The probability that demand is greater than 1800 gallons over a 2 hour period is : 0.5
<u>Given data :</u>
Mean value of gasoline per hour = 875 gallons
Standard deviation = 55 gallons
<h3>Determine the probability of demand being greater than 1800 gallons over 2 hours </h3>
Demand for gas in 1 hour = X₁
Demand for gas in 2 hours = X₁ + X₂
Therefore ; ( X₁ + X₂) ~ N ( u₁+u₂, sd₁² + sd₂² )
In order to calculate probabilities for normals apply the equation below
Z = ( X- u ) / sd
where : u = 1800, sd = √ ( 55² + 55² ) = 77.78
using the z-table
P( Y > 1800) = P( Z > ( 1800 - 1800 ) / 77.78)
= P( Z>0 ) = 0.5
Hence we can conclude that The probability that demand is greater than 1800 gallons over a 2 hour period is : 0.5.
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Answer:
so correct option is b. -27%
Explanation:
given data
job manufacturing industry = 63.1 thousand
annual rate = 1.7 thousand
time period = 10 year
solution
the total loss of jobs over the 10 years will be:
total loss = 1.7 × 10
total loss = 17 thousand jobs
so that the percent change will be
percent change =
percent change = -27 %
so correct option is b. -27%
Answer:C. Real interest rates expected by British investors are 2 percentage points higher than the real interest rate expected by US investor.
Explanation:
The real interest rate is the market interest rate less the inflation rate.
The inflation rate always reduce the purchasing power of money which is the real measure of the purchasing power of money and not the money face value.
The educational path that will help him realize that goal is: C. 1,200 hour certificate course at a beauty college.
<h3>What is goals?</h3>
Goals can be defined as what a person have the plan to achieve and work towards achieving the set goals.
If his dream was to have his own hair styling salon, 1,200 hour certificate course at a beauty college will be the best choice as it is the educational path that will enable him to achieve his set goal.
Therefore the correct option is c.
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