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A company with a fleet of 150 cars found that the emissions systems of 7 out of the 22 they tested failed to meet pollution control guidelines. Is this strong evidence that more than 20% of the fleet might be out of compliance?
Test an appropriate hypothesis and state your conclusion. Be sure the appropriate assumptions and conditions are satisfied before you proceed.
an artist sells her works at the east lansing art festival. suppose that 5 of those who stop by her booth will buy a
Choo Choo Paper Company makes various paper products. One of their products is a 30 mils thick paper. In order to ensure that the thickness of the paper meets the 30 mils specification
suppose that you measure the heights of 20 high school sophomore males. the sample mean is 66.2 inches. suppose that
To evaluate average annual expenses of students on books and class materials sample size 36 is taken.
the move-it company has two plants building forklift trucks that then are shipped to three distribution centers
a trucking firm delivers appliances for a large retail operation. the packages or crates have a mean weight of 291 lb.
At.05 level of significance, is there evidence to propose that mean life length of the batteries manufactured by this manufacturer is more than 400 hours?
in a large lecture class the professor announced that the range of scores on a recent exam was normally distributed
Ms. Amber Dextrous played a computer game that required her. The rest is attached because it has a picture
If a transit employee provides a strand of hair for drug testing, state the null and alternative hypotheses in verbal terms, then identify what would constitute a Type I error and a Type II error in this situation.
A standard 6-sided die is weighted so that the probabilities of rolling 2,3,4,5 or 6 are equal and the probability of rolling 1 is three times the probability of rolling 2. If the die is thrown twice, what is the probability that the sum of the nu..
Evaluate percentage of households in town with one or more cars; attach standard error to be evaluate. If this is no possible, describe why not.
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