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Form the summarized table, please give the answer following questions: One person's file is selected at random. Find out the probability that the selected person will fall in the following categories
Calculate and interpret each of the statistics in parts(a) through (f): a) Mean b) Median c) Mode
12- month performance of selected stock markets in world , as measured by each country's Dow Jones Equity Market Index ending October 4,1993, is as follows. Figures are in percentages.
Mr. Allen Profit is studying companies going public for first time. He is studying companies going for first time. He is particularly interested in relationship between the Sales, (X), and /units so
Consider following frequency distribution which is based on the set of sample data: Find out the sample size? Find out the relative frequency of X=4?
Illustrate out the parts of regression equation. Describe Sampling bias and Sampling error.
What is the likelihood all four of selected flights arrived in 15 minutes of scheduled time? What is the likelihood that none of selected flights arrived in 15 minutes of scheduled time?
What is the probability Linda Lahey, company president, received exactly one email between 4 P.M. and 5 P.M. yesterday? What is the probability she received five or more email throughout the same peri
Find out the percent of the Ford Super Duty F-750s logged 65,200 miles or more? Find out the percent of the trucks logged more than 57,060 but less than 58,280 miles?
Suppose the distribution of amounts purchased follows normal distribution. For the sample of 50 customers, answer the following questions. What is the likelihood the sample mean is at least $25.00?
During recent seasons, Major League Baseball has been criticized for length of the games. A report indicated that average game lasts 3 hours and 30 minutes. A sample of 17 games revealed following t
Martin Motors has in stock three cars of same make and model. The president would like to compare the gas consumption of three cars (labeled car A, car B, and car C) using four different kinds of g
A suburban hotel derives its gross income from its hotel and restaurant operations. The owners are interested in the relationship between the number of rooms occupied on a nightly basis and the reve
Conduct tests of hypotheses to find out which of independent variables have significant regression coefficients. Which variables would you consider eliminating? Employ the .05 significance level.
Banner Mattress and Furniture Company desires to study the number of credit applications received each day for the last 300 days. The information is reported on next page.
You work for business analytics department of large commercial bank, and you learn that the balances of the small-business accounts are distributed on log-scale according to normal distribution. Wha
Suppose the heights of kindergarten children can be stated by Normal distribution with a mean of 37.2 inches and standard deviation of 2.1 inches.
Look at the relationship between husband's education and his wife's education separately for couples in which wife is employed full time and in which wife is not employed full time.
Choose full-time workers only. Obtain the plot of hours worked last week with email employ and education.
Explain the relationships you see. Show your plots. Based on these plots, which variable do you think is best predictor of internet usage?
A random variable is normally distributed with the mean of 50 and standard deviation of 5. Find out the probability the random variable will suppose a value between 45 and 55?
For borrowers with the good credit score, the mean debt for revolving and installment accounts is $15,015 (Business Week, March 20, 2006). Suppose the standard deviation is $3540 and that debt amo
A person must score in upper 2% of the population on IQ test to qualify for membership in Mensa, the international high-IQ society.
Find out the probability of completing the exam in one hour or less? Find out the probability that a student will complete the exam in more than 60 minutes but less than 75 minutes?
According to the Sleep Foundation, average night's sleep is 6.8 hours. Suppose the standard deviation is 0.6 hours and that the probability distribution is normal.