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categoryالرياضيات
schoolبكالوريوس
event_available2026-07-15
السؤال
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Question 12 (1 point)
Max makes a salary of $55,000. In his industry, salaries follow a normal distribution
$40,000, standard deviation - $5,000). Determine the z-score of Max's
(mean
salary.
-
State the Excel function only. Check your spelling.
Question 13 (1 point)
It is known that Long Life bulbs have a normal distribution, and last an average of
500 hours, with a standard deviation of 100 hours. What is the probability of a bulb
burning between 525 and 550 hours?
State the Excel function only. Check your spelling.
A
Question 14 (1 point)
The distribution of the annual incomes of a group of middle management employees
approximates a normal distribution with a mean of $37,200 and a standard deviation
of $800 How many standard deviations from the mean income is $36 6607
pptx
Question 14 (1 point)
The distribution of the annual incomes of a group of middle management employees
approximates a normal distribution with a mean of $37,200 and a standard deviation
of $800. How many standard deviations from the mean income is $36,660?
State the Excel function only. Check your spelling.
A
Question 15 (1 point)
Given human height average 65 inches and standard deviation 2.5 inches, if your 2-
score is 2.5, what % of the population is shorter than you?
State the Excel function only. Check your spelling.
A/
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