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Find the mean, median, and range for each of the two data sets. b.Find the standard deviation using the rule of thumb for each of the data sets. c.Compare the two sets and describe what you discover. The following data sets shows the ages of the first seven presidents (President Washington through President Jackson) and the seven most recent presidents including President Obama. Age is given at time of inauguration.
First 7: 57 61 57 57 58 57 61Second 7: 61 52 69 64 46 54 47
Calculate η 2 , the percentage of variance accounted for by treatment.
For a new HDTV the mean number of months until repairs are needed is 36.84 with a standard deviation of 3.34 months.
The same for each of the four quarters next year. The seasonal factor for the second quarter is 145. Determine the seasonally adjusted sales for the second quarter of next year.
Would the null hypothesis be accepted or rejected in this case?
A study is conducted to determine if the traffic light patterns at a busy intersection need to be adjusted to help the flow of traffic. Data on the volume of traffic and the traffic patterns during different times of day are recorded.
How can the binomial distribution be used in a business situation? What type of data would you use and what would you learn from this?
Annual family dental expenses for the families of a random sample of ten employees of a company are given below. You can assume the family dental expenses for the employees of the company are normally distributed.
Describe how you would develop a random sample from among students.
What does central limit theorem say about distribution of John's average payoff after 365 bets in a year?
The average U.S. family includes 3.13 persons. To determine whether families in her city tend to be smaller in size compared to those across the United States, a city council member selects a simple random sample of 25 families.
An anatomy teacher hypothesizes that the final grades in her class are distributed as 10% A's, 23% B's, 45% C's, 14% D's, and 8% F's. At the end of the semester, she has the following grades.
In order to control costs, a company wishes to study the amount of money its sales force spends entertaining clients. The following is a random sample of six entertainment expenses (dinner costs for four people) from expense reports submitted by m..
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