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1. Use the following data to answer Questions 1a and 1b.
Total no. of problems correct (out of a possible 20) Attitude toward test taking (out of a possible 100)
17 94
13 73
12 59
15 80
16 93
14 85
16 66
16 79
18 77
19 91
a. Compute the Pearson product-moment correlation coefficient in SPSS and paste your output in this worksheet.
b. Construct a scatterplot for these 10 values. Based on the scatterplot, would you predict the correlation to be direct or indirect? Why?
show work or explain how you got the answersuppose that an eddy current nondestructive evaluation technique for
A clinical trial is run to investigate the effectiveness of an experimental drug in reducing preterm delivery to a drug considered standard care and to placebo.
Develop a linear regression equation for these data and forecast how much money Robert will win if he spends $30.
Present the estimated model. Give an interpretation of the coefficient of determination (r2). List the adjusted r2. Use the F-test to test the validity of the model as a whole at a 5% level of significance.
Conduct a "quasi-experiment" by gathering the following data: age and height of 20 people.
A standard deviation of 218 KWh. For a randomly selected home, find the probability that the February energy consumption level is greater than 1,000 KWh.
Are the nonprice variables jointly significant in the LPM? (Use the usual F statis- tic, even though it is not valid when there is heteroskedasticity.) Which explana- tory variable other than the price variables seems to have the most important ef..
Select a variable. Compare the mean of the variable for a sample of 30 for one group with the mean of the variable for a sample of 30 for a second group. Use a z test.
a club consists of 42 women and 33 men.a how mant ways can the club choose a chairperson and recording secretary?b how
Estimate the number of cards in the sample for which Clara correctly guesses the suit by giving the mean of the relevant distribution (that is, the expectation of the relevant random variable). Do not round your response.
a trucking firm delivers appliances for a large retail operation. the packages or crates have a mean weight of 291 lb.
What was the proportion of children who did not participate in swimming and What was the proportion of children who neither participated in swimming
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