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Questions: John went to see the doctor about a severe headache. The doctor selected John at random to have a blood test for swine flu, which is suspected to affect 1 in 5,000 people in this country. The test is 99% accurate, in the sense that the probability of a false positive is 1%. The probability of a false negative is zero. John's test came back positive. What is the probability that John has swine flu?
You take a random sample of pizzas sold during a one hour period over the next week. Group 1 and Group 2 The results are shown in the table to the at the bottom of this. Does the ad campaign make a difference? Can you suggest a different methodology ..
The sums of squares were computed as SSW = 4773.3 and SSA = 591.2. Use the F test of ANOVA (assume α = 0.05) to decide whether or not there are any differences in true average lumen outputs between the three brands for this type of light bulb.
Estimate the probability that, for this to happen more than 210 tosses are required - Does your outcome agree with the Central Limit Theorem?
tracking a ballistic missile with normal distribution measurement errorthe trajectory meters secondsxt -196000 980t
The reac- tion times (in seconds) before and after consuming four drinks are in data file XR11050. At the 0.005 level, has the program host made his point? Identify and interpret the p-value for the test.
Discuss how t test can be employed in hypothesis testing by the use of directional vs. nondirectional hypotheses. Discuss types of research where using the t statistic may be an appropriate alternative to using a z-score.
What is the characteristic function of N? What is the mean and variance of N? What is the pmf of N? What is the probability that N is an even number?
Calculate and interpret the effect size for this test and calculate and interpret any post-hoc test if necessary - Conduct all 6 steps of an independent-samples t test. Be sure to label all six steps
Analyze the above output to determine the regression equation. Find and interpret β?1in the context of this problem. Find and interpret the coefficient of determination (r-squared)
The annual cost carrying a pound of cheese in a refrigerated storage area is $12. Determine the optimal order size and the minimum total annual inventory cost.
Using the Hypothesis Tests Two Sample file and a .05 significance level, test whether there is a difference in the mean salary for men versus women.
Calculate the margin of error that would be used to determine a 95% confidence interval for the mean pulse rate of all women.
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