According to a survey it takes .7 second to download the home page website. Suppose the...
According to a survey it takes .7 second to download the home page website. Suppose the download time was normally distributed, with a standard deviation of .2 second. If you select a random sample of 23 download times, what is the probability that the sample mean is between .73 and .84 second?
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According to a survey it takes .7 second to download the home
page website. Suppose the...
A} According to a survey, it takes .7 second to download the home page website. Suppose...
A} According to a survey, it takes .7 second to download the home page website. Suppose that the download time was normally distributed with a standard deviation of .2 seconds. If you select a random sample of 23 download times, the probability is 89% that the sample mean is less than what value?
A) According to a survey it takes .7 second to download the home page website. Suppose...
A) According to a survey it takes .7 second to download the home page website. Suppose that the download was normally distributed with a standard deviation of .2. If you select a random sample of 23 download times, the probability is 85% that the sample mean is between what two values symmetrically distributed around the population mean? Lower Bound: Upper Bound:
According to a social media blog, time spent on a certain social networking website has a...
According to a social media blog, time spent on a certain social networking website has a mean of 24 minutes per visit. Assume that time spent on the social networking site per visit is normally distributed and that the standard deviation is 7 minutes. If you select a random sample of 36 sessions, what is the probability that the sample mean is between 23.5 and 24.5 minutes?
According to a social media blog, time spent on a certain social networking website has a...
According to a social media blog, time spent on a certain social networking website has a mean of 16 minutes per visit. Assume that time spent on the social networking site per visit is normally distributed and that the standard deviation is 5 minutes. If you select a random sample of 144 sessions, what is the probability that the sample mean is between 15.5 and 16.5 minutes?
According to a social media blog, time spent on a certain social networking website has a...
According to a social media blog, time spent on a certain social networking website has a mean of 20 minutes per visit. Assume that time spent on the social networking site per visit is normally distributed and that the standard deviation is 7 minutes. Complete parts (a) through (d) below. a. If you select a random sample of 25 sessions, what is the probability that the sample mean is between 19.5 and 20.5 minutes? (Round to three decimal places as...
According to a social media blog, time spent on a certain social networking website has a...
According to a social media blog, time spent on a certain social networking website has a mean of 22 minutes per visit. Assume that time spent on the social networking site per visit is normally distributed and that the standard deviation is 55 minutes. Complete parts (a) through (d) below. a. If you select a random sample of 16 sessions, what is the probability that the sample mean is between 21.5 and 22.5 minutes?
According to a social media blog, time spent on a certain social networking website has a...
According to a social media blog, time spent on a certain social networking website has a mean of 19 minutes per visit. Assume that time spent on the social networking site per visit is normally distributed and that the standard deviation is 7 minutes. Complete parts (a) through (d) below a. If you select a random sample of 36 sessions, what is the probability that the sample mean is between 18.5 and 19.5 minutes? (Round to three decimal places as...
Download Page > of 10 ZOOM 2 2. According to the American Time Use Survey, the...
Download Page > of 10 ZOOM 2 2. According to the American Time Use Survey, the typical American spends 154.8 minutes per day watching television. A survey of 50 internet users results in a mean time watching television per day of 128.7 minutes with a standard deviation of 46.5 minutes. Test whether the internet users spend less time watching television at 1% level of significance.
Assume that the download times for a two-hour movie are uniformly distributed between 16 and 23...
Assume that the download times for a two-hour movie are uniformly distributed between 16 and 23 minutes. Find the following probabilities a. What is the probability that the download time will be less than 17 minutes? b. What is the probability that the download time will be more than 22 minutes? c. What is the probability that the download time will be between 18 and 20 minutes? d. What are the mean and standard deviation of the download times?
Assume that the download times for a two-hour movie are uniformly distributed between 15 and 24...
Assume that the download times for a two-hour movie are uniformly distributed between 15 and 24 minutes. Find the following probabilities. a. What is the probability that the download time will be less than 16 minutes? b. What is the probability that the download time will be more than 23 minutes? c. What is the probability that the download time will be between 17 and 22 minutes? d. What are the mean and standard deviation of the download times? a....
According to a social media blog, time spent on a certain social networking website has a mean of 20 minutes per visit. Assume that time spent on the social networking site per visit is normally distributed and that the standard deviation is 7 minutes. Complete parts (a) through (d) below. a. If you select a random sample of 25 sessions, what is the probability that the sample mean is between 19.5 and 20.5 minutes? (Round to three decimal places as...
According to a social media blog, time spent on a certain social networking website has a mean of 19 minutes per visit. Assume that time spent on the social networking site per visit is normally distributed and that the standard deviation is 7 minutes. Complete parts (a) through (d) below a. If you select a random sample of 36 sessions, what is the probability that the sample mean is between 18.5 and 19.5 minutes? (Round to three decimal places as...
Download Page > of 10 ZOOM 2 2. According to the American Time Use Survey, the typical American spends 154.8 minutes per day watching television. A survey of 50 internet users results in a mean time watching television per day of 128.7 minutes with a standard deviation of 46.5 minutes. Test whether the internet users spend less time watching television at 1% level of significance.
Assume that the download times for a two-hour movie are uniformly distributed between 15 and 24 minutes. Find the following probabilities. a. What is the probability that the download time will be less than 16 minutes? b. What is the probability that the download time will be more than 23 minutes? c. What is the probability that the download time will be between 17 and 22 minutes? d. What are the mean and standard deviation of the download times? a....
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