BSTAT 3321 Chapter 7 questions with complete
solutions already passed
1. Beer bottles are filled so that they contain an
average of 480 ml of beer in each bottle.
Suppose that the amount of beer in a bottle
is normally distributed with a standard
deviation of 7 ml.
2. Nonresponse bias occurs when .
3. At an exhibit in the Museum of Science, people
are asked to choose between 90 or 175
random draws from a machine. The machine is
known to have 91 green balls and 98 red balls.
After each draw, the color of the ball is noted
and the ball is put back for the next draw. You
win a prize if more than 55% of the draws
result in a green ball.
4. Bias can occur in sampling. Bias refers to .
5. Selection bias occurs when .
1/
8
,BSTAT 3321 Chapter 7 questions with complete
solutions already passed
6. A recent survey found that 82% of college
graduates believe their degree was a good
investment (cnbc.com, February 27, 2020).
Suppose a random sample of 100 college
graduates is taken.
2/
8
solutions already passed
1. Beer bottles are filled so that they contain an
average of 480 ml of beer in each bottle.
Suppose that the amount of beer in a bottle
is normally distributed with a standard
deviation of 7 ml.
2. Nonresponse bias occurs when .
3. At an exhibit in the Museum of Science, people
are asked to choose between 90 or 175
random draws from a machine. The machine is
known to have 91 green balls and 98 red balls.
After each draw, the color of the ball is noted
and the ball is put back for the next draw. You
win a prize if more than 55% of the draws
result in a green ball.
4. Bias can occur in sampling. Bias refers to .
5. Selection bias occurs when .
1/
8
,BSTAT 3321 Chapter 7 questions with complete
solutions already passed
6. A recent survey found that 82% of college
graduates believe their degree was a good
investment (cnbc.com, February 27, 2020).
Suppose a random sample of 100 college
graduates is taken.
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8
