plese help with statistic questions???????

Posted on 2014-11-27 07:50:00 in Statistics by LUCA

Q 1. The critical value for a two-tailed test of H0: ?1 = 0 at ? = .05 in a simple regression with 22 observations is:

A 1.725
B 2.086
C 2.528
D 1.960

Q 2. Amelia used a random sample of 100 accounts receivable to estimate the relationship between Days (number of days from billing to receipt of payment) and Size (size of balance due in dollars). Her estimated regression equation was Days = 22 + 0.0047 Size with a correlation coefficient of .300. From this information we can conclude that:

A. 9 percent of the variation in Days is explained by Size.
B autocorrelation is likely to be a problem.
C the relationship between Days and Size is significant.
D larger accounts usually take less time to pay.

Q 3. If the attendance at a baseball game is to be predicted by the equation Attendance = 16,500 - 75 Temperature, what would be the predicted attendance if Temperature is 90 degrees?

A 6,750
B 9,750
C 12,250
D 10, 020

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