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ra1l [238]
3 years ago
5

Data from Ivy Tech's advising center shows the wait times as a normal distribution with the average as 20 min and a standard dev

iation as 5 min.
Using the empirical rule, what percent of students wait between 15 and 25 minutes?
Mathematics
1 answer:
fiasKO [112]3 years ago
8 0

9514 1404 393

Answer:

  68%

Step-by-step explanation:

According to the empirical rule, 68% of the distribution lies within 1 standard deviation of the mean.

Here, the mean is 20 and the standard deviation is 5. The bounds on 1 standard deviation from the mean are 20±5 = [15, 25]. This is precisely the interval of interest.

  68% of students wait between 15 and 25 minutes

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Answer:

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Step-by-step explanation:

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7 0
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A national study found that 44% of college students engage in binge drinking. Using the 68-95-99.7 rule to describe the sampling
WARRIOR [948]

Answer:

\bf \sigma = 0.0351

Step-by-step explanation:

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  = 0.44

Population standard deviation proportion,

\sigma = \sqrt{\frac{\pi \times (1 - \pi)}{n}}\\\\\implies \sigma= \sqrt{\frac{0.44 \times (1 - 0.44)}{200}}\\\\\implies\bf \sigma = 0.0351

4 0
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Step-by-step explanation:

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