Question

Suppose the first population is all face-to-face meetings held in March 2020, the second population is...

Suppose the first population is all face-to-face meetings held in March 2020, the second population is all Zoom meetings held in March 2020, and the parameter of interest is μ1 – μ2 = the difference in the mean length of all face-to-face meetings and the mean length of all Zoom meetings. The meeting lengths are measured in minutes. For both face-to-face meetings and Zoom meetings the distributions of meeting times are skewed heavily to the right due to some meetings that are very long.

(a). Of interest is to test the hypothesis that the mean length of all face-to-face meetings and the mean length of all Zoom meetings are the same, versus the alternative hypothesis that the mean length of all face-to-face meetings is less than the mean length of all Zoom meetings. State the appropriate null and alternative hypotheses that should be tested.

(b). A simple random sample of 83 face-to-face meetings held in March 2020 was selected, and the mean length of this sample of 83 meetings was 46 minutes with a standard deviation of 13.6 minutes. An independent simple random sample of 81 Zoom meetings held in March 2020 was selected, and the mean length of this sample of 81 meetings was 51 minutes with a standard deviation of 11.6 minutes. If appropriate, use this information to test the hypotheses stated in part (a) at the alpha = .10 level of significance.

Homework Answers

Answer #1

Dear student,
I am waiting for your feedback. I have given my 100% to solve your queries. If you are satisfied by my given answer. Can you please like it☺

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Suppose the first population is all face-to-face meetings held in March 2020, the second population is...
Suppose the first population is all face-to-face meetings held in March 2020, the second population is all Zoom meetings held in March 2020, and the parameter of interest is μ1 – μ2 = the difference in the mean length of all face-to-face meetings and the mean length of all Zoom meetings. The meeting lengths are measured in minutes. For both face-to-face meetings and Zoom meetings the distributions of meeting times are skewed heavily to the right due to some meetings...
Suppose the first population is all face-to-face meetings held in March 2020, the second population is...
Suppose the first population is all face-to-face meetings held in March 2020, the second population is all Zoom meetings held in March 2020, and the parameter of interest is μ1 – μ2 = the difference in the mean length of all face-to-face meetings and the mean length of all Zoom meetings. The meeting lengths are measured in minutes. For both face-to-face meetings and Zoom meetings the distributions of meeting times are skewed heavily to the right due to some meetings...
One significant consequence of the COVID-19 situation is that many meetings that formerly were held face-to-face...
One significant consequence of the COVID-19 situation is that many meetings that formerly were held face-to-face are now held virtually using something like Zoom or Skype. Suppose the first population is all face-to-face meetings held in March 2020, the second population is all Zoom meetings held in March 2020, and the parameter of interest is μ1 – μ2 = the difference in the mean length of all face-to-face meetings and the mean length of all Zoom meetings. The meeting lengths...
Suppose the first population is all Zoom meetings held in March 2020, the second population is...
Suppose the first population is all Zoom meetings held in March 2020, the second population is all face-to-face meetings held in March 2020, and the parameter of interest is μ1 – μ2 = the difference in the mean number of people attending all Zoom meetings and the mean number of people attending all face-to-face meetings. For both Zoom meetings and face-to-face meetings the distributions are skewed heavily to the right due to some meetings that have many people in attendance....
(a)The population is all VCU faculty, and of interest is to compare the mean number of...
(a)The population is all VCU faculty, and of interest is to compare the mean number of Zoom meetings they attended in March 2020 to the mean number of face-to-face meetings they attended in March 2020. It is conjectured that the mean number of Zoom meetings in March 2020 and the mean number of face-to-face meetings in March 2020 attended by all VCU faculty are the same, and of interest is to test this conjecture versus the alternative that the two...
A.) Now the population is all senior living facilities in the United States. It is conjectured...
A.) Now the population is all senior living facilities in the United States. It is conjectured that the mean number of positive COVID-19 cases per 100 residents is 40, and of interest is to test the conjecture versus the alternative that the mean number of positive COVID-19 cases per 100 residents is different from 40. State the appropriate null and alternative hypotheses that should be tested. B.) Consider the information and hypotheses specified in the above part a.. A simple...
(a). The population is still all days that Parsnip has been alive, and the parameter of...
(a). The population is still all days that Parsnip has been alive, and the parameter of interest is  = the proportion of all days in which Parsnip eats all the food he is given. It is conjectured that the proportion of all days that he has been alive that Parsnip eats all the food he is given is 0.75, and of interest is to test this claim versus the alternative that the proportion of all days in which Parsnip eats all...
Assume that a simple random sample has been selected from a normally distributed population and test...
Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Identify the null and alternative​ hypotheses, test​ statistic, P-value, and state the final conclusion that addresses the original claim. In a manual on how to have a number one​ song, it is stated that a song must be no longer than 210seconds. A simple random sample of 40current hit songs results in a mean length of 237.6sec and a standard deviation...
Assume that a simple random sample has been selected from a normally distributed population and test...
Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Use either the traditional method or P-value method as indicated. Identify the null and alternative hypotheses, test statistic, critical value(s) or P-value (or range of P-values) as appropriate, and state the final conclusion that addresses the original claim. A public bus company official claims that the mean waiting time for bus number 14 during peak hours is less than 10 minutes....
Assume that a simple random sample has been selected from a normally distributed population and test...
Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Identify the null and alternative​ hypotheses, test​ statistic, P-value, and state the final conclusion that addresses the original claim. In a manual on how to have a number one​ song, it is stated that a song must be no longer than 210 seconds. A simple random sample of 40 current hit songs results in a mean length of 233.6 sec and...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT