The amount of money college students spend each semester on textbooks is normally distributed with a mean of S195 and a standard deviation of S20. Suppose you take a random sample of 100 college students from this population. There would be a 68% chance that the sample mean (x) amount spent on textbooks would be between: A. S191 and $199. B. S193 and $197. C. S175 and $215. D. S155 and $235.

The difference between tax advoidance and tax evasion

Which of these equations, when solved, gives a different value of x than the other three? a9.1 = -0.2x + 10 b10 = 9.1 + 0.2x c10 – 0.2x = 9.1 d9.1 – 10 = 0.2x

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 12611261 chips and a standard deviation of 118118 chips. (a) determine the 2626th percentile for the number of chocolate chips in a bag. (b) determine the number of chocolate chips in a bag that make up the middle 9696% of bags. (c) what is the interquartile range of the number of chocolate chips in a bag of chocolate chip cookies?