Question

Do male college students spend more time than female college
students using a computer? This was one of the questions
investigated by the authors of an article. Each student in a random
sample of 46 male students at a university in England and each
student in a random sample of 38 female students from the same
university kept a diary of how he or she spent time over a
three-week period.

For the sample of males, the mean time spent using a computer per
day was 45.3 minutes and the standard deviation was 63.3 minutes.
For the sample of females, the mean time spent using a computer was
39.1 minutes and the standard deviation was 57.3 minutes. Is there
convincing evidence that the mean time male students at this
university spend using a computer is greater than the mean time for
female students? Test the appropriate hypotheses using

*α* = 0.05.

(Use a statistical computer package to calculate the
*P*-value. Use *μ*_{males} −
*μ*_{females}. Round your test statistic to two
decimal places, your df down to the nearest whole number, and your
*P*-value to three decimal places.)

t=

df=

p value=

Answer #1

Given that,

For males: n1 = 46, x1-bar = 45.3 minutes and s1 = 63.3 minutes

For Females : n2 =38, x2-bar =39.1 minutes and s2 =57.3 minutes

The null and alternative hypotheses are,

H0 : μmales - μfemales = 0

Ha : μmales - μfemales > 9

Using TI-83 plus calculator we get,

Test statistic = t = **0.47**

Degrees of freedom = df = **81**

p-value = **0.320**

Do male college students spend more time than female college
students using a computer? This was one of the questions
investigated by the authors of an article. Each student in a random
sample of 46 male students at a university in England and each
student in a random sample of 38 female students from the same
university kept a diary of how he or she spent time over a
three-week period.
For the sample of males, the mean time spent...

Do male college students spend more time than female college
students using a computer? This was one of the questions
investigated by the authors of an article. Each student in a random
sample of 46 male students at a university in England and each
student in a random sample of 38 female students from the same
university kept a diary of how he or she spent time over a
three-week period.
For the sample of males, the mean time spent...

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For the sample of males, the mean time spent watching...

Do female college students spend more time than male college
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the authors of an article. Each student in a random sample of 46
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