answers to 4 decimal places, if needed.) a) The distribution of IQ is approximately normal ÷ b) The distribution of the sample mean IQ is ✓ approximately normal and a standard deviation of exactly normal not normal c) The probability that the sample mean IQ left-skewed right-skewed d) The probability that the sample mean IQ is greater than 110 is e) The probability that the sample mean IQ is between 110 and 117 is with a mean of
In a large population of adults, the mean IQ is 113 with a standard deviation of 18. Suppose 45 adults are randomly selected for a market research campaign. (Round to 2 decimal places for all z-values and round all other answers to 4 decimal places, if needed.) a) The distribution of IQ is approximately normal ÷ b) The distribution of the sample mean IQ is approximately normal with a mean of and a standard deviation of c) The probability that the sample mean IQ is less than 110 is d) The probability that the sample mean IQ is greater than 110 is e) The probability that the sample mean IQ is between 110 and 117 is In a large population of adults, the mean IQ is 113 with a standard deviation of 18. Suppose 45 adults are randomly selected for a market research campaign. (Round to 2 decimal places for all z-values and round all other answers to 4 decimal places, if needed.) a) The distribution of IQ is approximately normal ÷ b) The distribution of the sample mean IQ is ✓ approximately normal and a standard deviation of exactly normal not normal c) The probability that the sample mean IQ left-skewed right-skewed d) The probability that the sample mean IQ is greater than 110 is e) The probability that the sample mean IQ is between 110 and 117 is with a mean of
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:In a large population of adults, the mean IQ is 113 with a standard deviation of 18. Suppose 45 adults are
randomly selected for a market research campaign. (Round to 2 decimal places for all z-values and round all
other answers to 4 decimal places, if needed.)
a) The distribution of IQ is approximately normal ÷
b) The distribution of the sample mean IQ is approximately normal with a mean of
and a standard deviation of
c) The probability that the sample mean IQ is less than 110 is
d) The probability that the sample mean IQ is greater than 110 is
e) The probability that the sample mean IQ is between 110 and 117 is
Transcribed Image Text:In a large population of adults, the mean IQ is 113 with a standard deviation of 18. Suppose 45 adults are
randomly selected for a market research campaign. (Round to 2 decimal places for all z-values and round all
other answers to 4 decimal places, if needed.)
a) The distribution of IQ is approximately normal ÷
b) The distribution of the sample mean IQ is ✓ approximately normal
and a standard deviation of
exactly normal
not normal
c) The probability that the sample mean IQ
left-skewed
right-skewed
d) The probability that the sample mean IQ is greater than 110 is
e) The probability that the sample mean IQ is between 110 and 117 is
with a mean of
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