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Readme [11.4K]
2 years ago
15

At the beginning of the school year, each student's height was measured Ryans's height was measured 48.2 inches his friend Sara

was 2.05 inches shorter than their friend Joel had measured 3 inches taller than Sara. what were the heights of Sara and Joel?
FIRST 3 PEOPLE WHO ANSWER GETS BRAINLESS........
Mathematics
1 answer:
kirill115 [55]2 years ago
4 0

Answer:

Step-by-step explanation:

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A random sample of 70 printers discovered that 25 of them were being used in small businesses. find the 95% limit for the popula
kvasek [131]

Answer:

The sample proportion of printers used in small business is:

\hat{p}=\frac{25}{70}=0.3571

The 95% confidence interval for the population proportion of printers that are used in small businesses is:

\hat{p} \pm z_{\frac{0.05}{2}} \sqrt{\frac{\hat{p}(1-\hat{p})}{n} }

Where:

z_{\frac{0.05}{2}}=1.96 is the critical value at 0.05 significance level

\therefore 0.3571 \pm 1.96 \sqrt{\frac{0.3571(1-0.3571)}{70} }

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7 0
3 years ago
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