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poizon [28]
3 years ago
14

As part of the National Health and Nutrition Examination Survey, subjects were asked how long they slept the preceding night, an

d the following times (hours) were reported: 8, 7, 5, 7, 4, 7, 6, 7, 8, 8, 8, 6 How would you describe the mode?
Mathematics
1 answer:
Alex Ar [27]3 years ago
4 0

Answer:

Mode = 7,8

Step-by-step explanation:

We are given the following data set:

8, 7, 5, 7, 4, 7, 6, 7, 8, 8, 8, 6

This is the data for number of hours slept the preceeding night.

We have to find the mode of the data.

It is described as the most frequent observation in the sample.

Sorted Data:

4, 5, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8

Both observation 8 and 7 repeated 4 times each.

Thus, the mode of data is 7 and 8.

Thus, it is a bi-modal data.

7 hours and 8 hours are the most frequent number of hours of sleep preceeding night.

You might be interested in
The sum of two numbers is 98. One number is 76 less than the other.
Lady bird [3.3K]

Answer:

Step-by-step explanation:

1. n + y = 98

2. n = 76 - t

7 0
3 years ago
Read 2 more answers
21. Andre grew a plant for a science experiment. At the end of his
kotegsom [21]

Answer:

he answer is 140 minutes to plant 14 saplings.

Step-by-step explanation:

30 divided by 3=10

so it takes 10 minutes to plant one sapling.

10x14=140 so this is how you get your answer. im 99% sure

4 0
3 years ago
Read 2 more answers
In ΔBCD, the measure of ∠D=90°, the measure of ∠C=77°, and CD = 41 feet. Find the length of BC to the nearest foot.
OLga [1]

Answer:

182 ft

Step-by-step explanation:

When you are not given a diagram, always draw one for yourself (see diagram).

When you have a right triangle (triangle with 90° angle), you can use the trigonometry ratios, You can remember them using SohCahToa. It is read like this:

<u>s</u>inθ = <u>o</u>pposite/<u>h</u>ypotenuse           Soh

<u>c</u>osθ = <u>a</u>djacent/<u>h</u>ypotenuse          Cah

<u>t</u>anθ = <u>o</u>pposite/<u>a</u>djacent                Toa

"θ" means the angle of reference (the angle you are talking about).

We are looking for the length of BC, which is the <u>hypotenuse</u>. I labelled it "d" (lowercase D) because it is opposite to ∠D.

We know ∠C = 77°. This will be our angle of reference (replace θ).

The side we know is DC, also known as "b" (lowercase B) because it's opposite to ∠B. "b" is the <u>adjacent</u> side when θ = C because "b" is touching ∠C.

Take the general trig. formula that has <u>hypotenuse</u> and <u>adjacent</u>: (cosine ratio)

cosθ = adjacent/hypotenuse

Substitute the variables specific for this problem.

cosC = b/d

Substitute the values you know.

cos77° = (41 ft) / d

Isolate "d" to the left side

dcos77° = d*\frac{41ft}{d}     Multiply both sides by "d"

dcos77° = 41 ft                          

dcos77° / cos77° = 41 ft / cos77°        Divide both sides by cos77°

d = 41 ft / cos77°                      Input into calculator

d = 182.261874....... ft           Unrounded answer

d ≈ 182 ft                       Rounded to nearest foot (whole number)

Remember d = BC. It's often easier to use one letter for calculations.

Therefore the length of BC is about 182 feet.

8 0
3 years ago
10 % off the regular price. what is the discount amount any price?
zloy xaker [14]

Answer:

Not really 100% sure how to answer this, but if you would like to find the price of any item 10% off, you would just multiply the price by 0.9

EX: item cost $100

$100 x 0.9 = $90

Meaning the price of the item after the discount is applied would be $90

6 0
3 years ago
What is a complex Fraction? <br> I forgot. Sorry.
ahrayia [7]

Answer:

it's when the denominator and numerator or both contain fractions

Step-by-step explanation:

like 4/(6/18) 4 is the numerator and 1)2 is the denominator hope I helped have a wonderful day

3 0
3 years ago
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