A recipe submitted to a magazine by one of its subscribers states that the mean baking time fora cheesecake is 57 minutes. A test kitchen preparing the recipe before it is published in themagazine makes the cheesecake 12 times at different times of the day in different ovens. Thefollowing baking times (in minutes) are observed.52 54 55 57 60 63 64 646664 65 66Assume that the baking times belong to a normal population.(a) Test the null hypothesis that the mean baking time is 57 minutes against the alternativehypothesis57. Use a=.05.(b) What is the P value?

a.We need to test the hypothesis:H0: μ = 57H1: μ > 57 Significance level:a = 0.05 (given)…

Answered: A recipe submitted to a magazine by one…

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 manufacturer of a sports car claims that the fuel injection system lasts 48 months before it needs to be replaced. A consumer group tests this claim by surveying a random sample of 10 owners who had the fuel injection system replaced. The ages of the cars at the time of replacement were (in months): 21 46 49 48 53 46 30 51 42 52 A USE SALT (i) Use your calculator to calculate the mean age of a car when the fuel injection system fails x and standard deviation s. (Round your answers to four decimal places.) X = months months (ii) Test the claim that the fuel injection system lasts less than an average of 48 months before needing replacement. Use a 5% level of significance. What are we testing in this problem? O single mean O single proportion (a) What is the level of significance? 0.05 State the null and alternate hypotheses. O Ho: H = 48; H,: H # 48 O Ho: p = 48; H,: p # 48 O Ho: p = 48; H: p > 48 O H: H = 48; H,: µ 48 (b) What sampling distribution will you use? What assumptions…

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