The home inspector who performed the test says that since the mean measurement is less than 4.0, radon abatement is not necessary. Explain why this reasoning is incorrect. There is no uncertainty in the mean measurement. It is not possible to get a mean measurement less than 4 even when the true value is 4 or more. There is an uncertainty in the mean measurement. It is possible to get a mean measurement less than 4 even when the true value is 4 or more.

A. the probability that a product is defective is 0.1. what is the probability that there will be 1 or less defective products out of the next 8 produced products b.the expected number of imperfections in the coating nylon for parachutes is 6 per 100 yards. what is the probability of finding 12 or fewer imperfections in 260 yards c.in a lot of 54 products there are 9 defective products. calculate the probability that not more than 1 is defective from a random sample of 17 products.