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AURORKA [14]
3 years ago
15

Based on experience, the probability that an incoming email is spam (an undesired message of solicitation) is 38%. If three emai

ls are in my inbox, what is the probability that:A. All three messages are spam.B. At least one of the three messages are spam.C. None of the three messages are spam.
Mathematics
1 answer:
SCORPION-xisa [38]3 years ago
7 0

Answer:

0.0549

0.7617

0.2383

Step-by-step explanation:

Given that:

Probability that incoming email is spam ;

P(spam) = 0.38

If three emails are in my inbox, what is the probability that:

A. All three messages are spam.

P(1st message being spam) * p(second message being spam) * p(3rd message being spam)

= (0.38) * (0.38) * (0.38)

= 0.054872

= 0.0549

B. At least one of the three messages are spam.

1 - p(none of the 3 messages are spam)

P(none of the 3 messages are spam)

P(not spam) = 1 - p(spam) = 1 - 0.38 = 0.62

1 - [P(not spam) * p(not spam) * p(not spam)]

1 - (0.62 * 0.62 * 0.62)

= 1 - 0.238328

= 0.761672

= 0.7617

C. None of the three messages are spam.

P(not spam) = 1 - p(spam) = 1 - 0.38 = 0.62

P(not spam) * p(not spam) * p(not spam)

(0.62 * 0.62 * 0.62)

= 0.238328

= 0.2383

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Step-by-step explanation:

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All rational numbers and irrational numbers are REAL numbers, hence, 75% is a real number.

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3 years ago
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<h2>Answer:</h2>

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<h2>Step-by-step explanation:</h2>

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Hence, from equation (1) and (2) we have:

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i.e.

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Step-by-step explanation:

1. The decimal forms of some real numbers, like( ), terminate

A number is terminating if it has decimal with finite number

So, \frac{3}{16}= 0.1875 as decimal stops after 4 digits so it is terminating.

2.  the decimal forms of other real numbers, like( ), do not terminate, but have a repeating pattern.

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So, answers will be:

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Keywords: Decimals

Learn more about decimals at:

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#learnwithBrainly

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Step-by-step explanation:

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