Author Question: Suppose a survey is taken of two groups of people where each person is asked a yes/no question and ... (Read 71 times)

geodog55 · **on:** Jun 24, 2018

Suppose a survey is taken of two groups of people where each person is asked a yes/no question and the proportion of people who answer yes is calculated for each group.

Which of the following is true about a hypothesis test of the difference in the two proportions?A) Normality can be assumed if the sample size for each population is at least 30.
B) The t-distribution should be used if the standard deviations are unknown.
C) The standard deviation must be assumed equal.
D) Normality can be assumed if, in each group, at least 5 people say yes, and at 5 people say no.

Question 2

The constraint that models the stated price range of a standard suite is ________.

A) 70 S 90
B) 90S2 - 70S 0
C) 70S2 - 90S 0
D) 35 S 45