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A history professor decides to give a 12-question true-false quiz. She wants to choose the passing grade such that the probability of passing a student who guesses on every question is less than .10. What score should be set as the lowest passing grade:
a) 10b) 7c) 9d) 8
Use the binomial distribution in the Data Analysis add - in to simulate the distribution of men and women among the next ten arrivals at an emergency room, assuming that, on average, six people out of ten who arrive are men.
What size sample would be required to estimate the proportion of unemployed college students if we want the margin of error not to exceed 3 percent?
If he were to conduct a second study to reduce the maximum error of estimate to 6, about how many hard drives should he include in his new sample?
Within what values will 95.44 percent of sample means of this process fall, if samples of n = 14 are taken and the process is in control (random)?
Suppose you roll a standard die 2000 times and let X be the sum of the values you get. Using the Central Limit Theorem, for what value of a is P[X >= a] approximately equal to P[N(0,1) >= 2] ?
His least squares regression line equation is: "assembly line output" = 1.03 + (5.1389 x Test Score). Which scatter plot has the graph of his line?
A researcher estimates an AR(1) model with an intercept and finds that the OLS estimate of Beta1 is 0.95, with a standard error of 0.002.
Employ a four period moving average and determine the forecasted demand for August. Put your answer in the form xx.x with no additional numbers or symbols.
A random sample of 100 workers in this industry has a mean daily wage of $124. Find a 95% confidence interval for the true mean daily wage of all union workers in the industry.
The manager wants to know the probability that any particular cookie will have fewer than 5. What type of probability distribution will most likely be used to analyze the number of chocolate chips per cookie?
Darnell lives in an area where labor is plentiful and locations for start-ups are relatively cheap. He is also confident that he can find start-up funds for a graphic arts business. As he evaluates the opportunity for his proposed venture, wh..
Utilizing Excel data analysis calculate t distribution also deduce the result. Study of variance is used to investigate if there is a difference in the mean mileage of the three cars.
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