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sesenic [268]
3 years ago
13

Find the value of x....

Mathematics
1 answer:
andreev551 [17]3 years ago
5 0

Answer:

x = 42

Step-by-step explanation:

x is equal to half the difference of the intercepted arcs, that is

x = 0.5(152 - 68) = 0.5 × 84 = 42

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A company makes rubber rafts. 12% of them develop cracks within the first month of operation. 27 new rafts are randomly sampled
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The probability that the number of tested rafts that develop cracks is no more than 3 is <u>.00006</u>.

The true proportion, p for the population is given to 0.12.

Thus, the mean, μ, for the sample = np = 27*0.12 = 3.24.

The sample size, n, given to us is 27.

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s = √{0.12(1 - 0.12)}/27 = √0.003911 = 0.0625389.

We are asked to calculate the probability that the number of tested rafts that develop cracks is no more than 3, that is, we need to calculate P(X ≤3).

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Learn more about sampling distributions at

brainly.com/question/15507495

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Step-by-step explanation:

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Subtract 14 from both side

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Multiply both sides by (-1)

x = 3

Substitute x=3 in equation (II)

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