A company claims that the mean weight of coffee in its 16-ounce bags is16.2 ounces. Consumer advocates group constructed the following 97%confidence interval (15.9, 16.3). Based on this interval, do you think that thecompany's claim is plausible at the 3% significance level?O 16.2 lies in the interval (15.9, 16.3), so we reject the company's claim.O 16.2 does not lie in the interval (15.9, 16.3), so we do not reject themanufacturer's claim.O Not enough information to answer the question.O 16.2 lies in the interval (15.9, 16.3), so we do not reject the company'sclaim.

given data claim : μ = 16.2 97% ci for μ is : (15.9,16.3) at 3% significance level, is the…

Answered: A company claims that the mean weight…

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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If 64 out of 320 people received fruit in addition to candy what are the 95% confidence interval values? (0.14863, 0.15137) (0.14825, 0.15175) (0.19902, 0.20098) (0.15617, 0.24383) (0.09063, 0.20937) (0.09638, 0.20362) 0000
The data given to the right includes data from 38 candies, and 8 of them are red. The company that makes the candy claims that 33% of its candies are red. Use the sample data to construct a 95% confidence interval estimate of the percentage of red candies. What do you conclude about the claim of 33%? Weights (g) of a Sample Bag of Candy Red Blue Brown Green Yellow 0.959 0.768 0.879 0.823 0.944 0.811 0.999 0.979 0.809 0.743 0.933 0942 0.874 0.907 0.779 Construct a 95% confidence interval estimate of the population percentage of candies that are red. 0.784 0.997 0.779 0.815 0.975 0.701 0.914 0.981 0,883 0.991 0.939 %
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10. A chemist has developed a new synthetic fiber. To measure the fiber's strength, experiments are performed on ten strands of this fiber to determine the average number of pounds that can be supported by strands of this fiber before breaking. The following breaking-load results (in pounds) were obtained: 3.3 2.2 3.1 2.8 2.6 2.9 3.0 2.4 2.7 3.2 Construct a 95% confidence interval for the mean breaking strength of a strand of this new fiber.
Here are summary statistics for randomly selected weights of newborn girls: n= 240, x= 31.8 hg, s=7.9 hg. Construct a confidence interval estimate of the mean. Use a 99% confidence level. Are these results very different from the confidence interval 29.1 hg < u< 34.7 hg with only 15 sample values, x= 31.9 hg, and s = 3.6 hg? What is the confidence interval for the population mean u? |hg < u< hg (Round to one decimal place as needed.)
Given a confidence interval {21.98, 28.64 and a mean of 25.31, the margin of error is 6.66. True or False
The following data give the speeds (in miles per hour) as measured by radar, of 4 cars traveling on Interstate I-81: 76 72 80 82 a) Give a point estimate for the mean speed of all cars traveling on this highway. b) What is the standard error of the sample mean? (i) Construct a 96 % confidence interval for the mean speed of all cars traveling on this highway. (ii) Do you need to make any assumptions? Please state them . (iii) Interpretation of your Confidence interval . d)Does the true population mean lie in the interval calculatedabove? (Just circle the correct answer) cannot tell Yes, No e)Answer the following for the 96% confidence interval, assuming all other values remain the same. Just circle the right answer. (i) How would the width of the confidence interval change if the confidence level increases to 99%? Would the width Increase decrease or remain the same? (ii) How would the width of the confidence interval change if the sample size n is decreased? Would the width Increase…
Stanford University conducted a study of whether running is healthy for men and women over age 50. During the first eight years of the study, 1.5% of the 451 members of the 50-plus Fitness Association died. We are interested in the proportion of people over 5o who ran and died in the same eight-year period. Construct a 95% confidence interval for the population proportion of people over 50 who ran and died in the same eight-year period. Explain in a complete sentence what the confidence interval means
IS An insurance company collects data on seat-belt use among drivers in a country. Of 1100 drivers 20-29 years old, 24% said that they buckle up, whereas 341 of 1200 drivers 45-64 years old said that they did. Find a 95% confidence interval for the difference between the proportions of seat-belt users for drivers in the age groups 20-29 years and 45-64 years. Construct a 95% confidence interval. The 95% confidence interval for p, -p, is from to . SC (Round to three decimal places as needed.)
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