Either the radius or diameter of a circle is given below. Find the area of the circle based on the information given. First, express the area in terms of pi. Then, round your answer to the
nearest tenth of a unit.
(a) r =4 in
(b) r = 24 in
(c) r = 9 m
(d) d = 22 yd
(e) d = 16 cm
(f) d=1 ft

Let the mean of the population be 38 instances of from 6" - 9" hatchings per nest, and let the standard deviation of the mean be 3. what sample mean would have a confidence level of 95% or a 2.5% margin of error?

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

Which of the following is the result of expanding the series