Whenever using the t distribution in interval estimation, we must ...

[kwoodring]

Whenever using the t distribution in interval estimation, we must assume that _____.
 a. the sample size is less than 30
  b. a random sample was selected
  c. the population is approximately normal
  d. the finite population correction factor is necessary

Question 2

Excel's NORM.S.INV function can be used to compute _____.
 a. cumulative probabilities for a standard normal z value
  b. the standard normal z value given a cumulative probability
  c. cumulative probabilities for a normally distributed x value
  d. the normally distributed x value given a cumulative probability

[ririgirl15]

Answer to Question 1

b

Answer to Question 2

b

[kwoodring]

Gracias!

[Alyson.hiatt@yahoo.com]

Thanks for the timely response, appreciate it