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A state administered standardized reading exam is given to eighth grade students. The scores on this exam for all students statewide have a normal distribution with a mean of 536 and a standard deviation of 42. A local Junior High principal has decided to give an award to any student who scores in the top 10% of statewide scores.
How high should a student score be to win this award?
The following data show samples of three chain stores in three different locations in one town and the amount of dollars spent per customer per visit. At the 0.05 level, is there a difference in among the means?
two airplanes are flying in the same direction in adjacent parallel corridors. at time t 0 the first airplane is 10 km
The percent of persons residing in that county, by age. Use the population distribution to find the expected juror frequencies. Test the researcher's claim at α = 0.01.
find poisson approximations to the probabilities of the following events in 500 indepen- dent trials with probability
Assume you want to repeat the FDA experiment to achieve an estimation of the mean μ of the amount of caffeine content of a cup of coffee.
prediction interval for the regression line.using the age and sick days data from table below find the 98 prediction
A company wants to know if minorities are more likely to be in certain job categories than others. Their data base codes employees 1 for clerical, 2 for custodial, and 3 for manager. A logistic equation was fit to the data with SPSS.
By using the results in (a), construct a boxplot. Indicate clearly on the boxplot the five-number summary. Are the data skewed? If so, describe its skewness.
a piston cylinder compressor is available for evaluation. the device has an initial volume at the beginning of
Test the claim that the mean body mass index (BMI) of men is equal to the mean BMI of women. Use the data to the right to test this claim.
2 cards drawn from a 52 but before the second card is drawn you put the first one back and reshuffle the deck. Are the outcomes on the two cards independent and why?
If an applicant passes the "aptitude test for managers," what is the probability that the applicant will succeed in a management position?
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