UTRGV female and male students were asked how much time they spent watching TV each week....
UTRGV female and male students were asked how much time they spent watching TV each week. Researchers would like to know if there is a difference between the time males and females spend watching TV. (α = .05)
|
Men |
Women |
|
10 |
13 |
|
15 |
3 |
|
6 |
5 |
|
8 |
7 |
|
20 |
9 |
|
12 |
4 |
a) What is the t-observed for the difference between the means?
b) What is the p-value
c) Based on the p-value and alpha, is there a statistically significant difference between the number of hours males and females watch television?
Homework Answers
TOPIC:Two sample(independent) t-test for the difference between two population means.
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UTRGV female and male students were asked how much time they
spent watching TV each week....
Question 17 4 pts A researcher was interested in comparing the amount of time spent watching...
Question 17 4 pts A researcher was interested in comparing the amount of time spent watching television by women and by men. Independent simple random samples of 14 women and 17 men were selected, and each person was asked how many hours he or she had watched television during the previous week. The summary statistics are shown in the chart below. The following 99% confidence interval was obtained for the difference between the mean amount of time spent watching television...
A researcher was interested in comparing the amount of time spent watching television by women and...
A researcher was interested in comparing the amount of time spent watching television by women and by men. Independent simple random samples of 14 women and 17 men were selected, and each person was asked how many hours he or she had watched television during the previous week. The following 99% confidence interval was obtained for µ1 - µ2 the difference between the mean amount of time spent watching television for women and the mean amount of time spent watching...
11) A researcher was interested in comparing the amount of time spent watching television by women...
11) A researcher was interested in comparing the amount of time spent watching television by women and by men. Independent simple random samples of 14 women and 17 men were selected, and each person was asked how many hours he or she had watched television during the previous week. The summary statistics are as follows. WomenMen x1 = 12.8 hrs x2" 140 his 61 -3.9 hrs 52-5.2 hrs nstruct a 99% confide nce interval for μ1-12, the difference between the...
Watching TV: In 2012, the General Social Survey asked a sample of 1326 people how much...
Watching TV: In 2012, the General Social Survey asked a sample of 1326 people how much time they spent watching TV each day. The mean number of hours was 3.02 with a standard deviation of 2.64. A sociologist claims that people watch a mean of 3 hours of TV per day. Do the data provide sufficient evidence to conclude that the mean hours of TV watched per day differs from the claim? Use the a=0.01 level of significance and the...
Reconsider Dr. Sameer's research question about how much time Cal Poly students spend on watching television....
Reconsider Dr. Sameer's research question about how much time Cal Poly students spend on watching television. Suppose that for the random sample of 100 Cal Poly students the mean number of hours per day spent watching TV turns out to be 3.01 hours, and the standard deviation of the number of hours per day spent watching TV turns out to be 1.97 hours. Is the number 1.97 a parameter or a statistic? Assign an appropriate symbol to this number. Find...
Watching TV: In 2012, the General Social Survey asked a sample of 1330 people how much...
Watching TV: In 2012, the General Social Survey asked a sample of 1330 people how much time they spent watching TV each day. The mean number of hours was 3.05 with a standard deviation of 2.70. A sociologist claims that people watch a mean of 3 hours of TV per day. Do the data provide sufficient evidence to conclude that the mean hours of TV watched per day is more than the claim? Use the a=0.10 level of significance and...
A college student is interested in whether there is a difference between male and female students...
A college student is interested in whether there is a
difference between male and female students in the amount of time
they spend studying each week. The student gathers information from
a random sample of male and female students on campus. The amounts
of time spent studying are normally distributed. The following
includes the data and the questions.
Males Females 27 25 25 9 10 16 22 14. a. What statistical test should be used to analyze these data? b....
Watching TV: The 2012 general Social Survey asked a large number of people how much time...
Watching TV: The 2012 general Social Survey asked a large number of people how much time they spent watching TV each day. The mean number of hours was 3.09 with a standard deviation of 2.72. Assume that in a sample of 34 teenagers, the sample standard deviation of daily TV time is 1.9 hours, and that the population of TV watching times is normally distributed. Can you conclude that the population standard deviation of TV watching times for teenagers differs...
Options are less than or greater than and is and is not Question 10 of 14...
Options are less than or greater than and is and is not
Question 10 of 14 (1.5 points) Attempt 1 of 3 11.5 Section Exercise 9 C Gender differences: A sociologist surveys a sample of college students to determine whether there are differences in the attitudes and behaviors of male and female students. The survey contains 28 questions. For one question, which asks how much time students spend studying each week, the difference between males and females is statistically significant...
A sample of 200 high school students were asked how many hours per week they spend...
A sample of 200 high school students were asked how many hours per week they spend watching television. The following frequency distribution presents the results. Time Spent Watching Television Number of hours Frequency 0.0-3.9 38 4.0.7.9 38 8.0-11.9 34 12.0-15,9 23 16.0-19.9 24 20.0-23.9 23 24.0-27.9 20
Question 17 4 pts A researcher was interested in comparing the amount of time spent watching television by women and by men. Independent simple random samples of 14 women and 17 men were selected, and each person was asked how many hours he or she had watched television during the previous week. The summary statistics are shown in the chart below. The following 99% confidence interval was obtained for the difference between the mean amount of time spent watching television...
11) A researcher was interested in comparing the amount of time spent watching television by women and by men. Independent simple random samples of 14 women and 17 men were selected, and each person was asked how many hours he or she had watched television during the previous week. The summary statistics are as follows. WomenMen x1 = 12.8 hrs x2" 140 his 61 -3.9 hrs 52-5.2 hrs nstruct a 99% confide nce interval for μ1-12, the difference between the...
Watching TV: In 2012, the General Social Survey asked a sample of 1326 people how much time they spent watching TV each day. The mean number of hours was 3.02 with a standard deviation of 2.64. A sociologist claims that people watch a mean of 3 hours of TV per day. Do the data provide sufficient evidence to conclude that the mean hours of TV watched per day differs from the claim? Use the a=0.01 level of significance and the...
Watching TV: In 2012, the General Social Survey asked a sample of 1330 people how much time they spent watching TV each day. The mean number of hours was 3.05 with a standard deviation of 2.70. A sociologist claims that people watch a mean of 3 hours of TV per day. Do the data provide sufficient evidence to conclude that the mean hours of TV watched per day is more than the claim? Use the a=0.10 level of significance and...
A college student is interested in whether there is a
difference between male and female students in the amount of time
they spend studying each week. The student gathers information from
a random sample of male and female students on campus. The amounts
of time spent studying are normally distributed. The following
includes the data and the questions.
Males Females 27 25 25 9 10 16 22 14. a. What statistical test should be used to analyze these data? b....
Watching TV: The 2012 general Social Survey asked a large number of people how much time they spent watching TV each day. The mean number of hours was 3.09 with a standard deviation of 2.72. Assume that in a sample of 34 teenagers, the sample standard deviation of daily TV time is 1.9 hours, and that the population of TV watching times is normally distributed. Can you conclude that the population standard deviation of TV watching times for teenagers differs...
Options are less than or greater than and is and is not
Question 10 of 14 (1.5 points) Attempt 1 of 3 11.5 Section Exercise 9 C Gender differences: A sociologist surveys a sample of college students to determine whether there are differences in the attitudes and behaviors of male and female students. The survey contains 28 questions. For one question, which asks how much time students spend studying each week, the difference between males and females is statistically significant...
A sample of 200 high school students were asked how many hours per week they spend watching television. The following frequency distribution presents the results. Time Spent Watching Television Number of hours Frequency 0.0-3.9 38 4.0.7.9 38 8.0-11.9 34 12.0-15,9 23 16.0-19.9 24 20.0-23.9 23 24.0-27.9 20
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