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7. (14 pts) The average number of milligrams (mg) of sodium in a certain brand of low salt microwave frozen dinner is 660 mg, and

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7. (14 pts) The average number of milligrams (mg) of sodium in a certain brand of low salt microwave frozen dinner is 660 mg, and the standard deviation is35 mg. Assume the variable is normally distributed a. If a single dinner is selected, find the probability that the sodium content is fewer than 670 mg (4 decimals) b. If a single sample of 10 dinners is selected, find the probability that the mean of the sample will be larger than 670 mg (4 decimals)

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