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Bingo Hamburger Co has a chain of 12 stores in a large city. Sales figures and profits for the stores are given in the following table. Obtain a regression line for the data & predict profit for a store assuming sales of $10 million.
X Y
SALES PROFITS
$7 $.15
2 .10
6 .13
4 .15
14 .25
15 .27
16 .24
12 .20
14 .27
20 .44
15 .34
7 .17
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The sample size n , the sample means, and the sample standard deviations for the two groups are given below.
Find out optimal assignment and calculate total minimum cost.
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Suppose that data is recorded for equal period of "before"-"after" time. Use 1% level for risk. Given processed data, explain what John must do.
Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?
The life of a calculator manufactured by Intel corporation has a normal distribution with a mean of 50 months and a standard deviation of one year.
The standard deviation of the differences d for the paired sample data s d = ____________
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A professor of math refutes the claim that the average student spends 3 hours studying for the midterm exam. Which hypothesis is used to test the claim?
Use this information to construct a probability table, and then calculate each of the following probabilities:
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