The probability of success on a single trial of a binomial experiment is known to be .The random variable x, number of successes, has a mean value of 80. Find the number of trials involved in this experiment and the standard deviation of x.
Answer to relevant QuestionsA binomial random variable x is based on 15 trials with the probability of success equal to 0.4. Find the probability that this variable will take on a value more than 2 standard deviations above the mean. Did you ever buy an incandescent light bulb that failed (either burned out or did not work) the first time you turned the light switch on? When you put a new bulb into a light fixture, you expect it to light, and most of the ...Not all NBA coaches who enjoy lengthy careers consistently put together winning seasons with the teams they coach. For example, Bill Fitch, who coached 25 seasons of professional basketball after starting his coaching career ...Find the standard score z such that the area above the mean and below z under the normal curve is a. 0.3962. b. 0.4846. c. 0.3712. In a study of the length of time it takes to play Major League Baseball games during the early 2008 season, the variable “time of game” appeared to be normally distributed, with a mean of 2 hours 49 minutes and a ...
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