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The annual commissions per salesperson employed by a retailer of mobile communication devices averaged $40,000, with a standard deviation of $5,000. What percent of the salespersons earn between $32,000 and $42,000?
The probability that a male will be color blind is 0.042. Use the normal curve approximation to the binomial distribution to find the probabilities that in a group of 53 men, no more than 6 are color-blind.
A certain brand of automobile tire has a mean span of 3500 miles and a standard deviation of 2000 miles. (assume the life spans of the tires have a bell-shaped distribution)
Using the confidence interval when conducting a two-tail test for the population mean we do not reject the null hypothesis if the hypothesized value for:
How many students must be randomly selected to estimate the mean weekly earnings of students at one college?
She figures that each box costs $ 2.59 plus $ 0.21 shipping and handling, which totals $ 2.80, then she adds $ 0.70 profit to each box and sells it for $ 3.50. Do you think this is a good pricing strategy? How would it compare to marking up by a p..
use Microsoft excel, as your graphing calculator, or the binomial probability formula to calculate the probibilities of the following events. Event A: The probability that you will have to oay out exactly $20.
please propose a study and write a description of the study below is a tentative guideline for the paper.a. write
The assembly time for a product is uniformly distributed between 6 to 10 minutes.
What is the value of the slope of the least squares regression line for these data? Round your answer to at least four decimal places.
In a study comparing individual performance with group performance, Laughlin, Zander, Knievel, and Tan found that groups consistently outperformed the best of the individuals.
If the population standard deviation is σ = 20 is the 6 point effect large enough to be statistically significant? Use the two - tailed test with α = .05
Formulate an 84% interval estimate for the true proportion of employees within one year of retirement in the entire corporation.
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