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The standard deviation of a normal random variable is 20. If a sample of 225 is selected out of a large population, what is the standard error of the mean? Round to 3 decimal places.
The weight for a group of 18 month-0ld girls are normally distributed with a mean of 24.4 pounds and a standard deviation of 2.6 pounds. Use the table to find the percentage of 18 month-old girls who weigh more than 27.8 pounds.
hypothesis test for one sample meana survey of 50 clientsin january 08 fifty clients of a county mental health mental
a and b flip coins. a starts and continues flipping until a tail occurs at which point b starts flipping and continues
the amounts a soft drink machiene is designed to dispense for each drink are normally distributed with a mean of 12.2
question sadik inc.s bonds currently sell for 1280 and have a par value of 1000. they pay a 135 annual coupon and have
heights of women have a bell-shaped distribution with a mean of 156 cm and a standard deviation of 8cm using the
Jill constructs a test to measure a personality state. The test consists of multiple items which sum up to indicate the degree of the trait that is present.
A retail federation conducted a nationwide survey of 1000 adults last October and found that approximately 55% of the respondents planned to do some type of Halloween decorating.
A company is filling bags of rock salt to a level of 50 pounds. It believes that all bags are filled correctly, but would like to use a hypothesis test with an alpha of 0.05 to check this belief.
A minority representation group accuses a major bank of racial discrimination in its recent hires for financial analysts. Exactly 10% of all applications were from minority members, and exactly 8% of the 900 open positions were filled by members o..
in studies for a medication 13 percent of patients gain weight as a side effect. suppose 514 patients are randomly
question 1 the performances of a group of interns are evaluated by their supervisors at the end of their
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