Mathematics, 12.10.2019 15:30 texdee43
In a random sample of 20 people, the mean commute time to work was 33.5 minutes and the standard deviation was
7.2 minutes. assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval for the population mean
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Mathematics, 21.06.2019 16:30
The table above shows approximate conversions from gallons to liters. what is the value of x?
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The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?
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Mathematics, 21.06.2019 19:30
Cor d? ? me ? 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.
Answers: 1
In a random sample of 20 people, the mean commute time to work was 33.5 minutes and the standard dev...
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