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Find a bivariate data set relating to your work with a sample size of 10 or more.
a) Determine which is the dependent variable Y and which is the independent variable X. Explain your reasoning.
b) Draw a scatterplot and indicate the relationship if any. Explain.
c) Compute the least-squares regression equation. Show major line items of your work.
Calculate the 95% confidence interval for the rate of positive tuberculin reaction separately for each of the two subpopulation, those with high exposure and those with low exposure.
Point out your final decision concerning hypothesis test and compute p-value for test.
Calculate the expected value and standard deviation of the value.
For the sheet-metal stamping machine in certain factory, the time between failures, X1 has a mean between the failures, of 56 hours and a variance of 16 hours.
If writing scores for population have standard deviation of s = 20, does sample give sufficient evidence to conclude that new composition course has significant effect? Suppose a two tailed test with a = 0.05.
Assume that the master budget for Cannondale shows total variable expenses of $10,000. The budget was based on production of 5,000 units. Cannondale sells all units it produces.
Calculate the sample statistic and standard error you will use to create the test statistic.
Portfolio Risk. Who would view the stock of Learning Tower of Pita as a risk reducing investment - the owner of a gambling casino or a successful bankruptcy lawyer? Explain.
What is the difference between resampling (bootstrapping) and double sampling in research? Is there any difference or is the same? Please explain your response?
Calculate a 3-period moving average for period 7. Compute the MAD of the forecast.
Suppose that the average annual salary for the worker in United States is $39,000.00 and that the annual salaries for Americans are normally distributed with a standard deviation equal to $7,000.00.
At the .05 significance level, can we conclude that the mean waiting time is less than 3 minutes?
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