Answer: 0.1359
Step-by-step explanation:
mean = $400
Standard deviation = $50
Since the wages is normally distributed , the first thing is to find the z - score.
z =
finding the z - value for 300 and 350 , we have
z =
z =
2 = -2
also
z =
z =
z = -1
The next thing is to check the calculated value on z - table.
From z - table :
P (z -2 ) = 0.0228
P ( z ) = 0.1587
combining the two
P ( -2z-1 ) = 0.1587 - 0.0228
P ( -2z-1 ) = 0.1359
Therefore , the the probability that a worker
selected at random makes between
$300 and $350 = 0.1359
Answer:
The circumference of the circle is about 226.08 inches. ANSWER: 3.14 × 72 = 226.08 in.
Step-by-step explanation:
Answer:
Area of semicircle is
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Answer:. GCF of first two terms is 7r^2.
GCF for last two terms is 2
Step-by-step explanation: GCF means the largest number that the terms can be divided by evenly.
7 and 14 are both divisible by 7. The factors of those terms are (7r^2)(r +2).
r^3 means r × r × r. r^2 means r × r so r^2 is a factor of r^3
2r and 4 are both divisible by 2. The factors of those terms are (2)(r +2)