Binomial random variable
Suppose that X is binomial random variable with n = 10 and p = 0.70. Calculate the following probabilities.
a. P(X = 9)
b. P(X = 8)
c. P(X ? 8)
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Change last number from 1.53 to 50 and recalculate confidence interval. Using the results, explain the effect of outlier or extreme value on confidence interval.
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Assume that the lifetimes of batteries employed in tablet computer follow independent Exponential distributions with mean 1.5 years. If battery fails, it is immediately replaced by identical battery. You purchase a new tablet today. Determine the
Suggest two events A and B. The probability of A is 0.3, the probability of B is 0.4, and probability of A intersect B is 0.2. Determine the probability of A union B?
A light bulb manufacturer guarantees that mean life of a certain kind of light bulb is at least 800 hours. A random sample of 39 light bulbs has mean life of 786 hours with standard deviation of 55 hours. Do you've enough evidence to reject the ma
A study explains that 35% of American families who are given coupons will try new product in the first six months. If 100 families are given coupons determine the probability that at least 30 of them will try the new product in six months? Please
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