Agrocery stores studies how long it takes customers to get through the speed check lane. they assume that if it takes more than 10 minutes, the customer will be upset. find the probability that a randomly selected customer takes more than 10 minutes if the average is 8.56 minutes with a standard deviation of 1.04 minutes.

The probability that a randomly selected customer takes more than 10 minutes will be 8.38%

Explanation

The average or mean is 8.56 minutes and standard deviation is 1.04 minutes.

Formula for finding the z-score is:  

So, the z-score for 10 minutes will be.....

Now, according to the standard normal distribution table,   . So.....

So, the probability that a randomly selected customer takes more than 10 minutes will be 8.38%

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

answer: the sun

explanation:

water cycle describes the evaporation of water from earth's surface, formation of clouds and precipitation water back onto the surface of earth. seventy percent of the earth is covered with water in the form of seas and oceans. the heat of the sun causes the evaporation of water from the surface of the ocean. the water vapors rise and condense to form water droplets. the collection of these water droplets form clouds which rain down again.

the evaporation of the oceans surface water as part of the water cycle is caused by the sun