Question

Asked May 13, 2019

- You are a graduate student in an M.D./Ph.D program, attempting a study of the efficacy of different HIV treatments. Viral load was measured in 15 HIV-positive patients, 7 of whom were under one treatment regime, and 8 under another (all measurements in 10
^{3}RNA copies per ml).

treatment 1: 18, 77, 70, 20, 8, 59, 86

treatment 2: 21, 8, 46, 39, 23, 19, 3, 31

a) Assuming that these data meet assumptions for a parametric test, what test would it be?

State the appropriate null hypothesis for this test.

b) Calculate the appropriate test statistic for this test. Do you reject or fail to reject the null? Show your work.

c) In truth, these data aren’t very normally distributed. Assume that transformation doesn’t help them meet the assumption. What alternate test should you perform in this situation?

d) State the null hypothesis for this test, and carry it out. Do you reject or fail to reject the null? Show your work.

Step 1

Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you. If you want remaining sub-parts to be solved, then please resubmit the whole question and specify those sub-parts you want us to solve.

a)

To test the efficacy of two different HIV treatments, it is required to test whether there is any difference between the average viral loads between two groups.

The appropriate test is **‘two independent sample t-test’**.

The null and alternative hypotheses are:

Step 2

The mean and standard deviation of the viral loads in two different sample are:

Step 3

b)

The test statis...

Tagged in

Q: A used car dealer claims that the median cost of a used car is $12,000. In a random sample of 15 use...

A: Given median cost of a used car = $12000Total number of used cars in sample = n = 15Total number of ...

Q: Jobs and productivity! How do retail stores rate? One way to answer this question is to examine annu...

A: Note:Hi! Thank you for posting the question. Since your question has more than 3 parts, we have solv...

Q: - A study was done using a treatment group and a placebo group. The results are shown in the table. ...

A: (a)The provided image does not have the question for subpart (a), since the claim is not known, the ...

Q: An executive believes that a new energy drink his company developed will increase an individual's st...

A: Paired t-test statistic results:For testing whether the new energy drink increase an individual’s st...

Q: For frecuency distribution for us governor 2019. Party. Frequency Democratic. ...

A: For any event A, the probability of A can be found as follows:

Q: What is a sampling distribution? What do we know about the shape and characteistics of the sampling ...

A: In a statistical investigation, we try to asses a general problem respect to one or more characteris...

Q: Professor Jennings claims that only 35% of the students at Flora College work while attending school...

A: (a) Level of significance:It is given that to test whether more than 35% of the students have jobs, ...

Q: Blank are more representative of a population, but blank are easier to obtain

A: The sample is a set of units that is obtained from a population, which represents the population. Th...

Q: Using the table below, determine the critical value or values for a hypothesis test for a proportion...

A: It is provided that the test is right tailed and the significance level is 1%.So, the critical value...