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One group of accounting students took a distance learning class, while another group took the same course in a traditional classroom. At £ = .10, is there a significant difference in the mean scores listed below? (a) State the hypotheses. (b) State the decision rule and sketch it. (c) Find the test statistic. (d) Make a decision. (e) Use Excel to find the p-value and interpret it.
What is the probability that if you randomly select a student on campus, this is student is male OR majoring in business?
If the manufacturer wants to keep the mean at 12.8 ounces but adjust the standard deviation so that only 2% of the bags weigh less than 12 ounces, how small must that standard deviation be?
the maximum point total for the quarter was 200. The point totals for the 10 students are given in the stemplot below. For the density curve displayed below, which of the following is true?
The "Top Three" at a racetrack consists of picking the correct order of the first three horses in a race. If there are 10 horses in a particular race, how many "Top Three" outcomes are there?
What is the difference between dependent and independent samples? Discuss differences is statistical treatment, statistical power, and data management.
Would the method described above be a good way to determine which team was taller (explain why or why not)?
What is the probability that all 5 are basketball players? If the players are to be arranged in a line, how many arrangements are there if the basketball players are together?
Assume the life of these light bulbs follows a normal distribution. Find the probability that a random sample of 100 light bulbs will have an average life between 1760 and 1775 hours.
Critically illustrate out the difference between a histogram and a dot plot. When might a dot plot be better than a histogram?
If 4.01% of these DVD players have a life span of more than 8 years, what is the standard deviation of the DVD player's life span?
A random sample of size 15 taken from a normally distributed population revealed a sample mean of 75 and a sample variance of 25. The upper limit of a 95% confidence interval for the population mean would equal?
What would be the minimum sample needed to estimate the population mean of the length of carrots using Gro-Haut to within 1.5 cm with 99% confidence?
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