77, 80, 87, 88, 92, 94, 99
the median is 88
Q1 is 80 and Q3 is 94
94-80 = 14 which is the interquartile range
therefore, your answer is D) 14
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Answer:
P(x< 18) = 0.986
Step-by-step explanation:
Step 1: find the z-score using the formula, z = (x - µ)/σ
Where,
x = randomly chosen values = 18
µ = mean = 7
σ = standard deviation = 5
Proportion of the population that is less than 18 = P(x < 18)
Plug in the values into z = (x - µ)/σ, to get z-score.
z = (18 - 7)/5
z = 11/5 = 2.2
Step 2: Find P(x< 18) = P (z<2.2) using z-table.
The probability that corresponds with z-score calculated is 0.986.
Therefore,
P(x< 18) = 0.986
In this context epsilon mean "member of", so "x ϵ" means "x is a member of."
<span>Epsilon is a Greek letter and its meaning in mathematics depends on context</span>
