Estimate 970,390+741,206

Mathematics

2 answers:

Alisiya [41]3 years ago

6 0

This would be 1,711,596.
hope this helps!

DanielleElmas [232]3 years ago

6 0

Ok so, the estimate would be: 1,000,000+700,000=1,700,000
but the answer without the estimate is 1,711,595. but this is the estimate 1,700,000

hope this helped you, please give brainiest if I helped you, thank you!

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Suppose 52% of the population has a college degree. If a random sample of size 563563 is selected, what is the probability that

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Answer:

The value is $P(| \^ p - p| < 0.05 ) = 0.9822$

Step-by-step explanation:

From the question we are told that

The population proportion is $p = 0.52$

The sample size is n = 563

Generally the population mean of the sampling distribution is mathematically represented as

$\mu_{x} = p = 0.52$

Generally the standard deviation of the sampling distribution is mathematically evaluated as

$\sigma = \sqrt{\frac{ p(1- p)}{n} }$

=> $\sigma = \sqrt{\frac{ 0.52 (1- 0.52 )}{563} }$

=> $\sigma = 0.02106$

Generally the probability that the proportion of persons with a college degree will differ from the population proportion by less than 5% is mathematically represented as

$P(| \^ p - p| < 0.05 ) = P( - (0.05 - 0.52 ) < \^ p < (0.05 + 0.52 ))$

Here $\^ p$ is the sample proportion of persons with a college degree.

$P( - (0.05 - 0.52 ) < \^ p < (0.05 + 0.52 )) = P(\frac{[[0.05 -0.52]]- 0.52}{0.02106} < \frac{[\^p - p] - p}{\sigma } < \frac{[[0.05 -0.52]] + 0.52}{0.02106} )$