As the population ages, there is increasing concern about accident-related injuries to the elderly. an article reported on an experiment in which the maximum lean angle—the furthest a subject is able to lean and still recover in one step—was determined for both a sample of younger females (21–29 years) and a sample of older females (67–81 years). the following observations are consistent with summary data given in the article: yf: 29, 34, 33, 27, 28, 32, 31, 34, 32, 27of: 18,15,23,13,12does the data suggest that the true average maximum lean angle forolder females is more than 10 degrees smaller than it is foryounger females ? state and test the relevant hypothesis atsignificance level .10 by obtaining a p value.

the 3rd on is correct

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

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative