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Each employee of a certain company is in either Department X or Department Y, and there are more than twice as many employees in Department X as in Department Y. The average (arithmetic mean) salary is $25,000 for the employees in Department X and $35,000 for the employees in Department Y. Which of the following amounts could be the average salary for all of the employees of the company?
Indicate all such amounts.
Describe the shape of the histogram. The probability that there are five first-shift workers. The probability that there are four second-shift workers.
two groups were polled about thier attitudes towards capital punishment. In one group 30 out of 100 favored capital punishment, and in the other group 40 out of 80 favored capital punishment. Calculate an appropriate test value to test the hypothe..
A pendulum swings through an angle of 20 degrees each second.If the pendulum is 40 inches long, how fast is the tip of the pendulum swinging?
prove that if f is differentiable at a and fa 6 0 then f is also differentiable at a. give an example to show why the
Consider a large clothing shop in Sydney. Suppose it is known that the number of business suits sold per day is normally distributed with a mean, μ = 23 and standard deviation, σ = 10. What is the probability that Mr Wood's average daily sales wil..
For each exercise, specify whether it involves an arithmetic sequence or a geometric sequence and use the proper formulas where applicable.
Prepare a frequency distribution table and histogram on the following sample data
1. in a 3m privacy filters poll 806 adults were asked to identify their favorite seats when they fly and 492 of them
The resale value of a certain industrial machine decreases at a rate that depends on its age. When the machine is t years old, the rate at which its value is changing is -960e^-t/5 dollars per year.
A 4 ft high and 7 ft width rectangular plate is submerged vertically in water so that the top is 1 ft below the surface. Express the hydrostatic force against one side of the plate as an integral and evaluate it.
Conduct the appropriate test at the a = 0.05 level of significance
Find the predictive value of a positive test.
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