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Identify the null and alternative hypothesis, test statistic, P-value,critical values and state the final conclusion that addreses the original claim:
The trend of thinner Miss America winners has generated charges that the contest encourages unhealthy diet habits among young women. Listed below are body mass indexes (BM) for recent Miss America winners. Use a 0.01 significance level to test the claim that recent Miss America winners are from a population with a mean BMI less than 20.16 which was the BME for winners from the 1920's and 1930's. Do recent winners appear to be significantly different from those in the 1920's and 1930's?
19.5 20.3 19.6 20.2 17.8 17.9 19.1 18.8 17.6 16.8
Four different assembly processes were under consideration. Sixteen workers were randomly assigned to the four processes, eight per process. The number of correctly assembled units in an eight-hour work shift was recorded:
Make up a scatter diagram with 10 dots for each of the following situations:
Using the raw measurement data presented below, calculate the t value for independent groups to determine whether or not there exists a statistically significant difference between the salaries of female and male human resource managers.
Suppose it costs $25 per student for the administrators to provide the course materials.
Probability of two mutually exclusive events intersecting Can be any value between 0 to 1, Must always be equal to 1.
Based on the Nielsen ratings, the local CBS affiliate claims its 11 p.m. newscast reaches 41% of the viewing audience in the area. In a survey of 100 viewers, 36% indicated that they watch the late evening news on this local CBS station. What is t..
If the probability that it will rain tomorrow is 0.33, then what is the probability that it will not rain tomorrow?
What score was earned by more students than any other score? Why? What was the highest score earned on the exam?
Find a 99% confidence interval estimate of the proportion of people who say that they voted.
Length of smoking time was recorded for each. Mean was =140 hours. Suppose = 8 hours. Determine 95% confidence interval for mean amount of time grocery-store ham is smoked.
The process standard deviation is .15, and the process control is set at plus or minus one standard deviation. Units with weights less than 9.85 or greater than 10.15 ounces will be classified as defects. Round your answer to four decimal places.
Test whether the relationship between the plan at retirement and residential area using Chi square test.
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