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vagabundo [1.1K]
3 years ago
15

Which type of study best describes the following research most likely to be done? A teacher wants to know how fast all her stude

nts for a particular period can complete a multiplication quiz to check their mental math abilities. So, all of her students are tested on a computer and the time of each and every student is recorded.
A Experimental Study

B Observational Study
C Census

D Sampling
Mathematics
1 answer:
Yakvenalex [24]3 years ago
6 0

Census

_____________________________________

<em>*100% CORRECT ANSWERS</em>

Question 1

Which type of study best describes the following research most likely to be done?

A researcher is testing out a brand new type of safety suit for fires and is trying to test the maximum threshold of the suit.

Simulation Study  

Question 2

Which type of study best describes the following research most likely to be done?

A test is being conducted on a new medicine that is supposed to heal cuts faster. One group is given the actual medicine in a gel type of ointment to apply to the cuts. The second group is given just regular Vaseline that looks like the medicine but has not benefit to put on the cut. The results are then compared.  

Experimental Study  

Question 3

Which type of study best describes the following research most likely to be done?

A researcher is wanting to research the after effects of plant growth after a nuclear reactor meltdown and decides to study plants within a 50 mile radius of the  power plant that had a catastrophic melt down in 2011.  

Observational Study  

Question 4

Which type of study best describes the following research most likely to be done?

A study is being conducted by an insurance actuary and he wants to determine how often American teen drivers that are on the honor roll get into wrecks.  

Sampling  

Question 5

Which type of study best describes the following research most likely to be done?

A teacher wants to know how fast all her students for a particular period can complete a multiplication quiz to check their mental math abilities. So, all of her students are tested on a computer and the time of each and every student is recorded.  

Census

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From a point on the ground 47ft from the base of a tree, the angle
Orlov [11]

Answer:

  33 ft

Step-by-step explanation:

In a diagram of the geometry, you see that the angle of elevation is opposite the triangle leg representing the tree height, and is adjacent to the triangle leg representing distance from the tree.

The tangent ratio relates these lengths to the angle:

  Tan = Opposite/Adjacent

  Opposite = Adjacent×Tan

  tree height = (47 ft)tan(35°) ≈ 33 ft

The height of the tree is about 33 feet.

3 0
4 years ago
If you pick a card at random from a well shuffled deck, what is the probability that your card is NOT a spade or a king
Sergio [31]
How many cards are in a deck??
52

Now subtract the 
 13spades + 3 kings = 16

what is left
36 left
 
want            36
_____      ---------
total             52

answer:   36/52
5 0
4 years ago
Some species of hummingbirds appear to hover in mid-air by flapping their tiny wings 80 times per second. How many times per min
astraxan [27]
So the way to answer this question is to convert minute to seconds
We know that a minute has 60 seconds
The problem states that the hummingbird flaps its wings 80 times per second
So 80 times per second x 60 seconds = 4800 times would be the final answer.
3 0
3 years ago
Determine the slope of the line.
Akimi4 [234]

Answer:

2

Step-by-step explanation:

→ Find 2 points from the line

( 0 , 6 ) and ( - 3 , 0 )

→ Find the change in y coordinates

0 - 6 = -6

→ Find the change in x coordinates

-3 - 0 = -3

→ Divide the 2 results

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7 0
2 years ago
H(x)=4/x-5 determine for each x-value whether it is in the domain of h or not
Colt1911 [192]

Answer:

Simplify:

53

Step-by-step explanation:

Simplify:

53

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3 years ago
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