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A frequency distribution was constructed for the ages of all 25 of the CEO's of the Company X. To answer the parts of this problem, use the frequency distribution given below.
Ages Frequency
21-25 626-30 931-35 736-40 2
Calculate the mean age of a CEO of this company.
The prices (in dollars) for a sample of roundtrip flights from Chicago, Illinois to Cancun, Mexico are listed. Find the mean, median, mode, range, Q1, Q2, variance, and standard deviation of the flight prices.
A new soft drink is being market tested. A sample of 400 individuals participated in the taste test and 80 indicated they like the taste. At a 5% significance level, test to determine if at least 22% of the population will like the new soft drink.
mileage tests were conducted on a randomly selected sample of 100 newly developed automobile tires. the average tread
question to play a lottery game a player must choose 6 numbers between 1 and 49. the order is not important. six
wall street securities firms paid out record year-end bonuses of 125500 per employee for 2005 fortune february 6 2006.
A marketing survey is conducting in which students are to taste two different brands of soft drink. Their task is to currently identify the brand tasted.
Develop a 95% confidence interval for the amount of total itemized deductions for all taxpayers with an adjusted gross income of $52,500 (to the nearest whole number).
The population of IQ scores forms a normal distribution with a mean of µ = 100 and a standard deviation of o = 15. What is the probability of obtaining a sample mean greater than M = 105.
Using bar charts to compare observed frequencies between variables can be problematic when?
A senior accounting major at Midsouth State University has job offers from four CPA firms. To explore the offers further, she asked a sample of recent trainees how many months each worked for the firm before receiving a raise in salary.
Develop a forecast of enrollment next semester using exponential smoothing with an alpha = 0.2. Assume that an initial forecast for the first semester was 120.
Draw the scatter diagram. Does it appear that x and y are related? If so, how? Test to determine whether there is evidence of a linear relationship.
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