9) The manufacturer of an over-the-counter heartburn relief medication claims that its productbrings relief in less than 3.5 minutes, on average. To be able to make this claim, the manufacturerwas required by the FDA to present statistical evidence in support of the claim. The manufacturerreported that for a sample of 50 heartburn sufferers, the mean time until relief was 3.3 minutesand the population standard deviation was 1.1 minutes. We define μ to be the mean time untilrelief.A) Please state the null and alternative hypotheses.B) Calculate the test statistic.1C) Calculate the p-value that corresponds to the test statistic that would be used in applying thep-value rule.D) Decide whether to reject the null hypothesis a 0.05.13E) Interpret the result.

Given that Sample size=50 Note: According to bartelby question answer guidelines an expert can solve…

Answered: 9) The manufacturer of an…

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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Steve believes that his wife's cell phone battery does not last as long as his cell phone battery. On eleven different occasions, he measured the length of time his cell phone battery lasted and calculated that the mean was 16.4 hours with a standard deviation of 6.4 hours. He measured the length of time his wife's cell phone battery lasted on seven different occasions and calculated a mean of 23.3 hours with a standard deviation of 4.2 hours. Assume that the population variances are the same. Let Population 1 be the battery life of Steve's cell phone and Population 2 be the battery life of his wife's cell phone. Step 1 of 2: Construct a 90 % confidence interval for the true difference in mean battery life between Steve's cell phone and his wife's. Round the endpoints of the interval to one decimal place, if necessary.
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A pharmaceutical company needs to know if its new cholesterol drug, Praxor, is effective at lowering cholesterol levels. It believes that people who take Praxor will average a greater decrease in cholesterol level than people taking a placebo. After the experiment is complete, the researchers find that the 46 participants in the treatment group lowered their cholesterol levels by a mean of 19.5 points with a standard deviation of 4.9 points. The 37 participants in the control group lowered their cholesterol levels by a mean of 18.4 points with a standard deviation of 4.1 points. Assume that the population variances are not equal and test the company's claim at the 0.02 level. Let the treatment group be Population 1 and let the control group be Population 2. Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places.
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