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svp [43]
3 years ago
15

It is known that 10% of the calculators shipped from a particular factory are defective. In a random sample of ten calculators,

the probability of no more than one defect is:______
Mathematics
1 answer:
umka2103 [35]3 years ago
5 0

Answer:

0.7361

Step-by-step explanation:

In this question we have

number to be 10

Then we have a probability of 10% = 0.10

We have q = 1-p

= 1-0.10 = 0.90

Then the probability of not more than 1 being defective:

P(x=0) + p(x= 1)

(10C0 x 0.1⁰ x 0.9^10-0)+(10C1 x 0.1¹ x 0.9^10-1)

= 1 x1 x0.3487 + 10 x 0.1 x 0.3874

= 0.3487 + 0.3874

= 0.7361

This is the the required probability and this answers the question.

probability = 10 percent = 0.1

q= 1- 10percent = 90% = 0.9

n = 4

To get the required probabiltiy for this question is

P(not greater than one is defective )=P(x=0)+P(x=1)

= 4C0x(0.1)⁰x(0.9)⁴+4C1x(0.1)¹x(0.9)³

= 0.9477

The required probability is 0.9477

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tatiyna

Answer:

23.28 hours

Step-by-step explanation:

He earns 5.8 per hour of part-time work. You can find this by doing 87/15
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3 0
3 years ago
Lex was chatting with his friends thomas and mike. He was wondering how much it will cost him to take a taxi from his house to w
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Answer:

$28.3

Step-by-step explanation:

x=rate for 1km

y=initial fee

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Thomas: $24.50 for 10km -> 24.50 = 10x + y

Using those two equations we see the following:

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Using that value with one of the original equations we can calculate the initial fee.

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Mike paid 15*2.1=31.5 ($2.1 for every km) plus the initial fee, his total was $35.

We subtract the 31.5 from the 35(total) and get the initial fee, which is $3.5.

<u>Let's see what Lex will pay:</u>

Km travelled times 2.1 (the rate for 1km) plus 3.5 (the initial fee).

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Lex will pay $28.3 for the same taxi company to travel 12 km.

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