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tino4ka555 [31]
3 years ago
7

An architect was building a

Mathematics
1 answer:
PolarNik [594]3 years ago
8 0

Answer:

57

Step-by-step explanation:

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What are the solution(s) to the quadratic equation 50 – x2 = 0?
Paraphin [41]

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Step-by-step explanation:

There is no perfect squares in 50

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Someone help ASAP!!
Alinara [238K]

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Step-by-step explanation:

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On September 25, 2011 Michael Vick, the quarterback for the Philadelphia Eagles broke his non-throwing hand in a football game a
miskamm [114]

Answer:

D. We are 95% confident that between about 22% and 28% of ESPN Viewers thought the Eagles would still win the division.

Step-by-step explanation:

We have to calculate a 95% confidence interval for the population proportion.  The population is made up of ESPN viewers.

The sample proportion is p=0.25.

The standard error of the proportion is:

\sigma_p=\sqrt{\dfrac{p(1-p)}{n}}=\sqrt{\dfrac{0.25*0.75}{914}}\\\\\\ \sigma_p=\sqrt{0.00021}=0.014

The critical z-value for a 95% confidence interval is z=1.96.

The margin of error (MOE) can be calculated as:

MOE=z\cdot \sigma_p=1.96 \cdot 0.014=0.028

Then, the lower and upper bounds of the confidence interval are:

LL=p-z \cdot \sigma_p = 0.25-0.028=0.222\\\\UL=p+z \cdot \sigma_p = 0.25+0.028=0.278

The 95% confidence interval for the proportion of ESPN viewers  is (0.222, 0.278) or (22.2%, 27.8%).

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