The proportion of adults living in a small town who are college graduates is estimated to be p = 0 .6. to test this hypothesis, a random sample of 15 adults is selected. if the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null hypothesis that p = 0.6; otherwise, we shall conclude that p≠0.6 (a) evaluate α assuming that p = 0.6. use the binomial distribution. (b) evaluate β for the alternatives p = 0 .5 and p = 0 .7. (c) is this a good test procedure?

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.

Use the distributive property -7(-2x+u-2)

Me because i don't understand how to do it.: )