Homework Answers
Option c) is correct answer
We are 99% confident taht the population mean of recreational sports value among students lies between 7.3 and 7.7
99% OF SAMPLES OF SIZE 2673 WILL HAVE A MEAN BETWEEN 7.3 AND
7.7
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QUESTION 24 The National Intramural-Recreational Sports Association (NIRSA) performed a study to look at the value...
A survey looked at the value of recreational sports on college campuses. One of the questions...
A survey looked at the value of recreational sports on college campuses. One of the questions asked each student to rate the importance of recreational sports to college satisfaction and success Responses were on a 10-point scale with 1 indicating total lack of importance and 10 indicating very high importance. The following table summarizes these results Class Mean score Freshman Sophomore unior Senior 727 7.6 7.6 7.5 7.3 535 595 435 (a) To compare the mean scores across classes, what...
A survey looked at the value of recreational sports on college campuses. One of the questions...
A survey looked at the value of recreational sports on college campuses. One of the questions asked each student to rate the importance of recreational sports to college satisfaction and success. Responses were on a 10-point scale with 1 indicating total lack of importance and 10 indicating very high importance. The following table summarizes these results: Class Mean score Freshman Sophomore Junior Senior 726 536 595 437 7.6 7.6 7.5 7.3 (a) To compare the mean scores across classes, what...
A survey looked at the value of recreational sports on college campuses. One of the questions...
A survey looked at the value of recreational sports on college campuses. One of the questions asked each student to rate the importance of recreational sports to college satisfaction and success. Responses were on a 10-point scale with 1 indicating total lack of importance and 10 indicating very high importance. The following table summarizes these results: Class n Mean score Freshman Sophomore Junior Senior 722 535 592 438 7.6 7.6 7.5 7.3 (a) To compare the mean scores across classes,...
A survey looked at the value of recreational sports on college campuses. One of the questions...
A survey looked at the value of recreational sports on college campuses. One of the questions asked each student to rate the importance of recreational sports to college satisfaction and success. Responses were on a 10-point scale with 1 indicating total lack of importance and 10 indicating very high importance. The following table summarizes these results: Class n Mean score Freshman Sophomore Junior Senior 722 535 592 438 7.6 7.6 7.5 7.3 (a) To compare the mean scores across classes,...
A survey looked at the value of recreational sports on college campuses. One of the questions...
A survey looked at the value of recreational sports on college campuses. One of the questions asked each student to rate the importance of recreational sports to college satisfaction and success. Responses were on a 10-point scale with 1 indicating total lack of importance and 10 indicating very high importance. The following table summarizes these results: Class n Mean score Freshman Sophomore Junior Senior 726 535 595 438 7.6 7.6 7.5 7.3 (a) To compare the mean scores across classes,...
A survey looked at the value of recreational sports on college campuses. One of the questions...
A survey looked at the value of recreational sports on college campuses. One of the questions asked each student to rate the importance of recreational sports to college satisfaction and success. Responses were on a 10-point scale with 1 indicating total lack of importance and 10 indicating very high importance. The following table summarizes these results: Class n Mean score Freshman Sophomore Junior Senior 723 535 594 439 7.6 7.6 7.5 7.3 (a) To compare the mean scores across classes,...
Answer the following question A random sample of 103 lightning flashes in a certain region resulted...
Answer the following question
A random sample of 103 lightning flashes in a certain region resulted in a sample average radar echo duration of 0.77 sec and a sample standard deviation of 0.36 se Calculate a 99% (two-sided) confidence interval for the true average echo duration p. (Round your answers to two decimal places.) Interpret the resulting interval We are 99% confident that this interval does not contain the true population mean. O We are 99% confident that the true...
Question 9 6 pts Use the given degree of confidence and sample data to construct a...
Question 9 6 pts Use the given degree of confidence and sample data to construct a confidence interval for the population mean p. Assume that the population has a normal distribution. Thirty randomly selected students took the calculus final. If the sample mean was 76 and the standard deviation was 7.7, construct a 99% confidence interval for the mean score of all students. 72.14< < 79.89 73.61 < p < 78.39 72.13 << 79.87 72.54 < p < 79.46
6. Give a correct interpretation of a 99% confidence level of 0.328 <p < 0.486. (1...
6. Give a correct interpretation of a 99% confidence level of 0.328 <p < 0.486. (1 point) We are 99% confident that the interval frorn 0 328 to 0 486 actually does contain the true value of the population mean μ There is a 99% chance that the true value ofμ will fall between 0 328 and 0 486. 99% of sample means fall between 0328 and 0486. We are confident that 99% of values between 0.328 and 0 486...
Question Help Regression was performed on test data for 49 car models to examine the association...
Question Help Regression was performed on test data for 49 car models to examine the association between the weight of the car (in thousands of pounds) and the fuel efficiency (in miles per gallon). Complete parts (a) and (b). Click the icon to view the regression table a) Create a 95% confidence interval for the average fuel efficiency among cars weighing 2600 pounds, and explain what your interval means. The 95% confidence interval is (37.92 3930) (Round to two decimal...
A survey looked at the value of recreational sports on college campuses. One of the questions asked each student to rate the importance of recreational sports to college satisfaction and success Responses were on a 10-point scale with 1 indicating total lack of importance and 10 indicating very high importance. The following table summarizes these results Class Mean score Freshman Sophomore unior Senior 727 7.6 7.6 7.5 7.3 535 595 435 (a) To compare the mean scores across classes, what...
A survey looked at the value of recreational sports on college campuses. One of the questions asked each student to rate the importance of recreational sports to college satisfaction and success. Responses were on a 10-point scale with 1 indicating total lack of importance and 10 indicating very high importance. The following table summarizes these results: Class Mean score Freshman Sophomore Junior Senior 726 536 595 437 7.6 7.6 7.5 7.3 (a) To compare the mean scores across classes, what...
Answer the following question
A random sample of 103 lightning flashes in a certain region resulted in a sample average radar echo duration of 0.77 sec and a sample standard deviation of 0.36 se Calculate a 99% (two-sided) confidence interval for the true average echo duration p. (Round your answers to two decimal places.) Interpret the resulting interval We are 99% confident that this interval does not contain the true population mean. O We are 99% confident that the true...
Question 9 6 pts Use the given degree of confidence and sample data to construct a confidence interval for the population mean p. Assume that the population has a normal distribution. Thirty randomly selected students took the calculus final. If the sample mean was 76 and the standard deviation was 7.7, construct a 99% confidence interval for the mean score of all students. 72.14< < 79.89 73.61 < p < 78.39 72.13 << 79.87 72.54 < p < 79.46
6. Give a correct interpretation of a 99% confidence level of 0.328 <p < 0.486. (1 point) We are 99% confident that the interval frorn 0 328 to 0 486 actually does contain the true value of the population mean μ There is a 99% chance that the true value ofμ will fall between 0 328 and 0 486. 99% of sample means fall between 0328 and 0486. We are confident that 99% of values between 0.328 and 0 486...
Question Help Regression was performed on test data for 49 car models to examine the association between the weight of the car (in thousands of pounds) and the fuel efficiency (in miles per gallon). Complete parts (a) and (b). Click the icon to view the regression table a) Create a 95% confidence interval for the average fuel efficiency among cars weighing 2600 pounds, and explain what your interval means. The 95% confidence interval is (37.92 3930) (Round to two decimal...
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