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The amount of fill (weight of contents) put into a glass jar of spaghetti sauce is normally distributed with mean = 859 grams and standard

The amount of fill (weight of contents) put into a glass jar of spaghetti sauce is normally distributed with mean = 859 grams and standard deviation of = 8 grams.

Find the probability that one jar selected at random contains between 839 and 858 grams. (Give your answer correct to four decimal places.)

Find the standard error of the x distribution. (Give your answer correct to two decimal places.) Find the probability that a random sample of 30 jars has a mean weight between 839 and 858 grams. (Give your answer correct to four decimal places.)

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