Calculate ninety nine percent confidence interval
The weight of a product is measured in pounds. A sample of 50 units is taken from a batch. The sample yielded the following results: =75 lbs. and s=10 lbs. Calculate a 99 percent confidence interval for µ.
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The fixed costs including building, ovens, and displays total $60,000. The variable cost for each loaf of bread is $.50. Westside figures to sell loaves of wheat bread for $2 each. 1) What is the breakeven point? (Write only the number, do not inc
In a more recent study, of a random sample of 500 freshmen, 185 had at least one A in their first semester Calculate the appropriate test statistic to test the hypotheses related to the concern and test at 5% and 1%.
If you live in California, the decision to buy earthquake insurance is an important one. A survey revealed that only 133 of 337 randomly selected residences in one California county were protected by earthquake insurance. Calculate the appropriate
Indicate which test you are performing; show the hypotheses, the test statistic and the critical values and mention whether one-tailed or two-tailed.
The production manager for the XYZ manufacturing company is concerned that the customer orders are being shipped late. He asked one of his planners to check the timeliness of shipments for 1000 orders. The planner randomly selected 1000 orders and
Suppose that a certain college class contains 65 students. Of these, 36 are seniors, 30 are chemistry majors, and 8 are neither. A student is selected at random from the class. (a) What is the probability that the student is both a senior and a che
Assuming the requirements of ANOVA are satisfied, at the .05 level of significance, is there evidence of a significant difference among the mean wait times at the five checkpoints?
If appropriate, use the Marascuilo procedure and α = .01 to determine which, if any, year groups are significantly different in the proportion of passengers who book tickets online.
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