M=45-62=-17
x=8-25=-17. its first option clearly
Given:
μ = $3.26 million, averaged salary
σ = $1.2 million, standard deviation
n = 100, sample size.
Let x = random test value
We want to determine P(x>4).
Calculate z-score.
z = (x - μ)/ (σ/√n) = (4 - 3.26)/(1.2/10) = 6.1667
From standard tables,
P(z<6.1667) = 1
The area under the distribution curve = 1.
Therefore
P(z>6.1667) = 1 - P(z<=6.1667) = 1 - 1 = 0
Answer: The probability is 0.
Answer:
390 cm squared
Step-by-step explanation:
15 x 20 = 300
1/2 x 15 x 12 = 90
90 + 300 = 390
4n - (7-6n)
4n -7 +6n (multiply minus to 7-6n)
10n -7 is the answer
1 ft = 12 inches
so 72 inches = 72/12 = 6 feet