Will give !

a random sample has been taken from a population. a statistician, using this sample, needs to decide whether to construct a 92% confidence interval for the population mean or a 98% confidence interval for the population mean. how will these intervals differ?

a. the wider interval is dependent on a larger sample size
b. the wider interval is dependent on whether the sample is unbiased
c. the wider interval is dependent on whether a z statistic or a t statistic is used
d. the 92% confidence interval will be wider than the 98% confidence interval
e. the 92% confidence interval will not be as wide as the 98% confidence interval

a. the are of the rectangle is 18.25

b. 18.25 times two is 36.50

rae me : d

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