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Question: Your company has a contract to perform preventive maintenance on thousands of air-conditioners in a large city. Based on service records from previous years, the time that a technician spends servicing a unit averages one hour with a standard deviation of one hour. In the coming week, your company will service a simple random sample of 70 units in the city. You plan to budget an average of 1.1 hours per technician to complete the work. Will this be enough time?
Find the probability that a randomly selected student is a male binge drinker, and ?nd the probability that a randomly selected student is a female binge drinker.
Calculate the profit earned/loss incurred on; a high performance tire that exceeds 40,000 miles, a high performance tire that does not exceed 40,000 miles.
Fit the model E(y) = β0 + β1x to the data.- Calculate the residuals for the model.- Plot the residuals versus x. Do you detect any trends? If so, what does the pattern suggest about the model?
Cathy and Jen plan to meet at a cafe, and each will arrive at the cafe at a random time between 11:00 AM and 11:30 AM, independently of each other. Find the probability that the first to arrive has to wait between five and ten minutes for the othe..
write a brief description of a real-world example in which one measure of central tendency provides useful information
A single amoeba is in a pond. Each day, each amoeba present in the pond will die with probability p, will split into two live amoebas with probability q, and will stay alive but not split with probability 1 - p - q.
MATH 221 Statistics for Decision Making Assignment. Create plots for the three binomial distributions above. You can create the scatter plots in Excel by selecting the data you want plotted, clicking on INSERT, CHARTS, SCATTER, then selecting the ..
Two students are asked to measure the rate of emission of alpha particles from a certain radioactive sample. Student A watches for 2 minutes and counts 32.
Assuming that the conditions for the binomial distribution are satisfied, what is the probability that the sample will lead Ziteck to reject the shipment if the defect rate is actually 0.05?
Based on benchmarking with comparable facilities in similar metropolitan areas, is it feasible currently to achieve a C-section rate of 10%?
For the sheet-metal stamping machine in certain factory, the time between failures, X1 has a mean between the failures, of 56 hours and a variance of 16 hours.
a manufacturer claims that the batteries it makes will last 18 hours with a standard deviation of 1.5 hours. if the
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