A student researcher wishes to examine the effectiveness of a statisticalwork laboratory on graduate students' overall understanding of application of
statistical analyses. The researcher administers a survey to 15 students who
are seated at the front of the laboratory. How could this study be improved?
Select all that apply.
A. Use an instrument to test statistical analysis understanding.
B. Select a random sample of students who go to the work
laboratory
c. Use a larger sample size.
D. Administer instruments to a group who does not go to the work
laboratory, as well.

Answers

Answer 1

Answer:

Answer:

B. Select a random sample of students who go to the work laboratory

Step-by-step explanation:

The best way to get acurate results is by selecting a random sample of students. If the students administers a survey to the students that are seated at the front of the laboratory he could get biased results.

The students that are seated in fron of the laboratory could obey to a certain characteristic (ie. They could be very applied students), which could definitely provide us with a different result.

The survey is just fine. We don't need any instrument to test statistical analysis understanding. Also, using a larger sample size of students seated in front of the laboratory won't make much difference. Finally, Administering instruments to a group who does not go to the work laboratory makes no sense. You can not measure effectiveness on people that don't assist to class.

Answer 2

Answer:

Select a random sample of students who go to the work laboratory

verified on a p e x

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There are 60 minutes in 1 hour.
So 1 minute is 1/60 of an hour.

The spacecraft covers 17,460 miles in the whole hour.
So it covers 1/60 of that 17,460 miles in each 1/60 of the hour.

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Answer:

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Step-by-step explanation:

George went to school for 216 days in a full year. If his attendance in 60%, find the number of days on which the school was opened.

Answers

Given:
days present = 216 days
percentage of presence = 60%

Find the total number of days the school was opened.

216 days is the part of a whole. 60% is the percentage of the part to the whole.

To get the whole, we need to divide the part by its percentage

216 ÷ 60% = 360 days

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Hi

216 days ⇒ 60%
x days ⇒ 100%

60x = 216·100
60x = 21600
x = 21600/60
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Answer: 360 days

A spinner has 4 equal-sized sections. To win the game, the pointer must land on a purple section.

Answers

Answer: 1/4

Step-by-step explanation:

10) 4n^2 - 12n + 9 = 0

Answers

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Step-by-step explanation:

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( 2 n + 3 )^ 2 = 0

Set 2 n + 3 equal to 0 and solve for n.

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The result can be shown in multiple forms.

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Mixed Number Form: n = − 1 1/2

in a cylinder cup, AB=5cm, BC= 12cm. AD is a straw that passes point A and C and CD= 2cm. the length of the straw is:

Answers

Answer:

17.13 cm.

Step-by-step explanation:

In the given scenario, we have a cylinder cup with points A, B, and C, and a straw AD that passes through points A and C. The measurements are as follows:

AB = 5 cm

BC = 12 cm

CD = 2 cm

We can use the Pythagorean theorem to find the length of the straw AD. The Pythagorean theorem states that in a right triangle, the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides.

In this case, AD is the hypotenuse, and AC and CD are the other two sides. We can write the Pythagorean theorem equation as:

AD^2 = AC^2 + CD^2

Given that AC is the sum of AB and BC:

AC = AB + BC

AC = 5 cm + 12 cm

AC = 17 cm

Now we can substitute the values into the Pythagorean theorem equation:

AD^2 = 17^2 + 2^2

AD^2 = 289 + 4

AD^2 = 293

Taking the square root of both sides to solve for AD:

AD = √293