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marshall27 [118]
2 years ago
7

Plz help me well mark brainliest if correct!!

Mathematics
1 answer:
sesenic [268]2 years ago
3 0
Answer:

It’s schedule B
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weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probabi
kenny6666 [7]

Answer:

0.34134

Step-by-step explanation:

In other to solve for this question, we would be using the z score formula

z = (x - μ) / σ

x = raw score

μ = mean

σ = Standard deviation

We are told in the question to find the probability that a worker selected at random makes between $350 and $400

let x1 = 350 and x2= 400 with the mean μ = 400 and standard deviation σ = $50.

z1 = (x1 - μ) / σ = (350-400) / 50 = -1

z2 = (x2 - μ) / σ = (400 - 400) / 50 = (0/50) = 0

From tables, P(z <= -1) = 0.15866

P(z <= 0) = 0.5

Then, the probability would give us, P(-1 ≤ z ≤ 0) =0.5 - 0.15866 =

0.34134

Hence, The probability that a worker selected at random makes between $350 and $400 = 0.34134

7 0
3 years ago
What the result of √[(-2a)^ 2]
Tanya [424]
If you take the square root of a number squared number then they cancel each other out and the number stays the same i.e. √[(4)^2] would equal 4.

In this problem the square root and numbered squared cancel out to leave the problem as -2a.

The solution of this problem is -2a
3 0
3 years ago
Stephen and Jahmya are having lunch. Stephen buys a garden salad ($2.29) a veggie burger ($4.75) and a lemonade ($1.29). Jahmya
Illusion [34]
Stephen's lunch was $8.33 and Jahmya's lunch was $7.48. Stephen's lunch cost more, by 85¢. If Jahmya leaves a tip, she receives $18.25 back. Hope this helps God Bless!
7 0
3 years ago
100x^2-4=0<br> quick pls with all work
Finger [1]
4(5x+1)(5x-1) = 0

1. Take out the GCF (in this case, 4)
4(25x^2-1) = 0

2. This can be further factored. Factor the values within the parenthesis
4(5x + 1)(5x -1) = 0

4 0
2 years ago
Read 2 more answers
Name the digits of pi. At least 50
mars1129 [50]
3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679821480865132823066470938 etc.
6 0
3 years ago
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