Question
In: Statistics and Probability
****Using excel** A graduate student believed that, on the average, college students spend more time on...
****Using excel**
A graduate student believed that, on the average, college students spend more time on the Internet compared to the rest of the population. She conducted a study to determine if her hypothesis was correct. The student randomly surveyed 25 students and found that the average amount of time spent on the Internet was 12.75 hours per week with a SD = 3 hours. The last census found that, on the average, people spent 11 hour per week on the Internet.
a. What does the null hypothesis predict for the problem described above. (Be sure to use the variables given in the description.)
b. (using excel) Conduct a statistical test of the null hypothesis using p = .05.
c. Provide an interpretation of your statistical conclusion to part B.
d. What type of statistical error might you have made in part C.
e. (using excel) Obtain the 95% confidence interval for the sample statistic.
f. Provide an interpretation for the interval obtained in part E.
Solutions
orchestra answered 2 years agoRelated Solutions
Do male college students spend more time than female college students using a computer? This was...
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
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For the sample of males, the mean time spent...
Do male college students spend more time studying than female college students? This was one of...
Do male college students spend more time studying than female
college students? 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 3-week period.
For the sample of males, the mean time spent studying per...
Do female college students spend more time than male college students watching TV? This was one...
Do female college students spend more time than male college
students watching TV? 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 watching...
Do female college students spend more time than male college students watching TV? This was one...
Do female college students spend more time than male college
students watching TV? 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 watching...
Do female college students spend more time than male college students watching TV? This was one...
Do female college students spend more time than male college
students watching TV? 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 watching...
A student set out to see if female students spend more time studying than male students....
A student set out to see if female students spend more
time studying than male students. He randomly surveyed 30 females
and 30 males and asked them how much time they spend studying, on
average, per day. The data is obtained is shown below.
H0: mean study time for females = mean study time for
males
H1: mean study time for females > mean study time for
males
Which hypothesis should be supported?
# of hours spent studying
female counts...
A student set out to see if female students spend more time studying than male students....
A student set out to see if female students spend more
time studying than male students. He randomly surveyed 30 females
and 30 males and asked them how much time they spend studying, on
average, per day. The data is obtained is shown below.
H0: mean study time for females = mean study time for
males
H1: mean study time for females > mean study time for
males
Are there any assumptions that we must make about the
two populations...
A student set out to see if female students spend more time studying than male students....
A student set out to see if female students spend more
time studying than male students. He randomly surveyed 30 females
and 30 males and asked them how much time they spend studying, on
average, per day. The data is obtained is shown below.
H0: mean study time for females = mean study time for
males
H1: mean study time for females > mean study time for
males
What type of test should we use to analyze this data and...
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