Mrs. Guzman said that when each of her children earns 3,000 Dojo points in school, she will give them a prize. Her son Edwin has 1,550 points. Her daughter Isabella has 960 points.
Isabella said that she's closer to the prize because her number has a 9 in its largest place value
and Edwin's number has a 1 in its largest place value and 9 is bigger than 1. Is she correct?
Use the space below to prove who has more points.

Arandom sample of n = 25 observations is taken from a n(µ, σ ) population. a 95% confidence interval for µ was calculated to be (42.16, 57.84). the researcher feels that this interval is too wide. you want to reduce the interval to a width at most 12 units. a) for a confidence level of 95%, calculate the smallest sample size needed. b) for a sample size fixed at n = 25, calculate the largest confidence level 100(1 − α)% needed.