How do I do 6765 divided by 55 in long division

Mathematics

2 answers:

3241004551 [841]3 years ago

8 0

You need to ask your teacher for any help and to evaluate and double check each step.

amm18123 years ago

6 0

6765/55 55 goes in to 67 once so write 1 and do 67-55=12 and then add a 6 so its 126 then 55 goes in to 126 twice so write 2 and do 126-110 and u get 16 then add 5 and u get 165 and 55 goes in to 165 3 times so the answer is 123

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The state education commission wants to estimate the fraction of tenth grade students that have reading skills at or below the e

Korolek [52]

Answer:

A sample of 499 is needed.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error is given by:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

In this question, we have that:

$\pi = 0.21$

90% confidence level

So $\alpha = 0.1$ , z is the value of Z that has a pvalue of $1 - \frac{0.1}{2} = 0.95$ , so $Z = 1.645$ .

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% confidence level with an error of at most 0.03

We need a sample of n, which is found when $M = 0.03$ . So