b. The mean age of 20 youth volunteers in a community project is 17.5 years with a standard deviation of 2 years. If the sample comes from an approximately normal distribution, what are the point and the interval estimate of the population? Use 99% confidence level. c. The mean scores of a random sample of 17 students who took a special test is 83.5. If the standard deviation of the scores is 4.1, and the sample comes from an approximately normal population, find the point and the interval estimates of the population mean adopting a confidence level of 95%.
b. The mean age of 20 youth volunteers in a community project is 17.5 years with a standard deviation of 2 years. If the sample comes from an approximately normal distribution, what are the point and the interval estimate of the population? Use 99% confidence level. c. The mean scores of a random sample of 17 students who took a special test is 83.5. If the standard deviation of the scores is 4.1, and the sample comes from an approximately normal population, find the point and the interval estimates of the population mean adopting a confidence level of 95%.
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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A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
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Problems B&C
Transcribed Image Text:2. Solve for the best point estimate and confidence interval
a. Assume that o = 4.5 and use 95% confidence
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b. The mean age of 20 youth volunteers in a community project is 17.5 years with a standard
deviation of 2 years. If the sample comes from an approximately normal distribution, what
are the point and the interval estimate of the population? Use 99% confidence level.
c. The mean scores of a random sample of 17 students who took a special test is 83.5. If the
standard deviation of the scores is 4.1, and the sample comes from an approximately
normal population, find the point and the interval estimates of the population mean
adopting a confidence level of 95%.
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