Formulate the indicated conclusion in non technical terms. Be sure to address the original claim. The manufacturer of a refrigerator system for soda machines produces refrigerators that aresupposed to maintain a true mean temperature, u, of 49°F, ideal for a certain type of soda. Themanufacturer of the soda does not agree with the refrigerator manufacturer, and claims he canprove that the true mean temperature is incorrect. Assuming that a hypothesis test of the claimhas been conducted and that the conclusion is to reject the null hypothesis, state the conclusionin nontechnical terms.O There is not sufficient evidence to support the claim that the mean temperature is different from 49°FThere is sufficient evidence to support the claim that the mean temperature is equal to 49°F.O There is not sufficient evidence to support the claim that the mean temperature is equal to 49°F.There is sufficient evidence to support the claim that the mean temperature is different from 49°F.

Given Population mean μ=49 Reject the null hypothesis

Answered: The manufacturer of a refrigerator…

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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A cereal company claims that the mean weight of the cereal in itspackets is at least 14 oz. Assuming that a hypothesis test to reject this claim has been conducted and that the conclusion is to reject the null hypothesis, state the conclusion in nontechnical terms.
Suppose, you work with the Quality Assurance Team of a Biscuit Company, and a customer complains that the mean weight of the biscuit packet you are selling is less than 250 gm when you have claimed it to be of weight 250 gm in the packet. To test the customer's claim, you sampled 25 biscuit packets and measured their weights. Let be the hypothesized mean weight of a biscuit packet that your company claims, and the null and alternative hypotheses have been formulated as: At a 5% level of significance (), what will be the conclusion from a one-sample t-test (assuming that all the assumptions of the test are satisfied) if you obtain a p-value of 0.023?
A manufacturer claims that the average life of his electric light bulbs is at least 1500 hours. From a random sample of 65 bulbs tested, they found that the mean and standard deviation of life in hours is 1497 and 12.31 respectively. Is there sufficient evidence, at the 5% level, that the length of life of its light bulbs is less than its claim? Assume that the distribution of the length of life of light bulbs is normal.(i) Write appropriate null and alternative hypothesis statements.(ii) From the alternative hypotheses given in part (i), state the type of the test required.(iii) Suppose that a sample of 65 bulbs provides a sample mean life of 1497 hours and the standard deviation is 12.31 hours, what is the test statistic, Z?(iv) Using the test statistic (Z) in part (iii), what conclusion can we draw regarding the null hypothesis at 5% significance level? Is it accepted or rejected?
Each day for 200 days, a quality engineer samples 144 fuses rated at 15 A and measures the amperage at which they burn out. He performs a hypothesis test of H0 : μ = 15 versus H1 : μ ≠ 15, where μ is the mean burnout amperage of the fuses manufactured that day. a) On 10 of the 200 days, H0 is rejected at the 5% level. Does this provide conclusive evidence that the mean burnout amperage was different from 15 A on at least one of the 200 days? Explain. b) Would the answer to part (a) be different if H0 had been rejected on 20 of the 200 days? Explain.
the manager of an automobile dealership is considering a new bonus plan designed toincrease sales volume. currently, the mean sales volume is 14 automobiles per month. themanager wants to conduct a research study to see whether the new bonus plan increasessales volume. to collect data on the plan, a sample of sales personnel will be allowed tosell under the new bonus plan for a one-month period.a. develop the null and alternative hypotheses most appropriate for this situation
Formulate the indicated conclusion in nontechnical terms. Be sure to address the original claim. The owner of a football team claims that the average attendance at games is over 523, and he is therefore justified in moving the team to a city with a larger stadium. Assuming that a hypothesis test of the claim has been conducted and that the conclusion is failure to reject the null hypothesis, state the conclusion in nontechnical terms. A. There is not sufficient evidence to support the claim that the mean attendance is greater than 523. B. There is not sufficient evidence to support the claim that the mean attendance is less than 523. C. There is sufficient evidence to support the claim that the mean attendance is less than 523. D. There is sufficient evidence to support the claim that the mean attendance is greater than 523.
A sample of 100 flounder have a sample mean weight of 21.5 grams. Scientists wish to perform a hypothesis test to determine if the mean weight differs from 20 grams. State the appropriate null and alternative hypotheses.
The dean of a major university claims that the mean number of hours students study at her university (per day) is at most 5.6 hours. If a hypothesis test is performed, how should a decision that fails to reject the null hypothesis be interpreted?
A sample of 75 chewable vitamin tablets have a sample mean of 251 milligrams of vitamin C. Nutritionists want to perform a hypothesis test to determine how strong the evidence is that the mean mass of vitamin C per tablet differs from 256 milligrams. State the appropriate null and alternate hypotheses.
The CEO of a cable company claims that the population mean wait time for callers at a company's customer service center is exactly 7 minutes. He tests this claim against the population mean wait time for callers being greater than 7 minutes. He selects a random sample of 36 customers who called the company's customer service center and finds that the sample mean wait time is 8.03 minutes with a sample standard deviation of 2.14 minutes. The test statistic t for a hypothesis test of H0:μ=7 versus Ha:μ>7 is t≈2.89. If p-value<0.005 and the level of significance is α=0.05, which of the following statements are accurate for this hypothesis test to evaluate the claim that the true population wait time for customer service calls is equal to 7 minutes? Select all that apply: A) Fail to reject the null hypothesis that the true population mean wait time for a customer service call is equal to 7minutes. B) Reject the null hypothesis that the true population mean wait time for a…
The mean annual income of certified welders is normally distributed with a mean of $50,000 and a population standard deviation of $2,000. The ship building association wishes to find out whether their welders earn more or less than $50,000 annually. The alternate hypothesis is that the mean is not $50,000. If the level of significance is 0.10, what is the decision rule? Do not reject the null hypothesis if computed z lies between −1.645 and +1.645; otherwise, reject it. Do not reject the null hypothesis if computed z lies between −1.960 and +1.960; otherwise, reject it. Reject the null hypothesis if computed z is below −1.960; otherwise, reject it. Do not reject the null hypothesis if computed z is greater than 1.645; otherwise, reject it.
A machine that fills beverage cans is supposed to fill 12 ounces of beverage in each can. A randomsample of 8 cans revealed a mean volume of 12.025 ounces and a standard deviation of 0.073 ounces. Is it reasonable to assume that data are from a normal population? Perform a hypothesis test to determine whether the mean volume is more than 12 ounces.i.Set up the null and the alternative hypotheses.

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