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Suppose you measure the blood pressure of 100 hypertensive people and find that they have a mean systolic blood pressure of 133 mm Hg with a variance of 9 mm Hg. You later discover that your blood pressure monitor was calibrated incorrectly. To adjust for this mistake, you add 5 mm Hg to each person's systolic blood pressure. What is the standard deviation of the new data shifted by 5 mmHg?
Describe the distribution of sample means (shape, expected value, and standard error) for samples of n=36 selected from a population with a mean of µ=100 and a standard deviation of σ=12.
The famous Y.S Chang Restaurant is open 24 hours a day. Waiters and busboys report for duty at 3 am, 7 am, 11am, 3pm, 7pm or 11pm, and each works an 8-hour shift. The following table shows the minimum number of worker needed during the six periods..
a. What is the probability that he had less than two routine physical exams during the last 5 years?
it is known that the population standard deviation of weight among females is 15. assuming that we have a random sample
a genetic experiment involving peas yielded one sample of offspring consisting of 414 green peas and 153 yellow peas.
the mean age at which men in the united states marry for the first time follows the normal distribution with a mean of
a contractor is considering a sale that promises a profit of 20000 with a probability of 0.7 or loss of 7000 with a
suppose the probability is 0.8 that any given person will believe a tale about the transgressions of a famous actress.
Of the registered voters contacted, 33% are registered Democrats. Is each of the boldface numbers a parameter or a statistic?
A filling machine in a brewery is designed to fill bottles with 355 ml of hard cider. In practice, however, volumes vary slightly from bottle to bottle. In a sample of 49 bottles, the mean volume of cider is found to be 354 ml, with a standard dev..
the management of red cat computers was considering launching a new product called the tiger 100. the problem was that
question 1 the temperature in january is estimated to have a mean of 34 and a standard deviation of 6 in degrees
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