The sample size needed to estimate a population mean to within 50 ...

[2125004343]

The sample size needed to estimate a population mean to within 50 units was found to be 97 . If the population standard deviation was 250, then the confidence level used was
 a. 90
  b. 95
  c. 99
  d. None of these choices.

Question 2

There are several clues to the presence of multicollinearity. One clue is when a regression coefficient exhibits the wrong ___________________ _.
 Fill in the blank(s) with correct word

[heinisk01]

Answer to Question 1

B

Answer to Question 2

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[2125004343]

Thanks for the timely response, appreciate it

[sailorcrescent]

TYSM