If five notebooks cost $5.25 how much would three notebooks cost
2 answers:
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Answer:
99.38%
Step-by-step explanation:
We have that the mean (m) is equal to 124, the standard deviation (sd) 6.4 and the sample size (n) = 64
They ask us for P (x <126)
For this, the first thing is to calculate z, which is given by the following equation:
z = (x - m) / (sd / (n ^ 1/2))
We have all these values, replacing we have:
z = (126 - 124) / (6.4 / (64 ^ 1/2))
z = 2.5
With the normal distribution table (attached), we have that at that value, the probability is:
P (z <2.5) = 0.9938
The probability is 99.38%
Answer:
$77.4
Step-by-step explanation:
GIVEN: On the trip from KC to Springfield, the church van consumed gallons of gas to go
miles. If gas cost
per gallon.
TO FIND: Cost of a round trip to Springfield.
SOLUTION:
Distance of springfield from KC
As it is a round trip total distance
As gallons gas used for
miles distance
gas required for mile
gallons
gas required for miles
gallons
cost of one gallon of gas
cost of gallons of gas
Hence cost of roundtrip to Springfield is $77.4