Suppose 150 customers of a restaurant are chosen for a sample, but only 30 respond. What is this an example of?
A. Selection bias
B. Nonselection bias
C. Nonresponse bias
D. Response bias

The correct answer is:

Nonresponse bias (C.)

Step-by-step explanation:

Nonresponse bias in sampling is one that arises due to the unwillingness or inability of subjects in a population to participate in a survey.

175

step-by-step explanation:

2 inches x 10 miles = 200 miles - 3 inches = 175

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.