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Suppose a company has a design maximum output of 100. Its actual output is 80 and its efficiency is 50%.Calculate its efficient output and its capacity utilization.
A producer can produce a product at a variable cost per unit of $9. The producer can sell the product for $12 each. If the fixed cost is $60,000, how many units must the producer sell to make a prof
What is the probability that between 790 and 810 of these intervals contain the corresponding value of μ? [Hint: Let Y = the number among the 1000 intervals that contain μ
A financial analyst claims that the return rate of a 15-year bond has a standard deviation of 6.8%. Determine whether the hypothesis test claim is left-tailed, right-tailed, or two-tailed.
Researchers studied the effects of adding an exercise program to dieting in the achievement of weight loss. A sample of 15 men ages 18-20 (Group 1) were observed for weight loss using a diet only, a
Calculate the test statistic for a test of the hypothesis that the mean weight loss for the two groups is the same. Give your answer to two decimal places.
In proof testing of circuit boards, the probability that any particular diode will fail is 0.01. Suppose a circuit board contains 200 diodes.
Suppose the population standard deviation = 8. The appropriate sample size for estimating the true population mean within 2 units with 95% confidence level is approximately
A laboratory testing of five samples on the content of a certain water-quality indicator results in the following values: 3.41, 3.06, 2.94, 3.27, and 3.32 mg/L
Ten random measurements in parking lots A and B yield readings with standard deviations of 12 and 9, respectively. Can manufacturer B legitimately claim to provide more uniform lighting?
Researchers studied the effects of adding an exercise program to dieting in the achievement of weight loss. A sample of 45 men ages 18-20 (Group 1) were observed for weight loss using a diet only, a
A researcher wishes to test the hypothesis that the mean age at first marriage for women in Texas is less than 24. In a sample of 56 Texas women, he finds that the average age is 25.4 with a standar
You have many cans of food to organize on a shelf in your pantry. You have 3 cans of soup, 4 cans of beans ,and 5 cans of tomato sauce. Assume that the cans of each type differ in variety . (for exa
Write out the null and the alternative hypothesis. What is the appropriate data analysis method for this study? Calculate the test statistic and effect size. Make the decision, and explain why.
In a normal distribution, what z-score value separates the highest 40% of the scores from the rest of the distribution?
A high school math teacher gave her 30 students a math exam. In this exam, the average scores for the high school students in the United States is 48.00. If she sets the significant level as 0.05, a
Suppose that the weight of a large bag of sugar is N(5.05, 0.081), and that the weight of a small bag of sugar is N(1.01,0.025). Find the probability that five small bags are heavier than one large
Suppose that the number of accidents at a nuclear power plant in one week has a Poisson distribution with mean 3, and suppose that the number of accidents in one week is independent of the number in
Two draws will be made at random from a box containing 5 marbles, red, yellow, green, black and blue. The unconditional probability of getting a red marble on the first draw is 1/ 5 . The unconditio
Suppose that a device stops working if one of its five components fails, and suppose that the lifetimes of the five components are exponentially distributed with means 10000,15000,20000,25000,and 50
Suppose it has been observed that touchdowns scored in a game by your favorite football team are Poisson random variables. The rate is .. = 4 per game. We know from the lecture that the time until t