84. Spending on concessions at the movies varies by age of the movie goer. A random sample of 100 adults in their 40's found that 70 purchased popcorn. A random sample of 100 adults less than 40 years old found that 59 purchased popcorn. adi (a) State the hypotheses for determining if there is a difference in the proportion of adults who purchase popcorn in each age group. (b) Calculate the test statistic. (c) Calculate the p-value. (d) Interpret the p-value. (e) State your conclusion. (f) Would a confidence interval for the difference in proportions contain zero? Explain without constructing the interval.
84. Spending on concessions at the movies varies by age of the movie goer. A random sample of 100 adults in their 40's found that 70 purchased popcorn. A random sample of 100 adults less than 40 years old found that 59 purchased popcorn. adi (a) State the hypotheses for determining if there is a difference in the proportion of adults who purchase popcorn in each age group. (b) Calculate the test statistic. (c) Calculate the p-value. (d) Interpret the p-value. (e) State your conclusion. (f) Would a confidence interval for the difference in proportions contain zero? Explain without constructing the interval.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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