A cable company prepared four versions of a set of instructions ...

[joblessjake]

A cable company prepared four versions of a set of instructions for hooking up a TV. The company asked a sample of 1,600 people which one of the four forms was easiest to understand. In the sample, 425 people preferred Form A, 385 preferred Form B, 375 preferred Form C, and 415 preferred Form D. At the 5 level of significance, can one conclude that in the population there is a preferred form?

Question 2

The preposterior analysis determines whether or not sample information should be purchased to revise the prior probabilities associated with the states of nature.
  Indicate whether the statement is true or false

[Fayaz00962]

Answer to Question 1

H0: p1 = p2 = p3 = p4 = .25
H1: At least one proportion differs from their specified values
Rejection region: 2 > 20.05,3 = 7.815
Test statistic: 2 = 4.25
Conclusion: Cannot reject the null hypothesis. There is no preferred form, according to the data.

Answer to Question 2

T

[joblessjake]

TYSM

[diana chang]

Gracias!