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Fiesta28 [93]
3 years ago
9

I need to know what this equals

Mathematics
1 answer:
ss7ja [257]3 years ago
5 0

I think <2 would be 45 degrees. <1 is 135 degrees so that means that 4 would be supplementary to angle one. Supplementary angles added together equal 180 degrees. So, you would have to subtract 180-135 leaving you with 45 degrees. This means that 4 would be 45 degrees. Two is vertical to four so it means that they equal the same amount. That means that <2 is 45 degrees.

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The z score is gotten by making use of the formulae below

Z = x - u / σ

Where x = sample mean, u = population mean and σ = population standard deviation.

a)

For our question, u = 38, σ = 12, we are to look for the z score at z ≤ 56, that's x = 56

By substituting the parameters, we have that

z ≤ 56 = 56 - 38/ 12

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To get the probabilistic value, we check the normal distribution table.

The table I'm using will be giving me probabilistic value towards the left of the area.

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b)

Z >23 = 23 - 38/ 12

Z >23 = - 15/ 12

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The probability value of this z score is towards the right of the distribution but the table I'm using is only giving probability values towards the left.

Hence Z >23 = 1 - Z<23

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Z >23 = 1 - 0.1056

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4 0
2 years ago
Read 2 more answers
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