
"1. There is a garbage crisis in North America too much garbage and no place to put it. As a consequence, the idea of recycling has become quite popular. A wastemanagement company in a large city is willing to begin recycling newspapers, aluminum cans, and plastic containers....

what is the probability of randomly selecting an exective who is loyal to the company (would remian) and who has more than 10 years of service?

LEt x bar be the mean of a random sample of size n=48 from the uniform distribution on the interval (0,2); that is, f(x) =1/2 for 0<x<2. Approximate the probability P(0.9<Xbar<1.1).  can you please write the formulas you use as you go. thank you

I've performed a regression analysis and plotted a graph on wages and age relationship in the attached Excel document (2 tabs). I need to perform a hypothesis test so can you tell me which test is best to use for this data? Also, can you suggest a hypothesis statement and equation for this?

Commuting times for employees of a local company have a mean of 63.6 minutes and a standard deviation of 2.5 minutes. What does Chebyshev's Theorem say about the percentage of employees with commuting times between 58.6 minutes and 68.6 minutes?

(1110) Statistics course question.

(1112) Statistics course question.

A discrete random variable can have the values x=3, x=8, x10 and the respective probabilities are 0.2, 0.7, and 0.1. Determine the mean, variance, and standard deviation of x.

According to the National Marine Manufacturers Association, 50.0% of the population of Vermont were boating participants during the most recent year. For a randomly selected sample of 20 Vermont residents, with the discrete random variable the number in the sample who were boating...

It has been estimated that one in five Americans suffers from allergies. The president of Hargrove University plans to randomly select 10 students from the undergraduate population of 1400 to attend a dinner at his home. Assuming that Hargrove students are typical in terms of susceptibility to...
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 1. A school administrator wonders if students whose first language is not English score differently on the math portion of the sat exam than students whose first language is English. The mean SAT math score of students whose first language is english is 516 on the basis of data obtained from the college board. A simple random sample of 20 students whose first language is not English result in a sample mean SAT math score of 522. SAT math score are normally distributed with a population standard deviation of 114. Why is it necessary for SAT math scores to be normally distributed to test the hypothesis?
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