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Suppose a regession analysis provides the following results: bus0=4.0, bsub1=0.0, Ssubb0-1.0, ssubb1=4.0, SST=67.36, SSE=50.0 and n=20. Use this information to solve the following problembs:
a) Test the hypthesis Hsub0: Betasub0=0 , Hsuba:Betasub0 not equal to zero. Using the 5% level of significance. State the decision rule , the test statistic and your decision.
b)Test the hypothesis. Hsub0:Betasub1 less than or equal to 0, Hsuba: Betasub1>0 using a 5% level of significance. State the decision rule , the test statistic , and your decision . What can be drawn from the test result.
Give a brief description of a real-world example in which one measure of central tendency provides useful information while another measure of central tendency provides meaningless (or even misleading) information.
What size random sample should you take if you want to estimate the annual salary in the population with 99 percent confidence and a maximum margin of error of $250?
Why is it significant to be familiar with frequency distributions in the business world? Provide examples by using a distribution chart from a set of data.
Determine the probability that the project will be completed in 90 days or less.
a candy company distributes boxes of chocolates with a mixture of creams toffees and cordials. suppose that the weight
according to police sources a car with a certain protection system will be recovered 88 of the time. find the
Probability of selecting a graduating college who had given blood that percent of the time. What is the mean number of times a person gave blood based on this poll?
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.
Describe what the researcher must do if one of the requirements is not met and give illustrations.
The Oregon health & science university's news website gives information on a study that found that some commercial cigarette brands contain 10 to 20 times higher percentages of nicotine in the "free-base" form, that is, the form thought to be ..
Calculate the standard deviation of the number of available rooms in that sample. Construct a frequency distribution of the sample mean, and plot a histogram of this distribution.
Construct the payoff table for this decision situation. Compute the expected value of each alternative amount of milk that could be stocked, and select the best decision.
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