Question

A company wants to compare the mean number of days of sick leave for two classes of employees, those with less or equal to five years of service versus those with more than five years of service. The sample sizes are n1 = n2 = 100 employees, the sample means are x1 = 241 and x2 = 240 and the standard deviations of the two populations are ????1 = 8.2 days and ????2 = 5.7 days. The manager want to test the hypotheses: H0 : 1 ? 2 against H1 : 1 > 2. The p-value from the population difference in mean number of days of sick leave is equal to 1. 0.1587 2. 0.8413 3. 1.00 4. 0.3174 5. 0.9986

          A company wants to compare the mean number of days of sick leave for two classes of employees, those with less or equal to five years of service versus those with more than five years of service. The sample sizes are n1 = n2 = 100 employees, the sample means are x1 = 241 and x2 = 240 and the standard deviations of the two populations are ????1 = 8.2 days and ????2 = 5.7 days. The manager want to test the hypotheses: H0 : 1 ? 2 against H1 : 1 > 2. The p-value from the population difference in mean number of days of sick leave is equal to

1. 0.1587
2. 0.8413
3. 1.00
4. 0.3174
5. 0.9986

A company wants to compare the mean number of days of sick leave for two classes of employees, those with less or equal to five years of service versus those with more than five years of service. The sample sizes are n1 = n2 = 100 employees, the sample means are x1 = 241 and x2 = 240 and the standard deviations of the two populations are ????1 = 8.2 days and ????2 = 5.7 days. The manager want to test the hypotheses: H0 : 1 ? 2 against H1 : 1 > 2. The p-value from the population difference in mean number of days of sick leave is equal to

1. 0.1587
2. 0.8413
3. 1.00
4. 0.3174
5. 0.9986

Added by Barry H.

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