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Given the following profit table determine the minimax regret decision.
States of Nature
Decision
S1
S2
S3
d1
-100
100
87
d2
20
45
-80
d3
34
-90
d4
10
d1 or d4
One professor teaches a large section, section A, of a particular class, and on the first test of the term, the test scores in section A were approximately normally distributed with a mean of 78 and a standard deviation of 6.
The R.R. Bowker Company of New York collects information on the retail prices of collectible children's books and publishes its findings in Publisher's Weekly.
A probability distribution is a mutually exclusive listing of the outcomes of an experiment which can occur by chance and the corresponding probabilities of occurrence.
Using the finite population correction factor, compute the standard error for each of the three firms given a sample of size 50.
estimating confidence interval for mean value of y dependent variable.consider the simple linear regression of y
National average for 2-year leases is 30,000 miles. Select the suitable hypothesis.
Before starting the trial, a pilot study is conducted involving 7 participants. Is there a statistically significant difference in blood pressures overtime? Run the test at a 5% level of significance.
A leasing firm claims that the mean number of miles driven annually,M , in its leased cars is less than 13020 miles. A random sample of 90 cars leased from this firm had a mean of 12750 annual miles driven.
Suppose we select a sample of 16 cuts from various CDs sold by CRA CDs, Inc. What can we say about the shape of the distribution of the sample mean?
question the probability that house sales will increase in the next 6 months is estimated to be 0.25. the probability
Assume a factory manager wishes to buy machines to perform a certain task in a production process. Certain key parts are produced by these machines.
What is the mean number of streaked-shelled snails and what is the standard deviation of the number of streaked-shelled snails?
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