According to a report from a business intelligence company, smartphone owners are using an average of 18 apps per month
Posted: Wed May 11, 2022 12:53 pm
According to a report from a business intelligence company,
smartphone owners are using an average of 18 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.
Question content area bottom
Part 1 a. If you select a random sample of 25 smartphone
owners, what is the probability that the sample mean is between
17.5 and 18.5?
Answer: 0.471
(Round to three decimal places as needed.)
Part 2
b. If you select a random sample of 25 smartphone owners, what
is the probability that the sample mean is between 17 and 18?
enter your response here ___________
(Round to three decimal places as needed.)
smartphone owners are using an average of 18 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.
Question content area bottom
Part 1 a. If you select a random sample of 25 smartphone
owners, what is the probability that the sample mean is between
17.5 and 18.5?
Answer: 0.471
(Round to three decimal places as needed.)
Part 2
b. If you select a random sample of 25 smartphone owners, what
is the probability that the sample mean is between 17 and 18?
enter your response here ___________
(Round to three decimal places as needed.)