You want to make a confidence interval for the true average price of calculators in Gainesville. A random sample of 5 calculators reveals the following prices: 10.95 15.95 103.95 17.95 12.95 What is the standard error of the sample mean, x-bar? IMPORTANT: Keep all significant digits in your calculator until the very end. a) 20.06 b) 40.12 c) 17.94 d) 8.02

You want to make a confidence interval for the true average price of calculators in Gainesville. A random sample of 5 calculators reveals the following prices: 10.95 15.95 103.95 17.95 12.95 What is the standard error of the sample mean, x-bar? IMPORTANT: Keep all significant digits in your calculator until the very end. a) 20.06 b) 40.12 c) 17.94 d) 8.02

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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The average number of cavities that thirty-year-old Americans have had in their lifetimes is 4. Do twenty-year-olds have a different number of cavities? The data show the results of a survey of 11 twenty- vear-olds who were asked how many cavities they have had. Assume that the distribution of the population is normal. 2, 5, 3, 2, 5, 3, 5, 2, 2, 2, 4 What can be concluded at the a = 0.05 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: ns Ho: ? vSelect an answer v re H: ? v Select an answer c. The test statistic 2 v = (please show your answer to 3 decimal places.) urse d. The p-value = e. The p-value is ? va f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that... (Please show your answer to 4 decimal places.) O The data suggest that the population mean number of cavities for twenty-year-olds is not significantly different from 4 at a = 0.05, so there is…