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iren [92.7K]
2 years ago
8

According to a commercial, 4 out of 5 dentist recommend a certain brand of toothpaste. Suppose There are 120 dentist in your are

a. What is the expected number of dentist who recommend the brand? What is the standard deviation? Needing assistance with calculating the standard deviation please.
Mathematics
1 answer:
Genrish500 [490]2 years ago
3 0
4/5 recommend, so about 4/5(120) = 96 doctors recommend the brand.
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Evaluate the expression using the values in the left column to complete the table
egoroff_w [7]

Answer/Step-by-step explanation:

A. 4b + 3b

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4(4) + 3(4) = 16 + 12 = 28

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4(8) + 3(8) = 32 + 24 = 56

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4(10) + 3(10) = 40 + 30 = 70

Using b = 2

4(12) + 3(12) = 48 + 36 = 84

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Using x = 3

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3(7 - 2) = 3(5) = 15

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3(13 - 2) = 3(11) = 33

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Using a = 2

5(4(2) - 1) = 5(8 - 1) = 5(7) = 35

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Using y = 2

6(2) - 2(2) + 4 = 12 - 4 + 4 = 12

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6(3) - 2(3) + 4 = 18 - 6 + 4 = 18 - 2 = 16

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6(5) - 2(5) + 4 = 30 - 10 + 4 = 30 - 6 = 24

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6(10) - 2(10) + 4 = 60 - 20 + 4 = 60 - 16 = 44

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7 0
3 years ago
Use the box plot to answer the questions. What is the range of Charles’s scores? What is the median of Charles’s scores? What is
vekshin1

Box-plot describes 5 important data of the observations. We get following values for range, median and IQR as:

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  • The median of Charles' scores is 90
  • The IQR of Charles' scores is 8

<h3>How does a boxplot shows the  data points?</h3>

A box plot has 5 data description.

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The missing box plot is attached below for the given problem.

From the given data, we see that, the left and right whiskers are on  80 and 100 respectively.

The left and right limit of the box are on 85 and 93 respectively.

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Thus, we get:

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Learn more about box plot here:

brainly.com/question/1523909

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Awnser

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I’m not sure for y=x but for when x=6 he slope is undefined and there is no y-intercept
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