Solve both parts 3 and 4 of the question below using a two-sample z test.Show all work and steps. We want to test the relative efficacy of a new cholesterol loweringdrug A versus existing drug B. We randomize na subjects with high cholesterol to taketreatment A and ng subjects to take treatment B. After a 1-month followup, we measurecholesterol levels in both groups. Suppose the data in the two groups are independent andiidiidYA N(u4, o²) and Y³,Y;",...,YB N(uB,o²), where o?9 is known.2пвLet Y4 and YB be the sample average cholesterol level in group A and B.3. Suppose YA20 and YB = 26 with na = nB = 36. Conduct an a = .05 significancelevel test of Họ : A= 0 versus Ha : A 7 0. Do you reject or fail to reject the null atthe .05 significance level? Be suto find the distribution under the null, compute thecritical value, find the rejection region, and the compute the p-value.4. Interpret the p-value you computed in the previous part.

3. Critical value: From the given information, the significance level is 0.05. From the alternative…

Answered: We want to test the relative efficacy…

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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Imagine that you own a coffee shop in downtown Toronto. You think it's time to expand to a second location in a different part of the Greater Toronto Area. However, you need to make sure that the second location you have selected will be as popular with customers as your current location. You want to do a survey. You know you can't ask everyone, so you need to ask a sample. PART 1: What process should you follow to select your sample? choices are simple, systematic, stratified, and cluster sampling. PART 2: What is the best way to administer your survey to make sure you get enough responses to give you a good representative sample?
2. In a population it is estimated that 20% have a desired trait of interest for the researcher. The researcher wants to know how many people on average he has to draw from a population to get 2 people with the trait. Use rows 20-24 of the Random Number Table to carry out the simulation. Explain clearly how you set up the problem and report your findings. Answer:
Billy has a bag of 30 marbles. He must choose only 6 marbles to bring for show and tell. What is the size of the sample space in this experiment
Define three measures one can take to increase the power of an experiment. Explain why your measures result in greater power?
We need first to determine the degrees of freedom before we could calculate the sample mean True False
A clinical trial was conducted using a new method designed to increase the probability of conceiving a boy. As of this writing, 280 babies were born to parents using the new method, and 232 of them were boys. Use a 0.01 significance level to test the claim that the new method is effective in increasing the likelihood that a baby will be a boy. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis and final conclusion that addresses the original claim. Use the P-value method and the normal distribution as an approximation to the binomial distribution, complete parts (a) through (e). What are the null and alternative hypotheses? ⧠ A. ?0: ? = 0.5 ?1: ? > 0.5 ⧠ B. ?0: ? ≠ 0.5 ?1: ? = 0.5 ⧠ C. ?0: ? < 0.5 ?1: ? = 0.5 ⧠ D. ?0: ? > 0.5 ?1: ? = 0.5 ⧠ E. ?0: ? = 0.5 ?1: ? < 0.5 ⧠ F. ?0: ? = 0.5 ?1: ? ≠ 0.5 What is the test statistic? z = ______________________________ What is the P-value? P-value =…
Please give me a clear solution. Follow the 5 steps in hypothesis testing to solve the problem. 5 STEPS IN HYPOTHESIS TESTING: Step 1: Null and Alternative Hypothesis Step 2: Statistical Test Step 3: Critical Regions Step 4: Computation Step 5: Decision and Conclusion
Statistical tests are more accurate if there is a sample size of n > 30. how will a sample size of n = 20 effect the results of a test?
How would you respond to Step 3 for the One-Sample Z test? When is it appropriate to use?
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