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Alexxandr [17]
2 years ago
12

Two students were asked if they liked to read. Is this a good example of a statistical question? Why or why not?

Mathematics
1 answer:
professor190 [17]2 years ago
7 0

Answer:

Yes, this is a good statistical question because a variety of answers are given.

Step-by-step explanation:

A question can be called a good statistical question because of the variety of the answers it can bring to data. The answers to the same question will be different for different people.

Hence,

Yes, this is a good statistical question because a variety of answers are given ..

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How is the sum expressed in sigma notation? <br><br> 22 + 27 + 32 + 37 + 42 + 47
adelina 88 [10]

The sum expressed in sigma notation is \sum_{n=1}^{6} 5 n+17.

Solution:

Given series is 22 + 27 + 32 + 37 + 42 + 47.

Write it in the sequence form 22, 27, 32, 37, 42, 47.

First term of the sequence = 22

Common difference = 27 – 22 = 5

This is arithmetic sequence.

\text n^{th} term of the arithmetic sequence is

a_n=a_1+(n-1)d

\Rightarrow a_n=22+(n-1)5

\Rightarrow a_n=22+5n-5

\Rightarrow a_n=17+5n

\Rightarrow a_n=5n+17

In the given series number of terms is 6.

So n = 1 to 6.

Write n = 1 in the lower of the sigma and 6 in the top of the sigma.

\sum_{n=1}^{6} 5 n+17

The sum expressed in sigma notation is \sum_{n=1}^{6} 5 n+17.

5 0
3 years ago
Two rectangular properties share a common side. Lot A is 33 feet wide and 42 feet long.
s344n2d4d5 [400]

Answer:

The width of lot B is 11 feet, so option A is correct.

Step-by-step explanation:

Given:

  • Two rectangular properties share a common side.  
  • Lot A is 33 feet wide and 42 feet long.  
  • The combined area of the lots = 1,848 square feet.  

To find:

How many feet wide is Lot B?  

Solution:

we know that, area of a rectangle is length x breadth

Then area of lot A = 33 x 42 = 1386 square feet.

And area of lot B = width x 42

Now, we are given that, total area = 1848  

area of lot A + area of lot B = 1848  

1386 + width x 42 = 1848  

width x 42 = 1848 – 1386  

width x 42 = 462  

width =\frac{42}{462}

width = 11

Hence, the width of lot B is 11 feet, so option A is correct.

7 0
3 years ago
I need the answers to this. I have no clue at all how to do this!
Ber [7]

Answer:

Opens: Up

Maximum or minimum: Minimum is -4

Describe the translation: A vertical shift of 4 downwards


4 0
3 years ago
How much should you invest at 4% simple interest in order to earn $50 interest in 6 months
LenaWriter [7]
Simple interest formula
Interest = Pit = $50
P=principal (initial investment)
i=annual interest rate = 0.04
t=time in years = 6 months = 0.5 years

Substitute values,
$50 = P*0.04*0.5 
Solve for P
P=$50/(0.04*0.5)=$2500


4 0
3 years ago
Is the graph of the line x=4 vertical or horizontal?<br><br> A: vertical<br> B: horizontal
kirill [66]

Answer:

yes

Step-by-step explanation:

3 0
2 years ago
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