c. After conducting the appropriate significance test, the test statistic was found to be -1.34.Therefore, the conclusion for the test is:Reject Ho, because p-value is less than 0.05Fail to reject H1, because -1.34 falls outside the critical regionReject Ho, because -1.34 falls within the critical regionFail to reject Ho, because p-value is greater than 0.05 A company produces high quality and long lasting batteries for cars. The CEO of the company claims that the average lifespan of a battery is 270 dayswith a standard deviation of 50 days under normal conditions. A quality control officer randomly selected 45 batteries from the production line andtested the longevity period of these batteries. It is found that the tested batteries had a mean life span of 260 days. Does the study support the claim ofthe CEO that the average lasting time of a battery is less than 270 days? Test it at 5% level of significance.a. Which of the following statistical tests is most appropriate in this scenario?O Two-Tailed Z-TestOne-Tailed Z-TestTwo-Tailed T-TestOne-Tailed T-Testb. What are the appropriate hypotheses for the test?Ho : µ = 260 Hị : µ < 260Ho : µ + 270 H : µ = 270Но : и — 270 Н, : р > 270Но : и — 270 Н, : р < 270O O O o

Given : sample size, n =45 sample mean, x̄ =260 population standard deviation,σ=50…

Answered: A company produces high quality and…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Probability Question required solution
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It appears that people who are mildly obese are less active than leaner people. One study looked at the average number of minutes per day that people spend standing or walking. Among mildly obese people, the mean number of minutes of daily activity (standing or walking) is approximately Normally distributed with 371 minutes and standard deviation 69 minutes. The mean number of minutes of daily activity for lean people is approximately Normally distributed with 526 minutes and standard deviation 106 minutes. A researcher records the minutes of activity for an SRS of 6 mildly obese people and an SRS of 6 lean people. (a) What is the probability that the mean number of minutes of daily activity of the 6 mildly obese people exceeds 410 minutes? (Enter your answer rounded to four decimal places.) probability: 0.0256 Incorrect (b) What is the probability that the mean numberpof minutes of daily activity of the 6 lean people exceeds 410 minutes? (Enter your answer rounded to four decimal…

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