Assume that the histogram of a data set is symmetric and bell ...

[B]

Assume that the histogram of a data set is symmetric and bell shaped, with a mean of 75 and standard deviation of 10 . Then, approximately 95 of the data values were between 55 and 95.
 a. True
  b. False
   Indicate whether the statement is true or false

Question 2

The pooled-variances t-test requires that the two population variances need not be the same.
  Indicate whether the statement is true or false

[mfedorka]

Answer to Question 1

TRUE

Answer to Question 2

F

[B]

Thanks for the timely response, appreciate it

[dantucker]

Excellent