Which is true about a 90% confidence interval based on a given sample? i. the interval contains 90% of the population. ii. results from 90% of all samples will lie in this interval. iii. the interval is smaller than a 95% confidence interval would be?

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

22 dimes and 9 nickels

step-by-step explanation:

i believe the answer is the polygon, heptagon.