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NARA [144]
3 years ago
11

Professor Green is interested in determining the average SAT score for the entire population of individuals who took the SAT. Sh

e wants to know how her class compares to the population of students who took the SAT. She finds that the average SAT score for the population is 1000. Is this score an example of a descriptive or an inferential statistic?
Mathematics
1 answer:
Dvinal [7]3 years ago
7 0

Answer:

Descriptive statistics

Explanation:

The population average is a descriptive statistic. It informs about how the population looks like, in this case, the population looks like having a average of 1000.

If, using her class's average where to infer the population average that is inferential statistic. But that is not the case

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James and Lin got married and got new jobs. Lin earns $3100 more per year than James. Together they earn $81,980. How much does
Bumek [7]

Answer:

The earning to James per year is $ 39,440

The earning of Lin per year is $ 42,540  .

Step-by-step explanation:

Given as :

The total earning of James and Lin together = $ 81,980 per year

The earning of Lin is $ 3100 more per year than James

Let The earning of James = $ J

And The earning of Lin = $ J + $ 3100

So, According to question

The total earning of James and Lin together = $ 81,980 per year

Or, The earning of Lin +  The earning of James  = $ 81,980 per year

Or,  $ J + $ 3100 + $ J  = $ 81,980 per year

or, 2 $ J = $ 81,980 - $ 3100

Or,  2 $ J = $ 78880

∴ J = \frac{78880}{2}

I.e The earning to James per year = $ 39,440

And  The earning of Lin per year = $ 34,440 + $ 3100 = $ 42,540

Hence, The earning to James per year is $ 39,440

And The earning of Lin per year is $ 42,540  . answer

7 0
3 years ago
A garden is rectangular with an area of 6/7 square miles. If the length of the garden is 3/5 miles, what is its width?
Dafna11 [192]

Answer:

Step-by-step explanation:

Area= length x width

area=6/7, length=3/5, width=?

6/7=3/5 x width

6/7 divided by 3/5= 6/7 x 5/3 (you have to multiply by the recipricol, or flip the fraction.)

6/7 x 5/3=30/21= 1 3/7=width

7 0
3 years ago
Nancy is making cookies for a bake sale. She needs a total of 4 pounds of chocolate chips. She has a 28-ounce bag of chocolate c
Westkost [7]
How many ounces are in a pound? 16! SO 16 times 4 = 64.  So Nancy needs 64 ounces in all.  So 28 plus 10 = 38 that's still not enough, so lets add some more 38 plus 10 = 48 still not enough, add some more 48 plus 10 plus 10 = 68.  So lets add up how many bags we need.  So in all with her 28 that she already has, we need 4 bags.
4 0
3 years ago
Zipora wants to construct a triangle that has the following angle measures: 50°, 75°, and 55°. How many triangles can she make?
Alborosie
As sum of all angles of triangle equal to 180 degrees.
First we have to add the angles.
50+75+55
=50+130
=180 degrees

Answer: Zipora can construct exactly one triangle.
4 0
3 years ago
Read 2 more answers
I️ need to find the answer
kolbaska11 [484]
(a) m∠RQS = (1/2)m∠QPR = 37°

(b) m∠QPR = m(arc QR) = 74° . . . . . an arc has the same measure as its central angle
8 0
3 years ago
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