QUESTION 2 A sample is used to obtain a 95% confidence interval for the mean of a population. The confidence interval goes from 10.89 to 13.21. If the same sample had been used to test Ho: H= 12 vs. H1:µ# 12, then you would conclude from this test that the Ho hypothesis can be rejected at the 5% significance level. O True O False

QUESTION 2 A sample is used to obtain a 95% confidence interval for the mean of a population. The confidence interval goes from 10.89 to 13.21. If the same sample had been used to test Ho: H= 12 vs. H1:µ# 12, then you would conclude from this test that the Ho hypothesis can be rejected at the 5% significance level. O True O False

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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Question 7: can we use this to determine a 95% confidence interval for the average study time of All students for final exams?
Question 6 Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She randomly selects a sample of 41 cookies and finds that the number of chocolate chips per cookie in the sample has a mean of 14.3 and a standard deviation of 2.2. What is the 90% confidence interval for the number of chocolate chips per cookie for Big Chip cookies? Enter your answers accurate to one decimal place (because the sample statistics are reported accurate to one decimal place). Submit Question
Question 3
A survey of 150 students is selected randomly on a large university campus. They are asked if they use a laptop in class to take notes. The result of the survey is that 48 out of 150 students responded “yes “. And approximate 95% confidence interval is (0.245, 0.395). Complete parts A through D.
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Question 4(a) A sample of test scores is obtained. The scores are displayed as follows:11, 16, 19, 15, 7, 8, 10Test the hypothesis that the mean score is 15 at 1% significance level (b) A chemical manufacturer is concerned about the degree of contamination in the raw materialshipments purchased from a supplier. Taking a random sample of 20 shipments of raw materials,the standard deviation of contamination is 3.59. Construct the 95% confidence interval forpopulation variance
QUESTION 1 A company claims that the mean weight of coffee in its 16-ounce bags is 16.05 ounces. Consumer advocates group constructed the following 95% confidence interval (16.09, 16.12). Based on this interval, do you think that the company's claim is plausible at the 5% significance level? 16.05 lies in the interval (16.09, 16.12), so we do not reject the manufacturer's claim. 16.05 does not lie in the interval (16.0, 16.2), so we reject the manufacturer's claim. Not enough information to answer the question. 16.05 does not lie in the interval (16.09, 16.12), so we reject the company's claim.
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