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aleksandrvk [35]
3 years ago
14

What is 21/45 simplified?

Mathematics
1 answer:
baherus [9]3 years ago
3 0
21÷3=7
45÷3=15
this means that 21/45 simplified is 7/15
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Of 150 adults selected randomly from one town, 30 of them smoke. Construct a 99% confidence interval for the true percentage of
anyanavicka [17]

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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 interval 1-\alpha, we have the following confidence interval of proportions.

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99% confidence interval

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The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.20 + 2.575\sqrt{\frac{0.20*0.80}{150}}{119}} = 0.2841

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2 years ago
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Answer:

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7 0
3 years ago
Read 2 more answers
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