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A vending machine dispenses coffee into twenty ounce cup. Amount of coffee dispensed into cup is normally distributed with standard deviation of 0.02 ounce. You can permit cup to overfill 4% of the time. What amount must you set as mean amount of coffee to be dispensed?
A test was conducted to determine whether gender of a spokesperson affected the likelihood that consumers would prefer a new product.
Assume that you go to the drive through window at Wendy's and place an order. Two friends of yours independently place orders at the drive through window at the same Wendy's.
At the .05 significance level, can we conclude that the guideline is still reasonable?
Assume a restaurant business succeeds 60% of the time. Suppose that there are three such restaurants open in your city. When they don't compete with one another
A voltmeter is used to measure a known voltage of 100 V. Forty percent of the readings are within 0.5 V of the true value. Estimate the standard deviation for the meter.
Assume that 60 percent of the voters in a particular region support a candidate. Find the probability that a sample of 1,000 voters will yield a sample proportion in favor of the candidate within 4 percentage points of the actual proportion.
In large accounting firm, the proportion of accountants with MBA degrees and at least five years of professional experience is 0.75 times the proportion of accountants with no MBA degree and less than 5 years of professional experience.
Using an alpha level of 0.05, please use SPSS to perform a one-way ANOVA and then determine whether the data below provide evidence for Theory A, Theory B, or Theory C. In other words, is one theory stronger than the others?
An independent testing services road-tested 36 of the automobiles.
At 95% confidence using the p- value approach, test the hypotheses. Let α = 0.1.
If you did not know anything about standard deviation of population from which sample was taken, find out the 95% confidence interval for mean test score.
Over many years of administering tests to my statistics students I have found that the overall average of the scores on the first exam that I give each semester is 76.
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