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A engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 130 lb and 181 lb. The new population of pilots has normally distributed weights with a mean of 136 lb and a standard deviation of 26.3 lb. If a pilot is randomly selected, find the probability that his weight is between 130 and 181 lbs.
1. A developer wants to claim that his new "green" home design results in lower electricity use than in conventional homes. His 2,000 square foot model home uses 1,200 kilowatt hours per month on average.
Banner Mattress and Furniture Company wishes to study the number of credit applications received per day for the last 300 days.
Find out: The slack on all activities. The critical activities. The critical path.
exercise to reduce stress a survey by mens health magazine stated that 14 of men said they used exercise to reduce
If Chebychev Inequality gives the lower bound for probability. For the present problem the lower bound for the probability is 0.75 and actual probability is 0.87.
What is the importance of the null hypothesis? Why has it been the backbone of mainstream hypothesis testing for decades? What are its limitations?
Do you use probability in your profession or real life? You most likely do. For example, chance of rain tomorrow is 27%. We hear similar probabilities in the media all the time.
What is the probability that: The first randomly selected drinker qualifies? Three sports drink users will have to be interviewed to find the first Gatorade drinker?
Scores are whole values. The top 3% receive $500.00. what is the minimum score you would need to receive this award?
Find the probability that a customer with 2 or more late payments will actually default on his payments and, in light of this probability, criticize the manager's credit plan.
The equation for the line of best fit is given as Y = 1.8x + 28.7, and the Pearson correlation coefficient was 0.61. Was the correlation coefficient significantly different from zero? Use α = 0.05.
the life expectancy of a common brand of battery is normally distributed with a mean of 400 hours and a standard
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