Mathematics, 18.10.2019 21:30 kateykob01
Acertain group of test subjects had pulse rates with a mean of 83.683.6 beats per minute and a standard deviation of 10.310.3 beats per minute. use the range rule of thumb to identify the limits separating values that are significantly low or significantly high. is a pulse rate of 134.2134.2 beats per minute significantly low or significantly high? (a) significantly high comma because it is greater than two standard deviations above the mean. significantly high, because it is greater than two standard deviations above the mean.(b) significantly low comma because it is less than two standard deviations below the mean. significantly low, because it is less than two standard deviations below the mean.(c) neither comma because it is within two standard deviations of the mean. neither, because it is within two standard deviations of the mean.(d) it is impossible to determine with the information given.
Answers: 2
Mathematics, 21.06.2019 21:40
In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.
Answers: 3
Mathematics, 21.06.2019 22:10
Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.
Answers: 2
Acertain group of test subjects had pulse rates with a mean of 83.683.6 beats per minute and a stand...
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