You must estimate the mean temperature (in degrees Fahrenheit) with the following sampletemperatures:6351.162.154.864.954.155.956.7Find the 90% confidence interval. Enter your answer as an open-interval (i.e., parentheses) accurateto two decimal places (because the sample data are reported accurate to one decimal place).90% C.I.Answer should be obtained without any preliminary rounding.

The sample mean is calculated as follows:

Answered: You must estimate the mean temperature…

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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Calculate the lower endpoint of a two-sided 95% confidence interval for the population mean using the following sample statistics: x=0.485, s=0.369, and n=32. Use three decimal place accuracy.
In a random sample of 24 adults > 60 years old, the mean daily calcium intake was 721 mg with a standard deviation of 454. Using this data, answer the following questions. B) Construct a 90% confidence interval for the population mean Based on the confidence interval constructed in part b(Construct a 90% confidence interval for the population mean), is it reasonable to say that the mean daily calcium intake of the population is NOT 850 mg?
The National Health Statistics Reports dated Oct. 22, 2008, included the following information on the heights (in.) for non-Hispanic white females: Age Sample Size Sample Mean Std. Error Mean 20-39 866 64.9 .09 60 and older 934 63.1 .11 Calculate and interpret a confidence interval at confidence level approximately 95% for the difference between population mean height for the younger women and that for the older women. Let denote the population mean height for those aged 20-39 and denote the population mean height for those aged 60 and older. Interpret the hypotheses and , and then carry out a test of these hypotheses at significance level .001 using the rejection region approach. What is the P-value for the test you carried out in (b)? Based on this P-value, would you reject the null hypothesis at any reasonable significance level? Explain. What hypotheses would be appropriate if referred to the older age group, referred to the younger age…
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The Ball Corporation's beverage can manufacturing plant in Fort Atkinson, Wisconsin, uses a metal supplier that provides metal with a known thickness standard deviation σ = .000672 mm. Assume a random sample of 56 sheets of metal resulted in an x⎯⎯x¯ = .2737 mm. Calculate the 98 percent confidence interval for the true mean metal thickness. (Round your answers to 4 decimal places.)
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