Business, 06.05.2020 05:34 janiya666

It is known that the standard deviation of the number of people attending all Zoom meetings in March 2020 is 7.1 and that the standard deviation of the number of people attending all face-to-face meetings in March 2020 is 6.5. A simple random sample of 96 Zoom meetings from March 2020 was selected, and the mean number of people attending this sample of 96 meetings was 22.1. An independent simple random sample of 61 face-to-face meetings in March 2020 was selected, and the mean number of people attending this sample of 61 meetings was 19.3.
If appropriate, use this information to calculate and interpret a 95% confidence interval for the difference in the mean number of people attending all Zoom meetings in March 2020 and the mean number of people attending all face-to-face meetings in March 2020.

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