3 years ago

The titanic was 885 feet long. How many meters is in 885?

Mathematics

2 answers:

frez [133]3 years ago

8 0

Answer:

269.748 m

Step-by-step explanation:

DerKrebs [107]3 years ago

6 0

Answer:
269.748 meters

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$n=(\frac{2.58(1000)}{50})^2 =2662.56 \approx 2663$

So the answer for this case would be n=2663 rounded up to the nearest integer

Step-by-step explanation:

We have the following info:

$ME = 50$ margin of error desired

$\sigma = 1000$ the standard deviation for this case

The margin of error is given by this formula:

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And on this case we have that ME =50 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

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The critical value for 99% of confidence interval now can be founded using the normal distribution. The significance is $\alpha=0.01$ . And for this case would be $z_{\alpha/2}=2.58$ , replacing into formula (b) we got:

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So the answer for this case would be n=2663 rounded up to the nearest integer

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