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Compute the correlation coefficient for the data below
X values -5 -1 1 2
Y values 3 -1 -3 3
A/ 0.641
B/ 0.453
C/ - 0.411
D/ - 0.123
Use Chebyshev's theorem to find what percent of the values will fall between 120 and 150 for a data set with mean of 135 and standard deviation of 7.5
Using the probability formulas, find the proportion of employees who either have MBAs or are managers.
Three are selected, at random, without replacement from the batch. What is the probability that the third is not defective given that one of the previous two are defective?
As the financial manager of ABC computers, you are ready to make some decisions. You are trying to see where revenues are going?is the company ready to expand, and if so, when?
Milligrams with standard devation s=1.0 milligram. construct a 95% confidence interval for the difference between the mean nicotine content of two brands of cigarettes.
Comparing Computer Results. Refer to the Minitab display below. The probabilities were obtained by entering the values of n=6 and p = 0.0167.
What is the difference between a null hypothesis and an alternate hypothesis? Explain what is meant by the critical value of a statistical value.
a researcher is interested in whether students who attend private high schools have higher average sat scores than
the proportion of students in private schools is around 11. a random sample of 450 students from a wide geographic area
Calculate the among groups degrees of freedom, determine if the mean ratios for the four neighborhoods are the same?
A researcher conducts an independent measures research study and obtains t= 2.070 with df= 28. How many individuals participated in the entire research study?
a firm has k250000 to spend on labour and raw materials. the output of the firm is axy where a is a constant and x and
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