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Neko [114]
3 years ago
15

The participants in a research study self-report their sleep quality levels by choosing the response option that best characteri

zes their average sleep quality per night from the following response options: 1 = extremely low sleep quality, 2 - very low sleep quality, 3 - low sleep quality, 4 = extremely high sleep quality. Which measurement scale is being used to classify sleep quality?
Mathematics
1 answer:
Bad White [126]3 years ago
6 0

Answer:

This is a Categorical variable and the measurement scale is ordinal scale.

Step-by-step explanation:

The measurement scale that is being used to classify sleep is the ordinal measurement. In this question, the variable that is called sleep quality is a categorical variable. categorical variables are variables that have the data representing groups. sleep quality has been given this categorical order extremely low very low low and extreme high.

The ordinal scale is a scale that denotes order it has all variables in a specific order.

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20 POINTS! Please look at the attached image!
Ira Lisetskai [31]

Answer:

a) 5^4 / 5^2, 5^2

b) 7^3 /  7^3, 7^0=1

c) 8^7/8^4, 8^3

Step-by-step explanation:

A quotient of two powers is basically the powers before its simplified. So for a 5 x 5 x 5 x 5 is 5 being multiplied by itself 4 times divided by 5 x 5 which is 5 being multiplied by itself 2 times. So this leads us to the conclusion that 5^4/5^2 for the quotient of two powers. Then using the rules of powers when dividing powers you subtract so in this case 4-2 is 2. So the answer is 5^2 for single power. The other problems are basically the same as well, just different numbers.

b) (7 x 7 x 7)/ (7 x 7 x 7)= 7^3/7^3=7^0=1

c)(8 x 8 x 8 x 8 x 8 x 8 x 8)/(8 x 8 x 8 x 8)= 8^7/8^4= 8^3

8 0
3 years ago
Read 2 more answers
Formula: A=P(1+r/n)^nt
Margarita [4]

Answer:

A=10,000(1+.02/12)^4*t

Step-by-step explanation:

First off u need to know how many years to get the answer but for the rest:

P- is principle and is the amount you are starting with, in this case 10,000.

You can either use 1+ or 1- this depends on wheather the amount is increasing or decreasing

Increasing: 1+ ; Decreasing: 1

(The problem already has it for you)

R- is the rate, here you take the percentage and move the decimal twice to the left. In this problem 2% moved to the left is .02.

N- Depends on what the problems says

Quarterly- 4 (cuz it means 4)

Daily- 365 (Number of days in a year)

Weekly- 52 (Number of weeks in a year)

Monthly- 12 (Number of months in a year)

Yearly- 1 ( One year)

Finally you square the number of years by the N.

7 0
3 years ago
Jacques, an artisan cheese maker, collects data on every step of the cheese-making process for each batch he makes. Jacques noti
NISA [10]

Answer:

The information is  

  The daily temperature of the shop increases while the  pH of the cheese decreases

Step-by-step explanation:

From the question we are told that

  The  correlation between the daily high temperature and the pH of the cheese to be −0.64

Generally the  information this negative correlation provides a about the relationship between the daily high temperature and the pH of the cheese is that as the daily temperature of the shop increases that pH of the cheese decreases

5 0
3 years ago
What is the value of x?<br><br><br><br> Enter your answer in the box.<br> x =
Ierofanga [76]

3x + 50 = 6x -10

add 10 to each side

3x +60 = 6x

subtract 3x from each side

60 = 3x

x = 60/3 = 20

x = 20

7 0
3 years ago
Which of the following points does not lie on the line y = -2x +5?
igor_vitrenko [27]

Answer:

C and E are not on the line.

Step-by-step explanation:

Just substitute for the x and the y and see which ordered pair fits and which does not:

If Left side of the equation = right side then the point fits.

A.   y = -3

-2x+5 = -2(4) + 5 = -3  So A is on the line

B. y = 9

-2(-2) + 5 = 9 So this point does lie on the line.

C. y = 1

-2(3) + 5 = -1   No.

D. y = 7

-1(-1) + 5 = 7  YES.

E. y = 1

-2(1) + 5 = 3 NO.

6 0
3 years ago
Read 2 more answers
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