STAT. FOR BEHAVIORAL SCIENCES WEBASSIGN
3rd Edition
ISBN: 9781544317823
Author: PRIVITERA
Publisher: Sage Publications
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Chapter 11.9, Problem 4.2LC
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The table shows the total square footage (in billions) of retailing space at shopping centers and their sales (in billions of dollars) for 10 years. Construct a 90% prediction interval for sales when the
total square footage is 5.7 billion. The equation of the regression line is y = 567.939x - 1985.560.
Total
4.9 5.2 5.3 5.4
5.5
5.6
5.9
5.9 5.9 6.1
Square Footage, x
Sales, y
880.1 935.5 989.5 1056.9 1100.7 1201.9 1283.4 1346.3 1434.8 1549.5
Click the icon to view a table of critical values for the t-distribution.
Construct a 90% prediction interval for the sales when the total square footage is 5.7 billion. Choose the correct prediction interval below, rounded to the nearest million dollars.
The maximum weights (in kilograms) for which one repetition of a half squat can be performed and the times (in seconds) to run a 10-meter sprint for 12 international soccer players are shown in the
attached data table with a sample correlation coefficient r of -0.941. A 13th data point was added to the end of the data set for an international soccer player who can perform the half squat with a
maximum of 205 kilograms and can sprint 10 meters in 2.01 seconds. Describe how this affects the correlation coefficient r. Use technology.
Click the icon to view the data set.
The new correlation coefficient r
(Round to three decimal places a
going from 0.941 to
-
gets stronger,
gets weaker,
stays the same,
You receive a brochure from a large university. The brochure indicates that the mean class size for full-time faculty is fewer than 31 students. You want to test this claim. You randomly select 18
classes taught by full-time faculty and determine the class size of each. The results are shown in the table below. At α = 0.05, can you support the university's claim? Complete parts (a) through (d)
below. Assume the population is normally distributed.
36
28
25
27
29
35
32
39
31
28
380
22
26
29
24
27
24
30吋
24
(a) Write the claim mathematically and identify Ho and Ha.
Which of the following correctly states Ho and H₂?
○ A. Ho: μ31
Нa: μ≤31
E. Ho: "=31
Ha: μ 31
OF. Ho: μ=31
Нa: μ31
Chapter 11 Solutions
STAT. FOR BEHAVIORAL SCIENCES WEBASSIGN
Ch. 11.2 - Prob. 1.1LCCh. 11.2 - Prob. 1.2LCCh. 11.2 - Prob. 1.3LCCh. 11.2 - Prob. 1.4LCCh. 11.3 - Prob. 2.1LCCh. 11.3 - Prob. 2.2LCCh. 11.3 - Prob. 2.3LCCh. 11.5 - Prob. 3.1LCCh. 11.5 - Prob. 3.2LCCh. 11.5 - Prob. 3.3LC
Ch. 11.9 - Prob. 4.1LCCh. 11.9 - Prob. 4.2LCCh. 11.9 - Prob. 4.3LCCh. 11.9 - Prob. 4.4LCCh. 11.10 - Prob. 5.1LCCh. 11.10 - Prob. 5.2LCCh. 11 - Prob. 1FPCh. 11 - Prob. 2FPCh. 11 - Prob. 3FPCh. 11 - Prob. 4FPCh. 11 - Prob. 5FPCh. 11 - Prob. 6FPCh. 11 - Prob. 7FPCh. 11 - Prob. 8FPCh. 11 - Prob. 9FPCh. 11 - Prob. 10FPCh. 11 - Prob. 11FPCh. 11 - Prob. 12FPCh. 11 - Prob. 13CAPCh. 11 - Prob. 14CAPCh. 11 - Prob. 15CAPCh. 11 - Prob. 16CAPCh. 11 - Prob. 17CAPCh. 11 - Prob. 18CAPCh. 11 - Prob. 19CAPCh. 11 - Prob. 20CAPCh. 11 - Prob. 21CAPCh. 11 - Prob. 22CAPCh. 11 - Prob. 23CAPCh. 11 - Prob. 24CAPCh. 11 - Prob. 25CAPCh. 11 - Prob. 26CAPCh. 11 - Prob. 27CAPCh. 11 - Prob. 28CAPCh. 11 - Prob. 29PRCh. 11 - Prob. 30PRCh. 11 - Prob. 31PRCh. 11 - Prob. 32PRCh. 11 - Prob. 33PRCh. 11 - Prob. 34PR
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