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Molodets [167]
3 years ago
14

1. Members of a research team are considering three studies related to sleep and learning. The first study involves comparing th

e scores on a post-study test of learning from two groups of randomly chosen adults, with one group getting at least 7 hours of sleep per night for a week and the other group getting at most 6 hours
of sleep per night for a week. A second study involves asking a random sample of students at a large university to report the average number of hours of sleep they get each night and their college grade point average. A third study involves asking a random sample of high school students in a large school district whether they feel they get enough sleep to stay alert throughout the school day.
Mathematics
1 answer:
Aleksandr [31]3 years ago
7 0

The question is incomplete. The complete question is :

Members of a research team are considering three studies related to sleep and learning. The first study involves comparing the scores on a post-study test of learning from two groups of randomly chosen adults, with one group getting at least 7 hours of sleep per night for a week and the other group getting at most 6 hours  of sleep per night for a week. A second study involves asking a random sample of students at a large university to report the average number of hours of sleep they get each night and their college grade point average. A third study involves asking a random sample of high school students in a large school district whether they feel they get enough sleep to stay alert throughout the school day.

Which study appears to look for an association between two variables without actively manipulating either one. What are those variables ?

Solution :

The second study in the context is involved in asking for a random sample of the students at an university to provide a report the average hours of sleep that everybody get each night and also the grade point of their college appears for association between these two variables without actively changing either of one.

These variables are the grade point average of the students and the numbers of hours of sleep.

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5. If a rectangle has a perimeter of 10 feet and is 2 feet wide what's the area?
Fudgin [204]

Answer:

20

Step-by-step explanation:

What you would do is multiply 10 and 2 and get 20

Please mark me brainliest

5 0
3 years ago
If 60 equals twice a number added to itself, find the number.
AlladinOne [14]
Okay. 60 equals twice the number added to itself. That would be 30, because 60 is twice of 30 and 30 added to itself is 60. The number is 30.
7 0
4 years ago
A 20 foot ladder rests against a building 15 feet from the floor. How far does the ladder extend from the base of the wall? What
svlad2 [7]
The ladder extends 13.2 feet from the wall

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8 0
3 years ago
Which shows a statistical question regarding a data set? A) What is your favorite color? B) What is the total number of eggs in
Gennadij [26K]

Answer: The correct answer is option D: What is the height of the tallest player on a team?

Step-by-step explanation: In statistics generally, you deal with collection of data among other things. In collecting data, for the purpose of arranging and analyzing, you would need to collect data that can be varied, because the variability of the data collected would help in making an analyses that can be used for other similar data. So asking for someone's name for example is not a statistical question, because the answer is as simple as "My name is Brainly."

Hence, asking for someone's favorite color is not a statistical question. The answer is simple and does not require collecting different sets of data.

Asking for the total number of eggs in 5 dozen is a not statistical question because we already know the answer and there is no variability of the data that would be presented in the answer. Each dozen contains the same number of eggs. So its as good as asking what is the total number of eggs in a dozen, or in 10 dozens, and so on.

The total number of ounces in a gallon is also not a statistical question, because just like in option B above, there is no variability of the data that would be collected. The answer is pretty straight forward and that is 128 ounces (of liquid/fluid). There is no variability that would now give rise to analyses  of data.

The height of the tallest player on a team is definitely  a statistical question, because, <u>there are several players on a team, and their heights normally cannot be same</u>. So asking for the height of the tallest player simply implies that some are taller than the others, and at least one player is taller than all other players. So there will be variability of data in this particular instance, and the data analyst would have different sets of data (players' heights) available to him/her which can be used to draw conclusions

6 0
3 years ago
I need help on this I don’t know
slega [8]

Answer:

6

Step-by-step explanation:

In the y row, it decreases by 1 each time, so 1 decreased from 7 is 6.  To plot this, we take the x and y values from each column and graph it.  For example, the first row would be a point at (3, 8).

6 0
3 years ago
Read 2 more answers
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