Consider the population of senior high school students across the Philippines. A random sample was selected to find out how many hours per day a typical student spends taking meals. 1. A random sample of 1000 students was selected from among the senior high school students across the Philippines. The average number of hours per day a typical student spends taking meals was found to be 2 h. Suppose the standard deviation of the population is s = 0.5 h. a. Construct the appropriate confidence intervals for the true mean number of hours per day a typical student spends taking meals. Summarize your answers in the table below. Level of Confidence (1 – a) * 100% Confidence Interval for u Upper Limit (1 – a) * 100% Lower Limit 90% 95% 98% 99% b. Discuss the effect of the level of confidence on the length of the confidence intervals, holding the size of the sample and the standard deviation of the population constant. That is, what happens to the length of the confidence interval as the level of confidence increases?
Consider the population of senior high school students across the Philippines. A random sample was selected to find out how many hours per day a typical student spends taking meals. 1. A random sample of 1000 students was selected from among the senior high school students across the Philippines. The average number of hours per day a typical student spends taking meals was found to be 2 h. Suppose the standard deviation of the population is s = 0.5 h. a. Construct the appropriate confidence intervals for the true mean number of hours per day a typical student spends taking meals. Summarize your answers in the table below. Level of Confidence (1 – a) * 100% Confidence Interval for u Upper Limit (1 – a) * 100% Lower Limit 90% 95% 98% 99% b. Discuss the effect of the level of confidence on the length of the confidence intervals, holding the size of the sample and the standard deviation of the population constant. That is, what happens to the length of the confidence interval as the level of confidence increases?
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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