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tino4ka555 [31]
3 years ago
8

I need help with this one please

Mathematics
1 answer:
UkoKoshka [18]3 years ago
6 0
A perfectly straight line is 180°, and the right side of the angle of the line is 60°, so the left angle must be 180°-60°, which is 120°
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Thirty-two percent of workers in Troberca City are college graduates. You randomly select 50 workers and ask them is he or she i
Gnoma [55]

The correct option is B) 67.4%

<h3>What is the z- score table?</h3>

A standard normal table (also called the unit normal table or z-score table) is a mathematical table for the values of ϕ, indicating the values of the cumulative distribution function of the normal distribution. Z-Score, also known as the standard score, indicates how many standard deviations an entity is, from the mean.

Given here, P(probability that a worker is a college graduate) = 32%

                                                                                                      = 0.32

q (probability that a worker is not a college graduate) is 1-0.32 = 0.68  

now μ(mean) = n×p

                      = 50×0.32

                      = 16

Again standard deviation σ = \sqrt{npq\\}

                                           σ = \sqrt{50\cdot 0.32\cdot 0.68}

                                           σ = 3.2985

now P(x<17.5) = P((x-μ)/σ <(17.5-16)/3.2985)

                      = P(z<0.45)  

                      = 0.674 [using z table]

                      = 67.4%

Hence option 2 is the correct answer

Learn more about z-table here:

brainly.com/question/29283457

#SPJ2

3 0
1 year ago
Read 2 more answers
Find the values of x and y
const2013 [10]

Answer:

x = 79 y = 22

Step-by-step explanation:

x would be the same as the other side so 79 * 2 would be 158. A whole triangle is 180. 180 - 158 = 22

7 0
3 years ago
Jon makes $76 in 12 hours of work for his mom. How much would Jon make in 20 hours of work.
Lyrx [107]

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around 126

Step-by-step explanation:

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3 years ago
Giles made baklava to serve at a party. He cut it into parallelogram-shaped pieces with the dimensions shown below Whoever gets
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B

Step-by-step explanation:

7 0
3 years ago
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8+7×6/3x3 please help me with the question.
Leto [7]

Answer:

50

Step-by-step explanation:

must use PEMDAS (order of operations)

step 1: multiply 7 and 6

8 + 42 / 3 x 3

step 2: divide 42 by 3

8 + 14 x 3

step 3: multiply 14 and 3

8 + 42

Add to get 50

7 0
3 years ago
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