The state education commission wants to estimate the fraction of tenth grade students that have reading skills at or below the eighth grade level. In an
earlier study, the population proportion was estimated to be 0.21.
How large a sample would be required in order to estimate the fraction of tenth graders reading at or below the eighth grade level at the 90 %
an confidence level with an error of at most 0.03? Round your answer O up to the next integer.

heyyy

step-by-step explanation:

6 hours 48 min

step-by-step explanation:

68÷5=13.6

13.6×30=408min=6 hours 48 min.

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a and c

step-by-step explanation:

the answer is:

the answer is:

to solve the problem, we need to remember the quotient of power property, it's defined by the following relation:

if we have a quotienf of powers that have the same base, we need to keep the same base and subtract the exponent of the denominator power to the exponent of the numerator power.

so, we are given the expression:

then, calculating we have:

hence, the answer is:

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