Which of the following options have the same value as 65% percent of 20?
1 answer:
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Step-by-step explanation:
(5.6) × 1/8
Here the unit fraction is 1/8
multiply 5.6 times 1
so its 5.6. then divide the decimal by 8
we know that 8 times 7 is 56
so 56 divide by 8 is 7
we have decimal point 1 number to the left
so we move decimal point 2 place left
Hence 5.6 divide by 8 is 0.7
Answer: 0.7
Answer:
(a) The point estimate for the population proportion <em>p</em> is 0.34.
(b) The margin of error for the 99% confidence interval of population proportion <em>p</em> is 0.055.
(c) The 99% confidence interval of population proportion <em>p</em> is (0.285, 0.395).
Step-by-step explanation:
A point estimate of a parameter (population) is a distinct value used for the estimation the parameter (population). For instance, the sample mean is a point estimate of the population mean <em>μ</em>.
Similarly, the the point estimate of the population proportion of a characteristic, <em>p</em> is the sample proportion .
The (1 - <em>α</em>)% confidence interval for the population proportion <em>p</em> is:
The margin of error for this interval is:
The information provided is:
(a)
Compute the point estimate for the population proportion <em>p</em> as follows:
Point estimate of <em>p</em> = = 0.34
Thus, the point estimate for the population proportion <em>p</em> is 0.34.
(b)
The critical value of <em>z</em> for 99% confidence level is:
*Use a <em>z</em>-table for the value.
Compute the margin of error for the 99% confidence interval of population proportion <em>p</em> as follows:
Thus, the margin of error for the 99% confidence interval of population proportion <em>p</em> is 0.055.
(c)
Compute the 99% confidence interval of population proportion <em>p</em> as follows:
Thus, the 99% confidence interval of population proportion <em>p</em> is (0.285, 0.395).