The number of chocolate chips in an 18-ounce bag of chips ahoy! chocolate chip cookies is approximately normally distributed with a mean of 1262 chops and standard deviation 118 chips according to a study by cadets of u. s. air force academy. (source: brad warner and jim rutledge, chance 12(1): 10-14, 1999)

(a) what is the probability that a randomly selected 18-ounce bag of chips ahoy! contains fewer than 1000 chocolate chips? (use 2-table)

(b) what is the probability that a randomly selected 18-ounce bag of chips ahoy! contains more than 1200 chocolate chips?

(c) what is the probability that a randomly selected 18-ounce bag of chips ahoy! contains between 1000 and 1400 chocolate chips, inclusive?

It appears that people who are mildly obese are less active than leaner people. one study looked at the average number of minutes per day that people spend standing or walking. among mildly obese people, the mean number of minutes of daily activity (standing or walking) is approximately normally distributed with mean 376 minutes and standard deviation 64 minutes. the mean number of minutes of daily activity for lean people is approximately normally distributed with mean 528 minutes and standard deviation 107 minutes. a researcher records the minutes of activity for an srs of 7 mildly obese people and an srs of 7 lean people. use z-scores rounded to two decimal places to answer the following: what is the probability (image for it appears that people who are mildly obese are less active than leaner people. one study looked at the averag0.0001) that the mean number of minutes of daily activity of the 6 mildly obese people exceeds 420 minutes? what is the probability (image for it appears that people who are mildly obese are less active than leaner people. one study looked at the averag0.0001) that the mean number of minutes of daily activity of the 6 lean people exceeds 420 minutes?

Find the ratios of the corresponding sides

What is the area of the shaded sector?