←Assume that both populations are normally distributed.a) Test whether µμ₁>u₂ at the α = 0.10 level of significance for the given sample data.b) Construct a 90% confidence interval about μ₁-₂-a) Perform a hypothesis test. Determine the null and alternative hypotheses.OA. Ho: H1H2, H₁: H1 KAssume that both populations are normally distributed.t= (Round to two decimal places as needed.)Determine the critical value(s). Select the correct choice below and fill in the answer box(es) within your choice.(Round to three decimal places as needed.)OA. The critical value isOB. The lower critical value isShould the hypothesis be rejected?The upper critical value isthe null hypothesis because the test statisticGEEEDb) Construct a 90% confidence interval about ₁₂.The confidence interval is the range from tothe critical region.Sample 1Sample 24

Answered: Image /qna-images/answer/35e6a7c2-d142-44f4-9816-3029ceda0688.jpg

Answered: =(Round to two decimal places as…

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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Use the given confidence interval to find the margin of error and the sample mean. (15.3,23.7) The sample mean is . (Type an integer or a decimal.) The margin of error is. (Type an integer or a decimal.)
Use the six steps of hypothesis testing to answer the following question. Remember to determine if the problem is a Z test or T test as that will influence your critical value. You believe you have discovered a topical solution that heals wounds faster. The average number of days it takes to remove stiches after surgery in all hospital patients is 12. In a sample of 29 patients the average number of days to remove stiches is 10.5 with a std dev. Of 1.2 Did your solution lessen the number of days patients had stiches
Tina catches a 14-pound bass. She does not know the population mean or standard deviation. So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds. Find the t and calculate a 95% (α = .05) confidence interval.
Find the sample size needed to estimate the percentage of adults who can wiggle their ears. Use a margin of error of 5 percentage points and use a confidence level of 90%. Complete parts (a) and (b) below. a. Assume that p and q are unknown. n = (Round up to the nearest integer.)
50
solve correctly. I will rate accordingly.
Researchers studied the mean egg length (in millimeters) for a bird population. After taking a random sample of eggs, they obtained a 95% confidence interval of (45,60). What is the value of the margin of error? Choose the correct answer below. A. 15 mm B. 52.5 mm O c. 7.5 mm O D. 1.96
Determine the sample size needed to construct a 98 % confidence interval to estimate the population mean when the population standard deviation is 76.85, and the margin of error is 15.63. Use two decimal places for the critical value and round to the nearest integer for your final answer. Eg. 48.47 = 49
Describe type I and type II errors for a hypothesis test of the indicated claim. A furniture store claims that at least 40% of its new customers will return to buy their next piece of furniture. Describe the type I error. Choose the correct answer below. OA. A type I error will occur when the actual proportion of new customers who return to buy their next piece of furniture is at least 0.40, but you fail to reject Ho: p20.40. OB. A type I error will occur when the actual proportion of new customers who return to buy their next piece furniture is at least 0.40, but you reject Ho: p20.40. OC. A type I error will occur when the actual proportion of new customers who return to buy their next piece of furniture is no more than 0.40, but you reject Ho: p ≤ 0.40. OD. A type I error will occur when the actual proportion of new customers who return to buy their next piece f furniture is no more than 0.40, but you fail to reject Ho: p ≤0.40. Describe the type II error. Choose the correct answer…
The null and alternative hypotheses are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. What parameter is being tested? Ho: P= 0.76 H₁: p>0.76 Choose the correct answer below. Left-tailed OTwo-tailed Right-tailed BLECH

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