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The heights in inches of 18 randomly selected adult males in LA are listed as: 70, 69, 72, 57, 70, 66, 69, 73, 80, 68, 71, 68, 72, 67, 58, 74, 81, 72.
1. Display the data in a stem-and-leaf plot.
2. Find the mean.3. Find the median.4. Find the mode.5. Find the range.6. Find the variance.7. Find the standard deviation.
Recognize and describe potential threats (up to 3) to internal validity.
Dertermine the probability that a male is a Major or a Colonel?
Determine the probability that number of requests in 10 hour work day is between 68 and 80 inclusive? Give your answer to four decimal places.
In all, 53 say "good." Does the poll give reason to conclude that more than half of all seniors think their job prospects are good? The hypotheses for a test to answer this question are?
Create and attach a normal curve to this document with the following elements: the normal curve, a label of the average number of shoppers, and labels for the sample means of 441 and 446 shoppers. Include all the appropriate symbols.
Conduct an ANOVA comparing the anxiety levels (at posttest only) of participants across all three treatment conditions: CBT, psychodynamic, and supportive therapy.
A ten year old survey found that the average income of sole proprietor CPA's was $74,914. To update this information, a new survey of 112 proprietor CPA's was taken and it showed a mean of $74,695.
Test the hypothesis that the annual incomes of corporate trainers in areas of more than 500,000 are significantly more than those in areas of less than 100,000.
How should he go about taking samples to gather data for testing the hypotheses?
Suppose that 50 identical batteries are being tested. After 8 hours of continuous use, assume that a given battery is still operating with a probability of 0.70 and has failed with a probability of 0.30.
Let X be the number of gallons of ice cream that is requested at a certain store on a hot summer day. Assume that f(x)= 12x(1000-x)^2/10^12, 0
Each year approximately 160 colleges compete in national concrete canoe competion. Each team should design a seaworthy canoe from a substance not known for its capacity to float. T
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