The Statistics Games are played by a large number of teams across the county. Teams raise money to cover expenses incurred by participating. You want to estimate the mean amount of money raised by teams. You take a random sample of 36 teams and find a mean of $375, with a standard deviation of $32. Should you calculate a z-interval or t-interval? A) z-interval, because we are calculating a confidence interval for a proportion. B) t-interval, because we are calculating a confidence interval for a mean. C) t-interval, because we are calculating a confidence interval for a mean and the population standard deviation is not known. D) z-interval, because we are calculating a confidence interval for a mean and the population standard deviation is known.
The Statistics Games are played by a large number of teams across the county. Teams raise money to cover expenses incurred by participating. You want to estimate the mean amount of money raised by teams. You take a random sample of 36 teams and find a mean of $375, with a standard deviation of $32. Should you calculate a z-interval or t-interval? A) z-interval, because we are calculating a confidence interval for a proportion. B) t-interval, because we are calculating a confidence interval for a mean. C) t-interval, because we are calculating a confidence interval for a mean and the population standard deviation is not known. D) z-interval, because we are calculating a confidence interval for a mean and the population standard deviation is known.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 22PFA
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The Statistics Games are played by a large number of teams across the county. Teams raise money to cover expenses incurred by participating. You want to estimate the mean amount of money raised by teams. You take a random sample of 36 teams and find a mean of $375, with a standard deviation of $32. Should you calculate a z-interval or t-interval?
A) z-interval, because we are calculating a confidence interval for a proportion.
B) t-interval, because we are calculating a confidence interval for a mean.
C) t-interval, because we are calculating a confidence interval for a mean and the population standard deviation is not known.
D) z-interval, because we are calculating a confidence interval for a mean and the population standard deviation is known.
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