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Compute a chi-square test for goodness of fit for each of the following, using the .05 level for each. In each problem, the expected distribution is equal frequencies in each category. NEEDED: X2(df = 3 - 1 = 2, p < .05 = 5.992
a. 5 10 5b. 10 15 10c. 10 20 10d. 5 15 5
A fast-food restaurant sells hamburgers and chicken sandwiches. On a typical weekday, the demand for hamburgers is normally distributed with a mean 313 and a standard deviation 57; the demand for chicken sandwiches is normally distributed with a m..
A particular candidate claims she has the support of at least 60% of the voters in her district. A random sample of 150 voters yields 87 who support her.
Determine and record how much of the math grade can be explained by the PE grade? How much of the Writing grade can be explained by the Reading grade?
The random variables X and Y each take values -1 and 1, and p(X=1)=a, P(Y=1)=b. Suppose Z=XY and that X, Y and Z are pairwise independent. What are the values of a and b? are {X,Y,Z} independent?
Kolzak Appliance has just received a shipment of 10 TV sets. Shortly after they were received, the manufacturer called to report that he had inadvertently shipped 3 defective sets.
Calculate the safety stock for PVBs for each quarter. (σQ1 = 1877, σQ2 = 3361, σQ3 = 3851, σQ1 = 1877 and σQ4 = 8154). Assume the formula SS = z σtL1/2. Create a APP that minimises costs.
A certain type of tomato seed germinates 90% of the time. A backyard farmer planted 25 seeds. What is the probability that exactly 20 germinate?
Electronic teller machine during the prime shopping hours in a department store. What is the probability that Exactly six people will use the machine during a randomly selected hour.
Which measure of central tendency would you use to summarize the data below? Which inferential test would you use to determine if there is a difference in rainfall between the sample 2 and 3?
What signified to you on all of the problems that required a binomial distribution that you were to use a binomial distribution? Which problems required a binomial distribution?
Using a level of significance of .05, is there evidence that the dual degree students are receiving lower grades? Explain.
What are some typical applications of the Binomial and the Poisson probability distribution? Explain with examples. When is the Hypergeometric distribution used?
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