Your manager wants to know whether there is a significant difference between the
ID: 3059622 • Letter: Y
Question
Your manager wants to know whether there is a significant difference between the average times required to complete a particular task for operators using either Tyrol or Taylor forklifts. _____
YumYum Candy Company sells a jelly bean mixture. The company claims that 30% of the jelly beans are cherry flavored, 60% are lemon, and 10% are peach. The jelly beans are sold in packages of 100. Suppose a randomly-selected package of jelly beans has 50 cherry, 45 lemon, and 5 peach jelly beans. Is this consistent with YumYum’s claim? _____
An auto parts store has a customer satisfaction rating of 88 percent. Is this store’s rating significantly different from the national average of 94 percent? ___
A company is testing a new diet pill. They ask a group of 37 people to rate their hunger before taking the pill and after taking the pill. Then they examine the results to see if there was a significant improvement in hunger ratings. __
Suzanne has been asked to write the instructions for a new stain remover. Two hours before her work will be presented to the client, she suddenly has doubts about the clarity of a paragraph she has written. She goes down the hallway at work and asks the first 6 people she meets whether the paragraph is “clear” or “unclear” to them. ___
A consultant is studying brand loyalty for tools used in hip replacement surgery. Her client is Ascend-Med. They are particularly interested in attracting customers from the industry leader Luxe-Device. The consultant has a limited budget. So instead of talking to everyone, she only surveys orthopedic surgeons who say they are current Luxe-Device customers. ___
A. Simple random
B. Stratified
C. Judgment
D. Convenience
E. Cluster
F. Snowball
G. Ex post facto
H. Chi-square test
I. ANOVA
J. Stability
K. Regression
L. Extrapolation
M. Two-related-samples test
N. Two-independent-samples test
O. One-sample test
P. Intra-rater
Q. Systematic
Your manager wants to know whether there is a significant difference between the average times required to complete a particular task for operators using either Tyrol or Taylor forklifts. _____
YumYum Candy Company sells a jelly bean mixture. The company claims that 30% of the jelly beans are cherry flavored, 60% are lemon, and 10% are peach. The jelly beans are sold in packages of 100. Suppose a randomly-selected package of jelly beans has 50 cherry, 45 lemon, and 5 peach jelly beans. Is this consistent with YumYum’s claim? _____
An auto parts store has a customer satisfaction rating of 88 percent. Is this store’s rating significantly different from the national average of 94 percent? ___
A company is testing a new diet pill. They ask a group of 37 people to rate their hunger before taking the pill and after taking the pill. Then they examine the results to see if there was a significant improvement in hunger ratings. __
Suzanne has been asked to write the instructions for a new stain remover. Two hours before her work will be presented to the client, she suddenly has doubts about the clarity of a paragraph she has written. She goes down the hallway at work and asks the first 6 people she meets whether the paragraph is “clear” or “unclear” to them. ___
A consultant is studying brand loyalty for tools used in hip replacement surgery. Her client is Ascend-Med. They are particularly interested in attracting customers from the industry leader Luxe-Device. The consultant has a limited budget. So instead of talking to everyone, she only surveys orthopedic surgeons who say they are current Luxe-Device customers. ___
A. Simple random
B. Stratified
C. Judgment
D. Convenience
E. Cluster
F. Snowball
G. Ex post facto
H. Chi-square test
I. ANOVA
J. Stability
K. Regression
L. Extrapolation
M. Two-related-samples test
N. Two-independent-samples test
O. One-sample test
P. Intra-rater
Q. Systematic
Explanation / Answer
1)Your manager wants to know whether there is a significant difference between the average times required to complete a particular task for operators using either Tyrol or Taylor forklifts.
Answer: N. Two-independent-samples test because the time taken by operator using Tyrol is independent of operator using Taylor forklifts.
2) YumYum Candy Company sells a jelly bean mixture. The company claims that 30% of the jelly beans are cherry flavored, 60% are lemon, and 10% are peach. The jelly beans are sold in packages of 100. Suppose a randomly-selected package of jelly beans has 50 cherry, 45 lemon, and 5 peach jelly beans. Is this consistent with YumYum’s claim?
Answer: H. Chi-square test
3) An auto parts store has a customer satisfaction rating of 88 percent. Is this store’s rating significantly different from the national average of 94 percent?
Answer: O. One-sample test - - for propotion
4) A company is testing a new diet pill. They ask a group of 37 people to rate their hunger before taking the pill and after taking the pill. Then they examine the results to see if there was a significant improvement in hunger ratings.
Answer: M. Two-related-samples test because the data is collecetd from the same sample units in pairs i.e. before taking abd after taking the pills.
5) Suzanne has been asked to write the instructions for a new stain remover. Two hours before her work will be presented to the client, she suddenly has doubts about the clarity of a paragraph she has written. She goes down the hallway at work and asks the first 6 people she meets whether the paragraph is “clear” or “unclear” to them.
Answer: D. Convenience because she selectes samples according to her convenience, that sampl may be not representative of the population.
6) A consultant is studying brand loyalty for tools used in hip replacement surgery. Her client is Ascend-Med. They are particularly interested in attracting customers from the industry leader Luxe-Device. The consultant has a limited budget. So instead of talking to everyone, she only surveys orthopedic surgeons who say they are current Luxe-Device customers.
Answer: C. Judgment because sampling unit are selected based on the judgement( selects only orthopedic surgeon) of consultant.
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