Math 10
Quiz: Ch. 10
Name
In questions 1 – 8 indicate which of the following choices best identifies the hypothesis test.
Write the letter for the correct answer in the space provided after the question.
Two points per question (1 bonus point).
A.
B.
C.
D.
E.
F.
G.
Independent group means, population standard deviation known
Independent group means, population standard deviation unknown
Matched or paired samples
Single mean, population standard deviation known
Single mean, population standard deviation unknown
2 proportions
Single proportion
1. Heart attacks appear to increase after heavy snowfalls. A study compared the effect on the heart
of snow shoveling to the effect on the heart of clearing snow using an electric snow blower. Ten
subjects were selected and each subject cleared snow using both methods. Their heart rates (beats
per minute) were recorded during both activities. Of interest is the average difference in heart rates.
Answer: _______
2. Members of a bowling league want to test whether the lanes at two different locations affect their
bowling scores. One Sunday afternoon, eight randomly selected members of this league bowl at
Homestead Brunswick Lanes, while at the same time another eight randomly selected league
members bowl at Moonlight Lanes. The average scores for bowlers at each location are compared
in a hypothesis test.
Answer: _______
3. In a test of a new medication 2.7 % of those patients using the drug experience dizziness. In the
same clinical test, 1.8 % of the patients given a placebo experience dizziness. A hypothesis test is
performed to determine whether the proportion of patients using the drug who experience dizziness
is greater than the proportion of patients receiving the placebo who experienced dizziness.
Answer: _______
4. It has been claimed that 41% of all adults who have credit cards pay off their balances in full
each month. You randomly sample 100 college students to determine whether the proportion of
college students with credit cards who pay off their balance in full each month differs from the rate
claimed for all adults.
Answer: _______
In questions 1 – 8 indicate which of the following choices best identifies the hypothesis test.
Write the letter for the correct answer in the space provided after the question.
A.
B.
C.
D.
E.
F.
G.
Independent group means, population standard deviation known
Independent group means, population standard deviation unknown
Matched or paired samples
Single mean, population standard deviation known
Single mean, population standard deviation unknown
2 proportions
Single proportion
5. In a food processing plant, 16 ounce boxes of Krunchie-O cereal are filled by a machine.
The actual amount put in each box is known to vary with a standard deviation of 0.3 ounces.
The supervisor randomly selects a sample of 40 boxes of cereal and finds that average weight for
boxes in the sample is 15.97 ounces. A hypothesis test is performed to determine whether the
average weight of cereal in a box is different than 16 ounces.
Answer: _______
6. A study is done to determine if students in private schools score higher on a certain standardized
test than those in public schools. 100 students from private schools and 250 students from public
schools are selected. The average exam score for each sample is calculated and compared using a
hypothesis test. From years of past records, it is known that the population standard deviations are
27 and 32 points respectively.
Answer: _______
7. A recent study asked adults with credit cards how many different credit cards they use.
The study revealed that for US adults who have credit cards, the average number of cards that they
use is 4.0.
Answer: _______
8. A new job training program is tested on 15 individuals. Pre and post course productivity scores
are recorded. Of interest is the average increase in productivity.
Answer: _______
Spring 2002 Class Time:
Name
Quiz Ch. 10
In questions 1 – 8 indicate which of the following choices best identifies the hypothesis test.
Write the letter for the correct answer in the space provided after the question.
Two points per question (1 bonus point).
A.
B.
C.
D.
E.
F.
G.
Independent group means, population standard deviation known
Independent group means, population standard deviation unknown
Matched or paired samples
Single mean, population standard deviation known
Single mean, population standard deviation unknown
2 proportions
Single proportion
1. A study is done to determine if students in private schools score higher on a certain standardized
test than those in public schools. 100 students from private schools and 250 students from public
schools are selected. The average exam score for each sample is calculated and compared using a
hypothesis test. From years of past records, it is known that the population standard deviations are
27 and 32 points respectively.
Answer: _______
2. It has been claimed that 41% of all adults who have credit cards pay off their balances in full
each month. You randomly sample 100 college students to determine whether the proportion of
college students with credit cards who pay off their balance in full each month differs from the rate
claimed for all adults.
Answer: _______
3 A new job training program is tested on 15 individuals. Pre and post course productivity scores
are recorded. Of interest is the average increase in productivity.
Answer: _______
4. In a test of a new medication 2.7 % of those patients using the drug experience dizziness. In the
same clinical test, 1.8 % of the patients given a placebo experience dizziness. A hypothesis test is
performed to determine whether the proportion of patients using the drug who experience dizziness
is greater than the proportion of patients receiving the placebo who experienced dizziness.
Answer: _______
TURN OVER FOR QUESTIONS 5 THROUGH 8
In questions 1 – 8 indicate which of the following choices best identifies the hypothesis test.
Write the letter for the correct answer in the space provided after the question.
A.
B.
C.
D.
E.
F.
G.
Independent group means, population standard deviation known
Independent group means, population standard deviation unknown
Matched or paired samples
Single mean, population standard deviation known
Single mean, population standard deviation unknown
2 proportions
Single proportion
5. A recent study asked adults with credit cards how many different credit cards they use.
The study revealed that for US adults who have credit cards, the average number of cards that they
use is 4.0.
Answer: _______
6. Heart attacks appear to increase after heavy snowfalls. A study compared the effect on the heart
of snow shoveling to the effect on the heart of clearing snow using an electric snow blower. Ten
subjects were selected and each subject cleared snow using both methods. Their heart rates (beats
per minute) were recorded during both activities. Of interest is the average difference in heart rates.
Answer: _______
7. In a food processing plant, 16 ounce boxes of Krunchie-O cereal are filled by a machine.
The actual amount put in each box is known to vary with a standard deviation of 0.3 ounces.
The supervisor randomly selects a sample of 40 boxes of cereal and finds that average weight for
boxes in the sample is 15.97 ounces. A hypothesis test is performed to determine whether the
average weight of cereal in a box is different than 16 ounces.
Answer: _______
8. Members of a bowling league want to test whether the lanes at two different locations affect their
bowling scores. One Sunday afternoon, eight randomly selected members of this league bowl at
Homestead Brunswick Lanes, while at the same time another eight randomly selected league
members bowl at Moonlight Lanes. The average scores for bowlers at each location are compared
in a hypothesis test.
Answer: _______