Each of the following lists has an average of 50. For each one, guess whether the SD is around 1, 2, or 10. a) 49, 51, 49, 51, 49, 51, 49, 51, 49, 51 b) 48, 52, 48, 52, 48, 52, 48, 52, 48, 52 c) 48, 51, 49, 52, 47, 52, 46, 51, 53, 51 d) 54, 49, 46, 49, 51, 53, 50, 50, 49, 49 e) 60, 36, 31, 50, 48, 50, 54, 56, 62, 53

Which of those sequences is a geometric sequence

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?

If the cost to mail a package is an initial $5 and $0.28 for every pound the total cost to mail a package was $11.27, how much did the package weigh?