An industrial psychologist feels that a big factor in job turnover among assembly-line workers is the individual employees' self- esteem. He thinks that workers who change jobs often (population A) have, on the average, lower self-esteem, as measured by standardized test, than workers who do not (population B). To determine whether he can support his belief with statistical analysis, he draws a simple random sample of employees from each population and gives a test measuring self-esteem. The results are as follows. At 0.05 level of significance and assuming equal variances. Мean Standard Deviation Sample size A 52.3 9.23 10 B 69.47 11.78 17 Which of the following is the conclusion that could be reached as result of hypothesis testing? O a. Workers who change their jobs often have same level of self-esteem with those who do not change their jobs often. O b. Workers who do not change their jobs often have higher self-esteem than those who change their jobs often. O . Workers who change their jobs often have lower self-esteem than those who do not change their jobs often. O d. Workers who change their jobs often do not have lower self-esteem than those who do not change their jobs often.

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An industrial psychologist feels that a big factor in job turnover among assembly-line workers is the individual employees' self-
esteem. He thinks that workers who change jobs often (population A) have, on the average, lower self-esteem, as measured by
standardized test, than workers who do not (population B). To determine whether he can support his belief with statistical
analysis, he draws a simple random sample of employees from each population and gives a test measuring self-esteem. The
results are as follows. At 0.05 level of significance and assuming equal variances.
Mean
Standard Deviation Sample size
A
52.3
9.23
10
B
69.47
11.78
17
Which of the following is the conclusion that could be reached as result of hypothesis testing?
O a. Workers who change their jobs often have same level of self-esteem with those who do not change their jobs often.
O b. Workers who do not change their jobs often have higher self-esteem than those who change their jobs often.
O . Workers who change their jobs often have lower self-esteem than those who do not change their jobs often.
O d. Workers who change their jobs often do not have lower self-esteem than those who do not change their jobs often.
Transcribed Image Text:An industrial psychologist feels that a big factor in job turnover among assembly-line workers is the individual employees' self- esteem. He thinks that workers who change jobs often (population A) have, on the average, lower self-esteem, as measured by standardized test, than workers who do not (population B). To determine whether he can support his belief with statistical analysis, he draws a simple random sample of employees from each population and gives a test measuring self-esteem. The results are as follows. At 0.05 level of significance and assuming equal variances. Mean Standard Deviation Sample size A 52.3 9.23 10 B 69.47 11.78 17 Which of the following is the conclusion that could be reached as result of hypothesis testing? O a. Workers who change their jobs often have same level of self-esteem with those who do not change their jobs often. O b. Workers who do not change their jobs often have higher self-esteem than those who change their jobs often. O . Workers who change their jobs often have lower self-esteem than those who do not change their jobs often. O d. Workers who change their jobs often do not have lower self-esteem than those who do not change their jobs often.
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