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3 years ago

Help me please): I’m stuck

Mathematics

2 answers:

sineoko [7]3 years ago

6 0

Pi x 1squared = 3.14 cm

Scorpion4ik [409]3 years ago

5 0

Answer:

$A=3.14 cm^2$

Step-by-step explanation:

In order to calculate the area of the circle:

$A = \pi r^2$

$A = \pi 1^2$

$A = \pi$

$A=3.14 cm^2$

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What is the greatest perfect square of 1290

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Refer to the Trowbridge Manufacturing example in Problem 2-35. The quality control inspection proce- dure is to select 6 items,

Ivanshal [37]

Answer:

77.64% probability that there will be 0 or 1 defects in a sample of 6.

Step-by-step explanation:

For each item, there are only two possible outcomes. Either it is defective, or it is not. The probability of an item being defective is independent of other items. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

The true proportion of defects is 0.15

This means that $p = 0.15$

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This means that $n = 6$

What is the probability that there will be 0 or 1 defects in a sample of 6?

$P(X \leq 1) = P(X = 0) + P(X = 1)$

In which

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

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$P(X = 1) = C_{6,1}.(0.15)^{1}.(0.85)^{5} = 0.3993$

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3 years ago

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kenny6666 [7]

Answer:

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ehidna [41]

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Your equation is

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3 years ago