A sample of 4 different calculators is randomly selected from a ...

[mia]

A sample of 4 different calculators is randomly selected from a group containing 16 that are defective and 30 that have no defects. What is the probability that at least one of the calculators is defective?
 
  A) 0.819 B) 0.160 C) 0.832 D) 0.168

Question 2

If the null hypothesis is rejected in a one-factor between-subjects analysis of variance on three groups, then it may be concluded that the .
 
  a. three sample means were not obtained from populations with identical means
  b. three sample means were obtained from populations with identical means
  c. sample means are not equal to the population means
  d. variances of the sample means are not equal to the variances of the means in thepopulations

[kiamars2010]

Answer to Question 1

C

Answer to Question 2

A

[mia]

Excellent

[ecabral0]

Gracias!