3.In a random sample of 170 customers, 90 ordered chicken sandwitches for lunch. Construct a 94% confidence interval for the true proportion of customers who buy chicken sandwitches for lunch

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Use the text in question 3 to answer question 4.

3.In a random sample of 170 customers, 90 ordered chicken sandwitches for lunch. Construct a 94% confidence interval for the true proportion of customers who buy chicken sandwitches for lunch

4.

In a recent study reported Sept. 21, 1952 on the Flurry Blog, the mean age of tablet users is 34 years. Suppose the standard deviation is 15 years. Take a sample of n = 100.

Find the 90th percentile for the sample mean age (to one decimal place)

Find the probability that at least 150 favor a charter school.

 

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