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2 years ago

15

34 students in Mr. Jones’s math class passed the final exam. There are 40 students in his class total. What Percent of students

passed?

2 answers:

solniwko [45]2 years ago

8 0

Answer:

85%

Step-by-step explanation:

faltersainse [42]2 years ago

5 0

Answer:

85%

Step-by-step explanation:

$100\% > 40 \\ 40\div 40 \\ \frac{100\%}{40} > 1 \\ \frac{100\%}{40} \times 34 = 85\%$

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3 years ago

Below are survival times (in days) of 13 guinea pigs that were injected with a bacterial infection in a medical study:

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Outliers are data that are relatively far from other data elements.

The dataset has an outlier and the outlier is 120

The dataset is given as:

91 83 84 79 91 93 95 97 97 120 101 105 98

Sort the dataset in ascending order

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<h3>The lower quartile (Q1)</h3>

The Q1 is then calculated as:

$Q1 = \frac{N +1}{4}th$

So, we have:

$Q1 = \frac{13 +1}{4}th$

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<h3>The upper quartile (Q3)</h3>

The Q3 is then calculated as:

$Q3 = 3 \times \frac{N +1}{4}th$

So, we have:

$Q3 = 3 \times \frac{13 +1}{4}th$

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$Q3 = 10.5th$

This is the average of the 10th and the 11th element.

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<h3>The interquartile range (IQR)</h3>

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$IQR = Q_3 -Q_1$

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Also, we have:

$IQR(1.5) = 12 \times 1.5$

$IQR(1.5) = 18$

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The lower and the upper outlier range are calculated as follows:

$Lower = Q_1 - IQR(1.5)$

$Lower = 87.5- 18$

$Lower = 69.5$

$Upper = Q_3 + IQR(1.5)$

$Upper = 99.5 + 18$

$Upper = 117.5$

120 is greater than 117.5.

Hence, the dataset has an outlier and the outlier is 120

Read more about outliers at:

brainly.com/question/9933184

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