shown below are among the results obtained in the study. Higher scores correspond to greater pain levels. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) to (c) below. Reduction in Pain Level After Magnet Treatment (4,): n= 20, x = 0.55, s = 0.91 Reduction in Pain Level After Sham Treatment (ua): n= 20, x= 0.46, s = 1.31 a. Use a 0.05 significance level to test the claim that those treated with magnets have a greater mean reduction in pain than those given a sham treatment (similar to a placebo). What are the null and alternative hypotheses? VA. Ho: H1= P2 O B. Ho: H1 = H2 H1: H1> H2 O C. Ho: H1

Given the data points (2, 29.5), (5, 523), (7, 1807), and (11, 9853), find the value of f(x) if x = 4.48 using quadratic interpolation. Round off your final answer to five decimal places but do not round off in preliminary calculations. THE CORRECT ANSWER: 314.30320

I need help with the first question:   Find the z-score value associated with a guess of 38.

Suppose the mean of Y is 99. What does the mean of X become if you multiply X by 1.37?  (Use two decimal places, ex: 12.34)

P(-2.4<Z<1.5) = ?

Find the z-score corresponding to a score of X=50. u=60 and o=5 u=45 and o=5 u=40 and o=5 u=37 and o=5 u=59 and o=5

Can a person train to become better at holding their breath? An experiment was designed to find out. Twelve volunteers were randomly assigned to 1 of 2 groups. The 6 volunteers assigned to group 1 were given breath-holding exercises to perform for 2 weeks. The other group was not given any information about the experiment. At the end of the 2 weeks, all 12 volunteers were individually tested to determine how long they could hold their breath. Here are the data (in seconds). Group 1: 90, 88, 70, 110, 75, 105 Group 2: 40, 48, 35, 50, 55, 62 The researcher would like to determine if these data provide convincing evidence that the true mean amount of time volunteers who were given training held their breath is greater than volunteers without training. Let ₁ = the true mean amount of time that volunteers who were given training held their breath and ₂ = the true mean amount of time that volunteers without training held their breath. What are the appropriate hypotheses? Ho: U1 - U2 = 0, Ha:…

Harper collected data on students who make appointments to see their advisor to see how many failed to show up. The student records were divided into two groups: male (group 1) and female (group 2). A 93% confidnece interval for pi – P2 was found to be as follows: (0.03, 0.09) Interpret the endpoints of this interval in the context of this problem. Do not use the word "difference" in your answer.

What is the relationship between R sqare and p-value?

Given the data points (1, 13), (4, 235), (8, 2974), and (10, 6875.5), find the value of f(x) if x = 3.21 using quadratic interpolation. Round off your final answer to five decimal places but do not round off in preliminary calculations.   Answer: 24.21023