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What is the level of measurement for there is no significant difference between marital ages of men and women? and ther eis a significant difference between marital ages between men and women. Recorded was the ages of men and women when they were married. Just ages and they ranged from 14 to 99.
Marketing firm asked the random set of married and single men as to how much they were eager to spend for vacation. At alpha= .05, is a difference in two amounts?
A manager receives a forecast for next year. Demand is projected to be 600 units for the first half of the year and 900 units for the second half.
An accounting firm is planning for the next tax preparation season. From last year's returns, the firm collects a systematic random sample of 100 filings.
Is this a proper probability density function? How do you know? Find the mean, variance, and standard deviation of x, showing your work.
One sample has SS = 48 and a second sample has SS = 32. When both samples have n =5, what is each sample variance and computed pooled variance?
Graph the information using a histogram and a scatter plot in Excel as well. How does seeing the information in a graphical format provide more information?
Aa mean of 72 mph and a standard deviation of 3 mph. Find the interval that contains the sppeds of 95% of vehicles traveling on this section of i-95.
Find the critical value for t and determine the null and alternate hypothesis.
Explain how the marketing analyst can use independent samples to collect the data.
Her mean waiting time was 7.4 minutes. Assume that the standard deviation has been historically known to be 2.2 minutes. At the .05 significance level, test the claim that the mean waiting time is less than 10 minutes.
What is the probability that more than 25% of the business travelers say that the reason for their most recent business trip was an internal company visit?
A market research company surveyed consumers to determine their ranked preferences of energy drinks among the brands Monster, Red Bull, and Rockstar.
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