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Suppose that 60% of adults in the population prefer coffee over tea. If you take a random sample of 100 adults, what's the probability that less than 50% of the adults sampled prefer coffee? Write answer in decimals using 4 digits precision.
The accounting department at Weston Materials, Inc., national manufacturer of unattached garages, reports that it takes two construction workers mean of 32 hours and standard deviation of 2 hours to erect the Red Barn model.
With a mean of $8.90 and a standard deviation of $5.70. She waites on 30 parties. What is the probability that she will earn at least $350?
What is the p-value associated with the sample results? What is your conclusion based on the p- value?
If X=85 (sample mean), 8 is population standard deviation, and n=64 is sample size, construct a confidence interval estimate for the population mean.
Determine the average score for ERAU graduates? Determine the value of test statistic? Significance level?
The purchasing company can detect the defective wiring. What is the probability that the purchasing company will find the following?
What is the probability that more than 25% of the business travelers say that the reason for their most recent business trip was an internal company visit?
Can you think of an example where regression analysis can be used? How is regression analysis being used in a retail environment, or how should it be used?
Electricity is commonly traded at the California-Oregon border (COB) and Palo Verde (PV) in Arizona. Assume you take a sample of 100 daily electricity market closing prices (in $/megawatthour) from both COB and PV.
In fiscal 1996, the U.S. Agency for International Development provided 238,300 metric tons of corn soy blend (CSB) for development programs and emergency relief in countries throughout the world.
According to a recent study, 38% of all women will suffer a hip fracture because of osteoporosis by the age of 85. If six women aged 85 are randomly selected, what is the probability that a) None of them will suffer (or has suffered) a hip fractur..
Based on these results, the proportion of the variation in 1993 winnings that is explained by the average number of putts per round and driving distance
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