# Question

Find the value of z so that the area under the standard normal curve

a. From 0 to z is (approximately) .1965 and z is positive

b. Between 0 and z is (approximately) .2740 and z is negative

c. In the left tail is (approximately) .2050

d. In the right tail is (approximately) .1053

a. From 0 to z is (approximately) .1965 and z is positive

b. Between 0 and z is (approximately) .2740 and z is negative

c. In the left tail is (approximately) .2050

d. In the right tail is (approximately) .1053

## Answer to relevant Questions

Determine the value of z so that the area under the standard normal curve a. In the right tail is .0500 b. In the left tail is .0250 c. In the left tail is .0100 d. In the right tail is .0050 The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. The expectation of the management is that ...For a binomial probability distribution, n = 80 and p = .50. Let x be the number of successes in 80 trials. a. Find the mean and standard deviation of this binomial distribution. b. Find P(x > 42) using the normal ...According to a Gallup poll, 92% of Americans believe in God (Time, June 20, 2011). Suppose that this result is true for the current population of adult Americans. What is the probability that the number of adult Americans in ...The print on the package of Sylvania CFL 65W replacement bulbs that use only 16W claims that these bulbs have an average life of 8000 hours. Assume that the distribution of lives of all such bulbs is normal with a mean of ...Post your question

0