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Company W is testing a sales software. Their salesforce of 500 people is divided into four regions: Northeast, Southeast, Central and West. Each sales person is expected to sell the same amount of products. During the last 3 months, only half of the sales representatives in each region were given the software program to help them manage their contacts.
The VP of Sales at WidgeCorp, who is comfortable with statistics, wants to know the possible null and alternative hypotheses for a non-parametric test on this data using the chi-square distribution. A non-parametric test is used on data that is qualitative or categorical, such as gender, age group, region, and color. It is used when it doesn't make sense to look at the mean of such variables.
At α = 0.10 test the claim that there is a difference in means of the salaries. (a) State the Hypotheses: (b) Compute the Test statistic: (Round off correctly)
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In a market study for Target, a researcher found that 70% of customers are repeat customers. If 14 customers are selected at random, find the probability of getting.
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A person rolls a pair of six-sided dice, which are equally likely to come up any number from 1 to 6. If the person rolls a seven he gets $0.
At the .05 significance level, is the number of units produced on the afternoon shift larger?
Perform the five-step hypothesis test on the data. - LORA - this is the portion I am responsible for based on using the nonparametric hypothesis testing.
Given that Z is a standard normal random variable. What is the value of Z if the area to the left of Z is 0.9382?
Test the proportions of yellow fire trucks have a significantly lower accident rate.
Using quadratic regression model find the estimated number of planes.
A jar contains 2 black marbles and 8 white marbles. If you randomly pick 2 marbles without replacement, what is the probability that you get one marble of each color?
a) yes, because the tst value -3.46 falls in the noncritical region. b) no, because the test value -1.98 falls in the critical region. c) yes, becasue the test value -3.46 falls in the critical region. d) no because the tst value -1.98 falls in the n..
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