A sample of male and female students were equipped with a device that records sound for one day. Data about number of words spoken per day are presented below: Mean Standard Deviation Males (n=56) 16177 7520 Answer the following: 1. Upper Limit 2. Lower Limit Females (n=56) 16569 9108 Construct a 99% confidence interval for the difference in the mean number of words spoken by males and females. Assume the population variances to be unknown and unequal.
A sample of male and female students were equipped with a device that records sound for one day. Data about number of words spoken per day are presented below: Mean Standard Deviation Males (n=56) 16177 7520 Answer the following: 1. Upper Limit 2. Lower Limit Females (n=56) 16569 9108 Construct a 99% confidence interval for the difference in the mean number of words spoken by males and females. Assume the population variances to be unknown and unequal.
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Instruction: No immediate rounding. Round off final answers to 4 decimal places.
Transcribed Image Text:A sample of male and female students were equipped with a device that records sound for one
day. Data about number of words spoken per day are presented below:
Mean
Standard
Deviation
Males
(n=56)
16177
7520
Answer the following:
1. Upper Limit
2. Lower Limit
Females
(n=56)
16569
9108
Construct a 99% confidence interval for the difference in the mean number of words spoken by
males and females. Assume the population variances to be unknown and unequal.
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