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Westkost [7]
4 years ago
12

What is the probability of getting heads and a b, c, and d

Mathematics
1 answer:
sp2606 [1]4 years ago
4 0
I mean probably of getting head is a half if that's what u mean but what is a,b,c,d
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Answer:

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Hope this helps!

Step-by-step explanation:

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An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 160 engines
abruzzese [7]

Answer:

Test statistic   Z = 2.1097

Step-by-step explanation:

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

Given that size of the sample 'n' = 160

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Mean of the sample(x⁻) = 5.4

Level of significance =0.1

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

Test statistic

    Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }

   Z = \frac{5.4-5.3}{\frac{0.6}{\sqrt{160} } }

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<u><em>Final answer</em></u>:-

Test statistic   Z = 2.1097

5 0
3 years ago
brianna deposit $680.00 into savings account that pays a simple interest rate of 1.29% how much will she earn after 3 years
nordsb [41]
Here's the equation for one year:
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1.0387(680)
Multiply:
706.316
We can round up:
She will have $706.32, and earn $26.32
7 0
3 years ago
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