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If two are randomly selected from the box and at least one of them is found to be rated 75-W. what is the probability that both of them are 40- W bulbs?
The two teams differ with respect to their proportions of unacceptable assemblies, what is the p-value associated with such a test of hypothesis?
If you follow Bluman's advice and place the larger variance in the numerator, what is the test value associated with this test of hypothesis?
Can he conclude, at the 0.10 level of significance, that the average trunk diameter of a pine tree is greater than the average diameter of a spruce tree?
First determined and state if the appropriate method to address the problem would be to make a confidence interval (CI) or to conduct a test of hypotheses (HT).
The intern doing this analysis for the company remembers some assumption about normality is required to perform the inference. What is this assumption?
If there really was no difference in the population mean reading scores for the three reading programs, what is the distribution of the test statistic?
Mary has collected her data. What is the null hypothesis for her study? What is the alternative hypothesis for her study? What are the assumptions that must be met about her data.
Describe a way to measure the DV so that each participant would have one score at the end. Would this DV measure be on a continuous scale of measurement? Why is this important? Explain and justify.
You want to determine if the sample result gives good evidence that the true amount of the compound is not equal to 2 gms. Carry out the test, find the P-value, and state your conclusion.
There is a great deal of debate in the medical community concerning how to treat pregnancies when the mother is pregnant with twins. What is the degrees of freedom for this test?
Interpret the results of the regression and provide a conclusion about whether the conventional wisdom is correct. Be sure to include a nicely formatted table of the regression line along with confi
Find the probability that a random sample of 800 students will return more than 50% students with children under 17 living at home with them.
Rothenberg et al. (2004) investigated the effectiveness of using the Hologic Sahara Sonometer, a portable device Compute the Sensitivity of the test. Compute the Positive Predictive Value.
Standard deviation of 4 cm and the distribution of lengths is approximately Normal. What fraction of walleye are between 40 and 48 cm in length?
Do these data substantiate the claim that more ascorbic acid is retained under the new method of storing at the 5 % level of significance?
Consider the normal model N(0.009.052) for the returns of these mutual funds. What value represents the 40th percentile of these returns?
Develop an estimated regression equation that can be used to predict the alumni giving rate given the number of students who graduate. Discuss your findings.
The superintendent of a printing plant has selected a random sample of 100 rolls of paper from a large shipment. State any critical values of the rejection.
Perform the indicated test of hypothesis. Assume the sample is selected from a normally distributed population. State any critical values of the rejection.
Does the data support the Lite Brites claim that the average life of their bulbs is 23.00 months? State the Null (HO) and Research hypothesis (HA).
The Consumer Price Index (CPI) in the U.S. over the period 1965 through 2008. Determine if a linear regression model would be appropriate for these data.
Write a few sentences describing the findings, which will be presented to the director. What should you advise him or her?
Determine sample size requirements. When the results are available you would like your margin of error to be plus or minus 5% for the satisfaction measure and plus or minus $1.50 for the spending va
Lastly, why do researchers utilize an ANOVA of the t-test? Find a set of data that is suitable for an ANOVA and perform both the appropriate ANOVA and the appropriate t-test on the data.