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galina1969 [7]
2 years ago
5

A box contains 30 radio chips of which 10 are defective. If 7 chips are picked at random out of the box randomly, what is the pr

obability that at least 8 are defective?
Needs to show all work.
Mathematics
2 answers:
babunello [35]2 years ago
8 0

Answer the chace is 50%

Step-by-step explanation:

because if you  defined it then simplify it u get 50

Tanzania [10]2 years ago
6 0

Answer my question first

if one ratio is given find all other find sin30+cos30?

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When water is released from the Kinzua Dam it is released gradually. The water level in Kinzua reservoir changes at an average r
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Answer:

Option D

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Step-by-step explanation:

To easily solve this problem, we apply a rule of three

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x =  2442.66 inch

The nearest number for this value is option D

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3 0
3 years ago
A study has indicated that the sample size necessary to estimate the average electricity use by residential customers of a large
Zanzabum

Answer:

\sigma=547.1125

Step-by-step explanation:

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ME=z_{\alpha/2}\times \frac{\sigma}{\sqrt{n}}\\\\

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ME=z_{\alpha/2}\times \frac{\sigma}{\sqrt{n}}\\\\\\30=1.645\times\frac{\sigma}{\sqrt{900}}\\\\\sigma=\frac{30^2}{1.645}\\\\=547.1125

Hence, the population standard deviation is 547.1125

7 0
3 years ago
In january, wally's widget world had sales of $12,500 and expenses of $10,200. the profit for january was _____. 2,300 7,900 10,
kotykmax [81]
2,300
I hope this helps!
4 0
3 years ago
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Help........Write an equation and solve:
Tom [10]

Answer:

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Step-by-step explanation:

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Then:  (6 lb/mo)m = 30 lb, and m = (30 lb) / (6 lb/mo) = 5 months

3 0
3 years ago
What is the equivalent of 96 yd in ft.?
Maksim231197 [3]
First you would convert yards into feet. 1 yard=3 feet.
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4 0
2 years ago
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