1)In a study conducted for the State Department of Education, 30% of the teachers who left teaching did so because they were laid off

1)In a study conducted for the State Department of Education, 30% of the teachers who left teaching did so because they were laid off. Assume that we randomly select 10 teachers who have recently left their profession Find the probability that exactly 4 of them were laid off A. 3000 B. 2668 C..2001 D. .0090
2) The area under the normal curve between Z = 0 and Z=1 is the area w under the normal curve between Z=1 and Z=2. A. Less than B. Greater than C. Equal to D. A, B or C above dependent on the value of the mean E. A, B or C above dependent on the value of the standard deviation
3) If the random variable X has a mean of u and a standard deviation o, then (X- 1)/o has a mean and standard deviation respectively Α. μ and σ B. K ands C. O and 1 D. 1 and 0 22. The fill weight of a certain brand of adult cereal is normally distributed with a mean of 910 grams and a standard deviation of 5 grams. If we select one box of cereal at random from this population, what is the probability that it will weigh less than 904 grams? A..8849 B. 3849 C..1151 D. .7698 F2302
4)The normal approximation of the binomial distribution is appropriate when: A. np 10 B. n(1-P) 2 10 C. np