4/15/25, 10:46 BUAL2650 Exam 2 (Halpin) |
AM
BUAL2650 EXAM 2 (HALPIN) EXAM QUESTIONS AND
ANSWERS WITH COMPLETE SOLUTIONS
3.0 (3 reviews)
Save
An efficiency expert claims that a new ergonomic desk chair makes typing at
a computer terminal easier and faster. To test it, 15 volunteers are selected.
Using both the new chair and their old chair, each volunteer types a randomly
selected passage for 2 minutes and the number of correct words typed is
B: The data should be treated as recorded.
paired samples. Each pair consists of a
volunteer using each chair. A. The data should be treated as independent samples because the samples
are random.
B. The data should be treated as paired samples. Each pair consists of a
volunteer using each chair.
C. The data should be treated as paired samples. Each pair consists of the
number of correct words typed each minute.
A developer wants to know if the houses in two different neighborhoods have the
same mean price. She selects 10 houses from each neighborhood at random and
tests the null hypothesis that the means are equal.
C: The data should be treated as
independent samples because the A. The data should be treated as paired samples. Each pair consists of the
samples are random within each mean prices of different neighborhoods.
neighborhood. B. The data should be treated as paired samples. Each pair consists of the
price of a house in each of the neighborhoods.
C. The data should be treated as independent samples because the samples
are random within each neighborhood.
A manager wants to know if the mean productivity of two workers is the same.
For a random selection of 30 hours in the past month, he compares the
number of items produced by each worker in that hour.
A: The data should be treated as
paired samples. Each pair consists of an A. The data should be treated as paired samples. Each pair consists of an hour
hour in which the productivity of the two in which the productivity of the two workers is compared.
workers is compared. B. The data should be treated as paired samples. Each pair consists of two
hours in which the number of items produced is compared.
C. The data should be treated as independent samples because the samples
are random.
An efficiency expert claims that a new ergonomic desk chair makes typing at
a computer terminal easier and faster. To test it, 35 volunteers are selected. Half
of the volunteers will use the new chair and half will use their old chairs. Each
volunteer types a randomly selected passage for 2 minutes and the number
of correct words typed is recorded.
A: The data are independent and not
paired.
A. The data are independent and not paired.
B. The data are paired where the pairing involves the volunteers who use the
new chair and the volunteers who use their old chair.
C. The data are paired where the pairing involves the random passages
the volunteers type.
1/
3
AM
BUAL2650 EXAM 2 (HALPIN) EXAM QUESTIONS AND
ANSWERS WITH COMPLETE SOLUTIONS
3.0 (3 reviews)
Save
An efficiency expert claims that a new ergonomic desk chair makes typing at
a computer terminal easier and faster. To test it, 15 volunteers are selected.
Using both the new chair and their old chair, each volunteer types a randomly
selected passage for 2 minutes and the number of correct words typed is
B: The data should be treated as recorded.
paired samples. Each pair consists of a
volunteer using each chair. A. The data should be treated as independent samples because the samples
are random.
B. The data should be treated as paired samples. Each pair consists of a
volunteer using each chair.
C. The data should be treated as paired samples. Each pair consists of the
number of correct words typed each minute.
A developer wants to know if the houses in two different neighborhoods have the
same mean price. She selects 10 houses from each neighborhood at random and
tests the null hypothesis that the means are equal.
C: The data should be treated as
independent samples because the A. The data should be treated as paired samples. Each pair consists of the
samples are random within each mean prices of different neighborhoods.
neighborhood. B. The data should be treated as paired samples. Each pair consists of the
price of a house in each of the neighborhoods.
C. The data should be treated as independent samples because the samples
are random within each neighborhood.
A manager wants to know if the mean productivity of two workers is the same.
For a random selection of 30 hours in the past month, he compares the
number of items produced by each worker in that hour.
A: The data should be treated as
paired samples. Each pair consists of an A. The data should be treated as paired samples. Each pair consists of an hour
hour in which the productivity of the two in which the productivity of the two workers is compared.
workers is compared. B. The data should be treated as paired samples. Each pair consists of two
hours in which the number of items produced is compared.
C. The data should be treated as independent samples because the samples
are random.
An efficiency expert claims that a new ergonomic desk chair makes typing at
a computer terminal easier and faster. To test it, 35 volunteers are selected. Half
of the volunteers will use the new chair and half will use their old chairs. Each
volunteer types a randomly selected passage for 2 minutes and the number
of correct words typed is recorded.
A: The data are independent and not
paired.
A. The data are independent and not paired.
B. The data are paired where the pairing involves the volunteers who use the
new chair and the volunteers who use their old chair.
C. The data are paired where the pairing involves the random passages
the volunteers type.
1/
3
