The average electric bill in a residential area is $72 for the month of April. The standard deviation is $6. If the amou

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The average electric bill in a residential area is $72 for the month of April. The standard deviation is $6. If the amou

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The Average Electric Bill In A Residential Area Is 72 For The Month Of April The Standard Deviation Is 6 If The Amou 1
The Average Electric Bill In A Residential Area Is 72 For The Month Of April The Standard Deviation Is 6 If The Amou 1 (25.67 KiB) Viewed 31 times
The average electric bill in a residential area is $72 for the month of April. The standard deviation is $6. If the amounts of the electric bills are normally distributed, find the probability that (a) the amount of bill (X) for a randomly selected resident will be less than $74; (b) the mean amount (X) of the bill for a random sample of 36 residents will be less than $74.
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