Mathematics, 05.07.2020 01:01 imhereforas

Using the estimate from the 2013 YRBS, we calculate a standard error of 0.020. Since the data allows the use of the normal model, we can determine an approximate 95% confidence interval for the percentage of all U. S. public high school students who are obese. Which interval is the approximate 95% confidence interval?a. 0.097 to 0.177b. 0.117 to 0.157c. 0.110 to 0.190d. 0.013 to 0.170

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Answer from: vanessa7676

The right answer is

c) 0.110 to 0.190

Step-by-step explanation:

The question is incomplete:

Teen obesity: The 2013 National Youth Risk Behavior Survey (YRBS) reported that 13.7% of U.S. students in grades 9 through 12 who attend public and private school were obese. Suppose that 15% of a random sample of 300 U.S. public high school students were obese.

Kann, L., Kinchen, S., Shanklin, S.L., Flint, K.H., Hawkins, J., Harris, W.A., et. al.(2013) YRBS 2013 Report. http://www.cdc.gov/healthyyouth/yrbs/index.htm

Using the estimate from the 2013 YRBS, we calculate a standard error of 0.020. Since the data allows the use of the normal model, we can determine an approximate 95% confidence interval for the percentage of all U.S. public high school students who are obese. Which interval is the approximate 95% confidence interval?

a) 0.097 to 0.177

b) 0.117 to 0.157

c) 0.110 to 0.190

d) 0.013 to 0.170

We have to calculate a 95% confidence interval for the proportion.

The sample size is n=300 and the sample proportion is p=0.15.

The standard error of the proportion is calculated from the 2013 YRBS and has a value of σp=0.020.

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

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

$MOE=z\cdot \sigma_p=1.96 \cdot 0.020=0.040$

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

$LL=p-z \cdot \sigma_p = 0.150-0.040=0.110\\\\UL=p+z \cdot \sigma_p = 0.150+0.040=0.190$

The 95% confidence interval for the population proportion is (0.110, 0.190).

Answer from: Quest

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.

Answer from: Quest

D. i think it is the savings

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Using the estimate from the 2013 YRBS, we calculate a standard error of 0.020. Since the data allows...

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