According to a report from a business intelligence company, smartphone owners are using an average of 24 apps per month. Assume that number of apps used per month by smartphone owners is normally distributed and that the standard deviation is 4. Complete parts (a) through (d) below. CRITE a. If you select a random sample of 25 smartphone owners, what is the probability that the sample mean is between 23.5 and 24.5? 0.471 (Round to three decimal places as needed.) b. If you select a random sample of 25 smartphone owners, what is the probability that the sample mean is between 23 and 24? (Round to three decimal places as needed.)

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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According to a report from a business intelligence company, smartphone owners are using an average of 24 apps per
month. Assume that number of apps used per month by smartphone owners is normally distributed and that the standard
deviation is 4. Complete parts (a) through (d) below.
SIXB
a. If you select a random sample of 25 smartphone owners, what is the probability that the sample mean is between 23.5
and 24.5?
0.471 (Round to three decimal places as needed.)
b. If you select a random sample of 25 smartphone owners, what is the probability that the sample mean is between 23 and
24?
(Round to three decimal places as needed.)
Transcribed Image Text:According to a report from a business intelligence company, smartphone owners are using an average of 24 apps per month. Assume that number of apps used per month by smartphone owners is normally distributed and that the standard deviation is 4. Complete parts (a) through (d) below. SIXB a. If you select a random sample of 25 smartphone owners, what is the probability that the sample mean is between 23.5 and 24.5? 0.471 (Round to three decimal places as needed.) b. If you select a random sample of 25 smartphone owners, what is the probability that the sample mean is between 23 and 24? (Round to three decimal places as needed.)
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