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In a sample of 59 business trips taken by employees in the HR department, a company finds that the average amount spent for the trips was $1,495 with a standard deviation of $458. In a sample of 87 trips taken by the employees in the sales department is $1,656 with astandard deviation of $642. When testing the hypothesis (at the 5% level of significance)that the variance of the amount spent on trips is significantly larger in one department thanthe other, what is the test statistic? (please round your answer to 2 decimal places)
A week was randomly chosen and the number of customers each day was counted. The results were: Monday-31, Tuesday-18, Wednesday-36, Thursday-23, Friday-47, Saturday-60. Use this sample to test the expected distribution using α = 0.05.
a die is rolled twice. let x denote the sum of the two numbers that turn up and y the difference of the numbers
What impact would a mandated change control process have on the project scope, scope creep and the final project product? Need a minimum of 200 words.
there are 17 broken lightbulbs in a box of 100 lightbulbs. a random sample of 3 lightbulbs is chosen without
Design a contingency table that will hold your data. What are your degrees of freedom and critical value at a 0.05 confidence level? You do not need data to answer this.
data to test the difference between two weighing methods for wheat deliveries gave a mean difference of 10 kg with a
Copier C1 has been observed to serve on an average 40 customers per hour during the peak periods when it is never idle; the service time of this copier is exponentially distributed.
Lotteries. In a state lottery, there are 15 finalists eligible for the Big Money Draw. In how many ways can the first, second, and third prizes be awarded if no ticket holder can win more than one prize?
on average 9 babies are born per 24-hour day at a hospital in indianapolis.a what is the probability that at least one
question consider the random variable x.prove that vx ex2 - e2 x v x is the variance of
Imagine you are a manager at a major bottling company. Customers have begun to complain that the bottles of the brand of soda produced in your company contain less than the advertised sixteen (16) ounces of product.
suppose x the number of flaws in a roll of polyethylene insulated cable follows a poisson process where ? is 1.1 flaws
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