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Ten equally qualified marketing assistants are candidates for promotion to associate buyer; seven are men and three are women. If the company intends to promote four of the ten at random, what is the probability that exactly three are women?
comparing averages. suppose the national basketball association nba reports that the average height of basketball
A random sample of 9 homes was selected in the neighborhood. What's an estimate of the average price of the houses in the sample?
Is the GPA of this year's students significantly different from the long-run average? At what alpha level would it be significant?
a clinical trial is conducted comparing a new pain reliever for arthritis to a placebo. participants are randomly
An owner of a fast food restaurant reported to corporate headquarters that the average bill paid by his customers in the last quarter was $6.20 and that the standard deviation was $1.90.
the management of a department store is interested to estimate the difference in the amount of money spent by female
There are 25 students in a probability class. Assume that there are 365 days in each year, and that the birthrate is constant throughout the year.
Suppose you went to the Bureau of Labor Statistics web site and found several predictors of your salary. State three possible predictors and a simulated multilinear regression equation along with their p-values. What does your p-values tell you ab..
What is the probability that more than 585 of this year's entering class of 1807 will drop out during or at the end of their first year?
You sample a group of computers and use the sample statistics to calculate a 95% confidence interval of (-10.95, -1.5). This interval estimates the difference of (average boot time (HDD) - average boot time (SSD)). What can we conclude from this i..
a survey of 25 randomly selected customers found the ages shown in years. 28 36 40 26 33 24 11 47 23 33 46 38 35 14 33
the average number of mosquitos in a stagnant pool per square meter with a standard deviation of 8. if a sample of 25
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