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Blababa [14]
4 years ago
15

A professor computing the sample average exam score of 20 students and using it to estimate the average exam score for the 1,500

students taking the exam is an example of inferential statistics.
True / False.
Mathematics
1 answer:
yarga [219]4 years ago
6 0

Answer:

True, It is a example of inferential statistics.

Step-by-step explanation:

There are two types of statistics which are:

  1. Inferential Statistics
  2. Descriptive Statistics

In Inferential Statistics we describe the valuable characteristic of the population using a sample of data.

Here, Since the professor is estimating the average score of 1,500 students using an average score of 20 students. So it is Inferential Statistics.

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Josie hikes at 2 and 3/4 miles per hour. How long will it take her to hike 9 and 5/8 miles?
Leviafan [203]
First, let's convert the givens to decimals to make calculations easier:
2 (3/4) = 2.75
9(5/8) = 9.625

We are given that:
Josie can hike 2.75 miles in one hour.
To know the time that Josie would take to hike 9.625 miles, we will simply do cross multiplication as follows:
2.75 miles ..........> 1 hour
9.625 miles .............> ?? hours

Time = (9.625*1) / (2.75) = 3.5 hours
6 0
3 years ago
What are the solutions of x^2-2x+26=0?
zhuklara [117]

I think it's 2+4×5=6 or 7+910=10

7 0
3 years ago
Read 2 more answers
What is the volume of the triangular prism? Round to the nearest tenth.
kramer

Answer:

the volume of the triangular prism is 1,185.6  in³

Step-by-step explanation:

To find the volume of these triangular prism, we will, first, find the area of the triangle then multiply by the length

Area of triangle = \frac{1}{2} × b×h

From the diagram ,the height of the triangle  is given to be 10.4 in and the base is given to be 12 in.

We will now proceed to insert the values into the formula;

                 Area of triangle  = \frac{1}{2} × b×h

                                              = \frac{1}{2} × 12×10.4

                                             

                                                = \frac{1}{2} × 124.8

                                                 =62.4

Area of triangle is 62.4 in²

From the diagram is given to be 19 in

Volume of triangular prism = area of triangular prism × l

                                              =62.4 in²   ×    19 in

                                              =1,185.6  in³

Therefore the volume of the triangular prism is 1,185.6  in³

                                           

                           

5 0
3 years ago
Using the function f(x) = 2x + 7 find the following: (show your work)<br><br> f(2)<br><br><br> f(7)
denpristay [2]
Replace the x with 2: f(2)=2*2+7=4+7=11
replace the x with 7: f(7)=2*7+7=14+7=21
8 0
3 years ago
Read 2 more answers
Solve for m&lt;c. (Enter your answer as a whole mumber)​
kupik [55]

2y + 4 + x = 90

2y + 4 + 3y + x = 180

5y + x + 4 = 180

x = 176 - 5y

2y + 4 + (176 - 5y) = 90

-3y + 180 = 90

-3y = -90

y = 30

x = 176 - 5(30)

x = 26 degrees

Hope this helps! :)

4 0
3 years ago
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