A children's clothing company sells hand-smocked dresses for girls. The length of one particular size of dress is designed to be 37 inches. The company regularly tests thelengths of the garments to ensure quality control, and if the mean length is found to be significantly longer or shorter than 37 inches, the machines must be adjusted. Themost recent simple random sample of 27 dresses had a mean length of 32.85 inches with a standard deviation of 7.23 inches. Assume that the population distribution isapproximately normal. Perform a hypothesis test on the accuracy of the machines at the 0.025 level of significance.Step 1 of 3: State the null and alternative hypotheses for the test. Fill in the blank below.Ho :µ = 37Ha :u37AnswerE TablesE KeypadKeyboard ShortcutsO >

Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Answered: Elsthing company sells hand-smocked…

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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In Country A, the population mean height for 3-year-old boys is 37 inches. Suppose a random sample of 15 3-year-old boys from Country B showed a sample mean of 36.8 inches with a standard deviation of 2 inches. The boys were independently sampled. Assume that heights are Normally distributed in the population. Complete parts a through c below. a. Determine whether the population mean for Country B boys is significantly different from the Country A mean. Use a significance level of 0.05. Which of the following correctly states Ho and Ha? Ho: µ#37 O A. Ho: μz37 Oc. H3i µ 37 OB. Hai H=37 Hai us37 Ho: H = 37 Ha:µ 37 Ho: µ= 37 Ha: H#37 Find the test statistic. t= -0.39 (Type an integer or decimal rounded to two decimal places as needed.) Find the p-value. p (Type an integer or decimal rounded to three decimal places as needed.)
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