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Aleksandr-060686 [28]
2 years ago
9

(7a-1)^2 please help me quickly

Mathematics
1 answer:
Sav [38]2 years ago
5 0

Answer:

14a-2

Step-by-step explanation:

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In a large population, 76% of the households have cable tv. A simple random sample of 225 households is to be contacted and the
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Answer:

0.017559

Step-by-step explanation:

Data provided:

Probability of Households Having cable TV, p₀ = 76% = 0.76

Therefore,

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Sample size, n = 225 households

sample proportions is less than 82% i.e p = 0.82

Now,

The standard error, SE = \sqrt{\frac{p_0(1-p_0)}{n}}

or

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or

SE = 0.02847

and,

Z=\frac{p-p_0}{SE}

or

Z=\frac{0.82-0.76}{0.02847}

or

Z = 2.107

therefore,

P(sample porportions < 0.82) = P(Z < 2.107)

now from the p value from the Z table

we get

P(sample porportions < 0.82) =  0.017559

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2 years ago
I need help ASAP please I'm gonna fail
lianna [129]

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Class 1 only

Step-by-step explanation:

I could explain but it sounds like you need an answer quick...

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Which of the following are integer solutions to the inequality below?<br> −2≤×&lt;3
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Answer:

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Step-by-step explanation:

The greater than or equal to sign (≤) demonstrates that the unknown is equal to -2 and greater, but is less than 3, so the largest integer solution is 2, not 3

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The surface area is 552 square cm.

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