When y= 55, x= 1/4. What is the value of y when x is 2.5?
1 answer:
Answer:
y = 550 when x = 2.5
Step-by-step explanation:
various ways to work this through: one simple way is to do cross method. arrange the numbers into fractions like this and then multiply the ones diagonal from each other
then multiply 55*2.5 together. multiply 0.25 and y together. Now you have this:
137.5 = 0.25y
solve for y and you get y = 550
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Answer:
The average number of service calls in a 15-minute period is of 14, with a standard deviation of 3.74.
Step-by-step explanation:
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In which
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e = 2.71828 is the Euler number
is the mean in the given interval. The variance is the same as the mean.
Average rate of 56 calls per hour:
This means that , in which n is the number of hours.
Find the average and standard deviation of the number of service calls in a 15-minute period.
15 minute is one fourth of a hour, which means that . So
The variance is also 14, which means that the standard deviation is
The average number of service calls in a 15-minute period is of 14, with a standard deviation of 3.74.