Question # 3 Perform the following hypothesis test on the paired data below: HO: µd =...

Question # 3
Perform the following hypothesis test on the paired data below:

HO: µd = 0 (Please recall that µd is read ~ and also known as ~ Mu-sub-d) HA: µd ≠ 0 Test at α = 0.05

Before
30
75
92
69
61
57
57
89
92
After
53
68
98
62
67
71
68
96
98

a) Is this an upper tail, lower tail, or two-tail test? (5 points)
b) Are we testing means or proportions? (5 points)
c) State the rule of rejection (in terms of p-value and level of significance) (5 points)
d) Find the p-value (5 points)
e) Should you reject or not reject HO? (5 points)
f) Do the data provide sufficient evidence to suggest the After scores are indeed higher? Why or why not? (5 points)

Expert Solution

orchestra answered 1 year ago

Perform the following hypothesis test of a proportion: HO: p = 0.125 HA: p 0.125 The sample...

Perform the following hypothesis test of a proportion: HO: p = 0.125 HA: p 0.125 The sample proportion is 0.1 based on a sample size of 95. Use a 10% significance level. The critical values of the test statistic that divide the rejection and non-rejection regions are what value? 5 points QUESTION 5 Continuing with Problem #4 (the previous problem): What is the value of the test statistic? (Give your answer rounded to 2 decimals) (Be careful to make sure your...

Thinking about the Ho and Ha, what kind of hypothesis test will you have to perform...

Thinking about the Ho and Ha, what kind of hypothesis test will you have to perform if you want to see the influence of the single IV on the DV: One-tailed test (left) One-tailed test (right) Two-tailed test 2. Why is the adjusted coefficient of determination different from the regular R2.

Please perform hypothesis test (F-test) Below is the output corresponding to a data set containing one...

Please perform hypothesis test (F-test) Below is the output corresponding to a data set containing one response variable, Y, and 4 predictor variables, var1, var2, var3, and var4. The var1, var2, and var3 predictor variables are quantitative and var4 is qualitative with levels A, B, and C. Only use var1 and var2 Obs Y var1 var2 var3 var4 1 33.2 3.5 9 6.1 A 2 40.3 5.3 20 6.4 A 3 38.7 5.1 18 7.4 A 4 36.8 5.6 27...

Using the data below, perform a two-way ANOVA. Test the hypothesis of interaction at the 1%...

Using the data below, perform a two-way ANOVA. Test the hypothesis of interaction at the 1% level of significance. Also, use a 1% level of significance to test the null hypotheses of equal column and equal row means. Factor Level 1 Level 2 Level A 14 16 18 12 16 16 Level B 10 12 16 12 12 14

A hypothesis test is to be performed with a Null hypothesis Ho: µ ≤ 20 and...

A hypothesis test is to be performed with a Null hypothesis Ho: µ ≤ 20 and an alternative hypothesis H1: µ > 20, the population standard deviation is σ=3.0, the sample size is; n=30, and the significance level is α=0.025. 1) what is a type l error? a. reject h0 when h0 is incorrect b. reject h0 when h0 is correct c. do not reject h0 when h0 is incorrect d. do not reject h0 when h0 is correct 2) What...

Preliminary data analyses indicates that use of a paired Wilcoxon signed-rank test is reasonable. Perform the...

Preliminary data analyses indicates that use of a paired Wilcoxon signed-rank test is reasonable. Perform the hypothesis test by using a paired Wilcoxon signed-rank test. Assume that the null hypothesis is Ho:u1=u2 In a study of the effectiveness of physical exercise in weight reduction, 12 subjects followed a program of physical exercise for two months. Their weights (in pounds) before and after this program are shown in the following table. before 162 190 188 152 148 127 195 164...

Assume that you are conducting a test with the following hypothesis Ho: μ = 11 vs...

Assume that you are conducting a test with the following hypothesis Ho: μ = 11 vs Ha: μ < 11. The test statistic for th test is t = -1.71 with a sample size of 30. What is the p-value for this test? Select one: a. between 0.005 and 0.01 b. between 0.100 and 0.050. c. between 0.02 and 0.01 d. between 0.05 and 0.025 e. between 0.0025 and 0.005

Perform the appropriate Hypothesis Test for the following (Be sure to have a null hypothesis (H0)...

Perform the appropriate Hypothesis Test for the following (Be sure to have a null hypothesis (H0) and alternate hypothesis; (H1). Explain how to find test statistic and P-value on the calculator; also Interpret the results (i.e. Reject or Fail to Reject H0), (Is or Is not significant evidence to support the claim H1). You want to see if all three college algebra classes have the same mean. Use the following data to test your claim at a .01 significance level....

Conduct a hypothesis test. Perform each of the following steps: a) state the hypothesis and identify...

Conduct a hypothesis test. Perform each of the following steps: a) state the hypothesis and identify the claim b) Find the critical value(s) c) Compute the test value d) make the decision e) Summarize the results It has been found that the average time users spend online per week is 18.3 hours. A random sample of 48 teenagers indicated that their mean amount of Internet time per week was 19.5 hours with a population standard deviation of 5.7. At the...

Activity 3: Which procedure? For each question, determine which inference procedure is appropriate (perform hypothesis test...

Activity 3: Which procedure? For each question, determine which inference procedure is appropriate (perform hypothesis test or construct a confidence interval), and identify the parameter of interest (p, p1 – p2, µ, µ1 – µ2, µd). What percentage of college students engage in underage drinking in their freshman year? Test or Interval Parameter What is the average change in a person’s heart rate when comparing measurements from before and after a scary scene in a horror film? Test or Interval...

Question