The amount of fill (weight of contents) put into a glass jar of spaghetti sauce is normally distributed with mean ? = 842 grams and standard deviation of ? = 14 grams. (b) Find the probability that...

(b) Find the probability that one jar selected at random contains between 844 and 864 grams. (Give your answer correct to four decimal places.)


(d) Find the mean of the x distribution. (Give your answer correct to the nearest whole number.)




(ii) Find the standard error of the x distribution. (Give your answer correct to two decimal places.)




(e) Find the probability that a random sample of 23 jars has a mean weight between 844 and 864 grams. (Give your answer correct to four decimal places.)