Offices in some city produce an average of 28 pounds of paper waste per month wi

Question

Offices in some city produce an average of 28 pounds of paper waste per month with standard deviation of 2 pounds. If office in this city is selected at random, find the probability that it produces more than 30.2 pounds of paper waste per month. Write the answer as a percent value, round to two decimal places. The average age of refrigerators in some town is 8 years (96 months) with standard deviation 16 month. A random sample of 36 refrigerators is selected. Find the probability that the mean age of refrigerators in this town is between 90 and 100 months. Write the answer as a percent value, round to one decimal place.

Explanation / Answer

Q7)

P( x > 30.2) ??

P( z> 30.2 - 28 / 2 )

P( z> 1.1 ) = 0.1357

for the other question please post it in a new question

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