Mathematics, 05.05.2020 05:33 nida7864
When engaging in weight control (fitness/fat burning) types of exercise, a person is expected to attain about 60% of their maximum heart rate. For 20-year-olds, this rates is approximately 120 bpm. A simple random sample of 100 20-year-olds was taken, and the sample mean was found to be 107 bpm with a standard deviation of 45 bpm. Researchers wonder if this is evidence to conclude that the expected level is actually lower than 120 bpm. To determine this, we test the following hypothesis:
H0 : ? = 120, Ha : ? < 120
Reference: Ref 17-2
A 95% confidence interval for the population mean weight control heart rate, ?, of 20-year-olds is
Answers: 2
Mathematics, 21.06.2019 19:30, jrassicworld4ever
Need now 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
Mathematics, 21.06.2019 23:00, slonekaitlyn01
Shared decision making is always a positive strategy to take
Answers: 1
When engaging in weight control (fitness/fat burning) types of exercise, a person is expected to att...
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