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QUESTION 2 Previously, an organization reported that teenagers spent 4.5 hours per week, on average, on...
Previously, an organization reported that teenagers spent 4.5 hours per week, onaverage, on the phone. The organization thinks that, currently, the mean isgreater than 4.5. Ten randomly chosen teenagers were asked how many hoursper week they spend on the phone. The level of significance is 0.05. The sample of teenagers’ time is: 3.0, 4.25, 5.5, 3.5, 7.0, 6.3, 2.0, 4.5, 3.7, 3.6, 7.2, 7.9 Population mean: Sample mean: Sample standard of deviation: Level of significance: Sample size: null hypothesis (Ho):...
Previously, an organization reported that teenagers spent 4.5 hours per week, onaverage, on the phone. The organization thinks that, currently, the mean is 4.5.Ten randomly chosen teenagers were asked how many hours per week theyspend on the phone. The level of significance is 0.05. The sample of teenagers’ time is: 3.0, 4.25, 5.5, 3.5, 7.0, 6.3, 2.0, 4.5, 3.7, 3.6 Population mean: Sample mean: Sample standard deviation: Level of significance: Sample size: Alternative hypothesis: (Ha) Test statistics: P-value: What is...
A past study claimed that adults in America spent an average of 18 hours a week on leisure activities. A researcher wanted to test this claim. She took a sample of 10 adults and asked them about the time they spend per week on leisure activities. Their responses (in hours) are as follows. 11.1 12.7 20.8 20.9 23.3 33.9 17 17.9 20.2 21.2 Assume that the times spent on leisure activities by all adults are normally distributed. Using the 5%...
Each person in a random sample of 224 male teenagers and a random sample of 303 female teenagers was asked how many hours he or she spent online in a typical week. The sample mean and standard deviation were 15.2 hours and 11.3 hours for males and 14.3 and 11.7 for females. (Use a statistical computer package to calculate the P-value. Use μmales − μfemales. Round your test statistic to two decimal places, your df down to the nearest whole...
Each person in a random sample of 224 male teenagers and a random sample of 303 female teenagers was asked how many hours he or she spent online in a typical week. The sample mean and standard deviation were 15.2 hours and 11.3 hours for males and 14.3 and 11.7 for females. (Use a statistical computer package to calculate the P-value. Use μmales − μfemales. Round your test statistic to two decimal places, your df down to the nearest whole...
A past study claimed that adults in America spent an average of 18 hours a week on leisure activities. A researcher wanted to test this claim. She took a sample of 10 adults and asked them about the time they spend per week on leisure activities. Their responses (in hours) are as follows. 12.0 13.3 22.6 22.9 22.5 33.1 16 17.2 20.1 20.3 Assume that the times spent on leisure activities by all adults are normally distributed. Using the 5%...
. A university says the mean number of classroom hours per week for full-time faculty is 11.0. A random sample of the number of classroom hours for full-time faculty for one week is listed below. You work for a student organization and are asked to test this claim. At = 0.01, do you have enough evidence to reject the university’s claim? 11.8 8.6 12.6 7.9 6.4 10.4 13.6 9.1 a. State the null and alternative hypotheses. b. Find the test...
Q: Previous study conducted at the Texas State University reported that first year college students spent 5 hours per week, on average, speaking phone. The students statistics club assumes that, currently, the mean is higher. 125 randomly chosen first-year college students were asked how many hours per week they spend talking by phone. The sample mean was 5.94 hours with a sample standard deviation of 6.37 hours. a. What is the population parameter to test? b. What is the sample...
(20 pts)4. A university says the mean number of classroom hours per week for full-time faculty is 11.0. A random sample of the number of classroom hours for full-time faculty for one week is listed below. You work for a student organization and are asked to test this claim. At = 0.01, do you have enough evidence to reject the university's claim? 11.8 8.6 12.6 7.9 6.4 10.4 13.6 9.1 a. State the null and alternative hypotheses. b. Find the...
In a survey of 28 teenagers who were asked how many hours per week they spend watching T.V., the sample mean was 13 hours and the population standard deviation is 5.8 hours. Find a 99% Confidence Interval for the population mean number of hours teenagers watch T.V. Write the interval below. Write a sentence interpreting this. (Round answer to 2 decimal places)