5.2

What is the difference between a random sample and a convenience sample?

5.6

What does it mean to replicate research, and how does replication impact our confidence?

5.16

One step in hypothesis testing is to randomly assign some members of the sample to the control group and some to the experimental group. What is the difference between these two groups?

5.20

Forty-three tractor trailers are parked for the night in a rest stop along a major highway. You assign each truck a member from 1 to 43. Moving from left to right and using the second line in the random numbers table below, select four trucks to weigh as they leave the rest stop in the morning.

001902715783208794469298761357

237985542532454346113960539981

853065799568222390554389036956

997193603674274539013464306157

5.26

What is the probability of hitting a target if, the long run, 71 out of every 489 attempts actually hit the target?

5.28

Convert the following proportions to percentages:

a.0.0173

b.0.8

c.0.3719