Mathematics, 08.11.2019 07:31 acostasilvana1osw8tk
Based on records kept at a gas station, the distribution of gallons of gas purchased by customers is skewed to the right with mean 10 gallons and standard deviation 4 gallons. a random sample of 64 customer receipts was selected, and the sample mean number of gallons was recorded. suppose the process of selecting a random sample of 64 receipts and recording the sample mean number of gallons was repeated for a total of 100 samples. which of the following is the best description of a dotplot created from the 100 sample means? (a)the dotplot is skewed to the right with mean 10 gallons and standard deviation 4 gallons. (b) the dotplot is skewed to the right with mean 10 gallons and standard deviation 0.5 gallon. (c) the dotplot is skewed to the right with mean 10 gallons and standard deviation 0.4 gallon. (d) the dotplot is approximately normal with mean 10 gallons and standard deviation 0.5 gallon (e) the dotplot is approximately normal with mean 10 gallons and standard deviation 0.4 gallon.
Answers: 3
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Someone answer asap for ! max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a. the median of max’s data is 250 b. more than half of the data points max recorded were 177 centimeters. c. a data point chosen at random is as likely to be above the mean as it is to be below the mean. d. every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.
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Based on records kept at a gas station, the distribution of gallons of gas purchased by customers is...
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