An experimenter has prepared a drug dosage level that she claims will induce sleep for 80% of people suffering from insomnia. after examining the dosage, we feel that her claims regarding the effectiveness of the dosage are inflated. in an attempt to disprove her claim, we administer her prescribed dosage to 20 insomniacs and we observe y , the number for whom the drug dose induces sleep. we wish to test the hypothesis h0 : p = .8 versus the alternative, ha : p < .8. assume that the rejection region {y ≤ 12} is used.

cool

Step-by-step explanation:

(x+3)(x+7)

step-by-step explanation:

1. sometimes

2.   never

3   .08c = 7.50+.05c   250 pages

step-by-step explanation:

1.   sometimes

the theoretical probability of rolling a 1 is 1/6.   perhaps you got really lucky and never rolled a 1   in those 60 times.   your experimental probability is 0.   or perhaps you rolled a 1   20 times.   your experimental probability is 20/60 is 1/3.     it really just depends on how you rolled in that experiment.

2.   never

the probability of the event occurring is 1.   that is being 100 % sure it will happen.   that is the maximum amount of confidence we have.

3.   no customer card cost:   .08 times number of pages

customer card cost:   7.50 + .05 times number of pages

we want to find when it costs the same amount, so we will set these equal

let c = number of pages

.08c = 7.50+.05c

subtract .05c from each side

.08c-.05c = 7.5+.05c-.05c

.03c=7.5

divide each side by .03

.03c/.03 = 7.5/03

c =250  

the cost is the same at 250 pages