Website An investment company is planning to upgrade the mobile access to their website, but they'd like to know the pro- portion of their customers who access it from their smartphones. They draw a random sample of 200 from customers who re- cently logged in and check their IP address. Suppose that the true proportion of smartphone users is 36%. a) What would you expect the shape of the sampling distribution for the sample proportion to be? b) What would be the mean of this sampling distribution? c) What would be the standard deviation of the sampling distribution?

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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SECTION 13.1
1. Website An investment company is planning to upgrade the
mobile access to their website, but they'd like to know the pro-
portion of their customers who access it from their smartphones.
They draw a random sample of 200 from customers who re-
cently logged in and check their IP address. Suppose that the
true proportion of smartphone users is 36%.
a) What would you expect the shape of the sampling distribution
for the sample proportion to be?
b) What would be the mean of this sampling distribution?
c) What would be the standard deviation of the sampling
distribution?
Transcribed Image Text:SECTION 13.1 1. Website An investment company is planning to upgrade the mobile access to their website, but they'd like to know the pro- portion of their customers who access it from their smartphones. They draw a random sample of 200 from customers who re- cently logged in and check their IP address. Suppose that the true proportion of smartphone users is 36%. a) What would you expect the shape of the sampling distribution for the sample proportion to be? b) What would be the mean of this sampling distribution? c) What would be the standard deviation of the sampling distribution?
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