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3 years ago

What’s 45 divided by 14.04

Mathematics

1 answer:

Vladimir79 [104]3 years ago

8 0

Answer:

3.205

Step-by-step explanation:

convert the decimal number to a fraction

$45 \div \frac{351}{25}$

To divide by fraction, multiply by the reciprocal of that fraction

$45 \times \frac{25}{351}$

Reduce the numbers with the greatest common divisor 9

$5 \times \frac{25}{39}$

Calculate the product

$\frac{125}{39}$

Now turn it to a decimal which will be

$3.20513$

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Answer:

The reasonable range for the population mean is (61%, 75%).

Step-by-step explanation:

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One of the best interval estimate of population proportion is the 95% confidence interval for proportion,

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Given:

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The critical value of <em>z</em> for 95% confidence level is:

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$=0.68\pm1.96\sqrt{\frac{0.68(1-0.68)}{150}}\\\\=0.68\pm 0.0747\\\\=(0.6053, 0.7547)\\\\\approx (0.61, 0.75)$

Thus, the reasonable range for the population mean is (61%, 75%).

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