3 years ago

PLEASE HELP PLEASE PLEASE HELP

Mathematics

1 answer:

Sergeeva-Olga [200]3 years ago

5 0

Answer:

x = 38

Step-by-step explanation:

it is a 90 degree angle, so x + 52 = 90

x = 90 - 52

x = 38

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Define sets and vectors

Afina-wow [57]

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set is a collection of distinct elements. vector is an element of a vector space.

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3 years ago

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Two factories I and II produce phones for brand ABC. Factory I produces 60% of all ABC phones, and factory II produces 40%. 10%

denpristay [2]

Answer:

0.3721 or 37.21%

Step-by-step explanation:

P(I) = 0.60; P(II) = 0.40;

P(not defective I) = 0.90; P(not defective II) = 0.80

The probability that the phone came from factory II, given that is not defective, is determined by the probability of a phone from factory II not being defective divided by the probability of a phone not being defective.

$P(II|not) = \frac{P(II)*P(not_{II})}{P(II)*P(not_{II})+P(I)*P(not_{I})}\\P(II|not) = \frac{0.40*0.80}{0.40*0.80+0.60*0.90}\\ P(II|not) =0.3721 = 37.21\%$