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In the biathlon event of the Olympic Games, a participant skis cross-country and on four intermittent occasions stops at a rifle range and shoots a set of five shots.
If the center of the target is hit, no penalty points are assessed. If a particular man has a history of hitting the center of the target with 90% of his shots, what is the probability of the following?
a. He will hit the center of the target with all five of his next set of five shots.
b. He will hit the center of the target with at least four of his next set of five shots. (Assume independence.)
Find the value of Proportion and construct a 90% confidence interval for proportion.
The average cost per night of a hotel room in New York City is $273 (SmartMoney, March 2009). Assume this estimate is based on a sample of 45 hotels and that the sample standard deviation is $65.
Experts claim that 10% of murders are committed by women. is there enough evidence to reject the claim if in a sample of 67 murders, 10 of them were committed by women? use a significance level of .01
The number of UFO (Unidentified Flying Object) sightings per week in Roswell, NM is a random variable with the cumulative distribution function given below.
Explore the descriptive statistics and draw some scatter plots. Does this meet the basic assumptions of regression?
56% are enrolled in school. If a sample of 500 such children is randomly selected, find the probability that at least 250 will be enrolled in school.
Based on the expected value of the lottery ticket, would you pay $1 for a ticket? Round the answer to 3 decimal places. Omit the "tiny_mce_markerquot; sign in your response.)
Explain the independent variable, covariate, and levels (groups) of eah. Also, explain the dependent variable and its associated measurement scale and expected outcome.
Proportion of out-of-tolerance items is greater than 0.02, the robot will be overhauled. Otherwise it will be allowed to continue operating. What is the probability that a satisfactory robot will be overhauled unnecessarily?
Correlation rule states that if X and Y are correlated, X has caused Y.
What is the probability the circuit will last more than 3000 hrs. What is the probability the circuit will last between 2500 and 2750 hours and what is the probability the circuit will fail within the first 2000 hrs.
Assuming the manufacturer's claim is true, what is the probability the consumer group's sample has a mean life of 52 or fewer months?
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