Number of Defective COVID-19 Rapid Antibody Test Kit Suppose three test kits are tested at random. Let D represent the defective test kit and let N represent the non-defective test kit. If we let X be the rand

Suppose that Wall A is constructed by stacking 30 metal blocks, and that the height of each metal block is an independent N(50, 10) normal random variable. Suppose that Wall B is constructed by stacking 25 wood blocks, and that the height of each wood block is an independent N(61, 4) normal random variable. What are the distributions of the heights of Wall A and Wall B? (b) What is the probability that Wall A is taller than Wall B?

Select the appropriate response. bag contains 15 red balls and 3 green balls. One at a time a ball is selected, the color is recorded and the ball is returned to the bag. This is done until 100 balls have been pulled from the bag. X = number of outcomes that are red. Is X a binomial random variable? O Yes, is a binomial distribution. No, not a binomial because the number of trials is not fixed (known). O No, not a binomial distribution because there are more then two outcomes. O No, not a binomial because the probability of a success changes with each trial (the trials are not independent).

a pair of dice is stimultaneously tossed.  Find the probabilty that the sum of the outcomes is an even number , the probabilty that the sum of the outcomes is at least 8                                                                         the probabilty that the sum of the outcomes is an odd number or a number less than 6        write the probability distribution of the random variable x representing the sum of the outcomes