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Two percent (.02) of the items produced by a machine are defective. A random sample of 55 items is selected and checked for defects. Use the normal approximation to the binomial to find:The probability that the sample will contain 4 or more defects?
What is this maximin value
Identify the type of study proposed and indicate its specific strengths and weaknesses and
The area under the density curve that lies between 15 and 20 is 0.414. What percentage of all possible observations of the variable are either less than 15 or greater than 20?
In a sample of 120 people, 50 indicated that they prefer domestic automobiles, 60 said they prefer foreign-made cars, and 10 indicated no difference in their preference. At a 0.05 level of significance, determine if there is evidence of a s..
Assume that the result is a sample size beyond what you can obtain. Use the compromise function to compute alpha and beta for a sample half the size. Indicate the resulting alpha and beta. Present an argument that your study is worth doing with the s..
Calculate the regression equation for this data
2.Describe the advantages and disadvantages of quasi-experiments? What is the fundamental weakness of a quasi-experimental design? Why is it a weakness? Does its weakness always matter?
a. What are the mean and the standard deviation of the sample mean? What is the probability distribution for the sample mean? Describe this sampling distribution and draw the graph of this probability distribution with its mean and standard deviation..
Accepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), "E" or "e" (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the deci..
Compute the expected time until the 100 th student arrives. What is the probability that the time between the arrival of the 200th and the 201st student exceeds 2 days?
H0: pi1- pi2 .01 at alpha =.05 where p1=.08, p2=.035, n1 = 200, n2 = 400. Indicate which test you are performing; show the test statistic and the critical values and mention whether one-tailed or two-tailed.
Advise you about the variables to remove to make factor analysis possible - Factor analysis needs
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