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vichka [17]
2 years ago
12

5 dollars for 2 cans of tuna

Mathematics
2 answers:
Lera25 [3.4K]2 years ago
5 0

Answer:

5 times 2=10 well i guess this was a joke right?

Step-by-step explanation:

Vinvika [58]2 years ago
4 0

Answer:

Step-by-step explanation:

Add together it would be...

$10.00 total

Each can costs...

$5.00 for each can

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Answer:

A sample size of 345 is needed so that the confidence interval will have a margin of error of 0.07

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.

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This is n when M = 0.07. So

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

0.07 = 2.81\sqrt{\frac{0.69*0.31}{n}}

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\sqrt{n} = \frac{1.2996}{0.07}

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(\sqrt{n})^{2} = (18.5658)^{2}

n = 345

A sample size of 345 is needed so that the confidence interval will have a margin of error of 0.07

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