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Rama09 [41]
4 years ago
10

Make up your own “which one doesn’t belong” example:

Mathematics
1 answer:
Stolb23 [73]4 years ago
6 0
Caca pipipoopoo checkkkkkkkk
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The life of light bulbs is distributed normally. The standard deviation of the lifetime is 25 hours and the mean lifetime of a b
lesya [120]

Answer:

<em>The  probability of a bulb lasting for at most 552 hours.</em>

<em>P(x>552)  = 0.0515</em>

Step-by-step explanation:

<u><em>Step(i):</em></u>-

Given mean of the life time of a bulb = 510 hours

Standard deviation of the lifetime of a bulb = 25 hours

Let 'X' be the random variable in normal distribution

Let 'x' = 552

Z = \frac{x-mean}{S.D} = \frac{552-510}{25} =1.628

<u><em>Step(ii):-</em></u>

<em>The  probability of a bulb lasting for at most 552 hours.</em>

<em>P(x>552) = P(Z>1.63)</em>

<em>                = 1- P( Z< 1.63)</em>

<em>                =  1 - ( 0.5 + A(1.63)</em>

<em>               =   1- 0.5 - A(1.63)</em>

<em>               =   0.5 -A(1.63)</em>

<em>               =   0.5 -0.4485</em>

<em>              =  0.0515</em>

<u><em>Conclusion:-</em></u>

<em>The  probability of a bulb lasting for at most 552 hours.</em>

<em>P(x>552)  = 0.0515</em>

<em>           </em>

7 0
3 years ago
What is the solution to the linear equation?
slega [8]

Answer:

A is the correct answer i took the test

6 0
3 years ago
1/4c= __pints please help me this is really hard
Studentka2010 [4]

Answer:

0.125.

If c is cup then 1 cup = 0.5 US Liquid pint and 1/4c should be 0.125.

Step-by-step explanation:


4 0
3 years ago
Find the length of the radius of the circle.
bearhunter [10]

Answer:

C)  6 inches

Step-by-step explanation:

(√72)² = x² + x²

72 = 2x²

72/2 = x²

36 = x²

√36 = √x²

6 = x

x = 6 inches

3 0
3 years ago
Read 2 more answers
Which answer is equal to the quotient in the expression below? (2x3 - x2) (x2)
serg [7]

(2x3 - x2) / (x2)

= 2x^3/x^2 - x^2/x^2

=2x - 1

answer

2x - 1

4 0
3 years ago
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