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VMariaS [17]
3 years ago
7

Sandra has developed a program designed to increase reading comprehension scores in 6th graders. She randomly selects three stud

ents and has them participate in her program. When she compares the mean score from the students who completed her program to three students who did not participate in the program, she finds no significant difference between their mean scores. What is most likely the reason for the non-significant finding
Mathematics
1 answer:
Mandarinka [93]3 years ago
8 0

Answer:a small sample size

Step-by-step explanation:

From the information given in the question, we are informed that Sandra developed a program that was designed to increase reading comprehension scores in 6th graders and she then randomly selects three students and has them participate in her program.

After comparing the mean score from the students who completed her program to three students who did not participate in the program, she finds no significant difference between their mean scores, it should be noted that the reason for this will be because the sample size is small.

If a large sample size was used, this could have been different as thsi could result in a significant difference between their mean scores.

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What is 3/22 step by step?
Anna11 [10]

Answer:

Step-by-step explanation:

First you would see how many times 3 would go into 22 and it would be 7 with a remainder of 1. Then you would do 7 times 3 which is 21. And 22 minus 21 is 1. Then your answer would be 7 with a remainder of 1. If you don't want a remainder, and you want a decimal then you would add a decimal point after the 22 and then add a 0. You would bring down the zero and then  the remainder of one would be 10 then you would see how much 3 goes into 10, and it only goes 3 times. Your answer would be 7.3 with a remainder of 1, If you keep going you will see it becomes a repeating decimal. *Hope it helped*

7 0
4 years ago
Your friend decides to flip a coin repeatedly to analyze whether the probability of a head on each flip is 1/2. He flips the coi
Phoenix [80]

Answer:

Step-by-step explanation:

Given that a friend flips a coin 10 times and observes head 7 times.  So he concludes Probability of head =0.1

This is wrong because

i) Just making 10 trials and coming to conclusion is wrong.  Trials should be large to get accurate estimate

ii) The way he threw the coin may be biased so differrent persons should flip and get results for larger trials

iii) External influences such as air, any other disturbance is not considered here.

To avoid all these sampling fluctuations number of trials should be increased with different situations and times.

6 0
3 years ago
A square pyramid is 6 feet on each side. The height of the pyramid is 6 feet. What is the total area of the pyramid?
NARA [144]

Answer:

It is B.   (36√5 + 36) ft^2.

Step-by-step explanation:

Total area = area of the base +  4 * area of the triangular side.

The slant height of a triangular side =  √(6^2 + 3^2)

= √45

= 3√5

The area of this side = 3 * 3 √5

= 9√5.

Therefore the total area of the pyramid

=  6^2 + 4*9√5

= (36 + 36√5) ft^2.

3 0
4 years ago
Which angle forms a y-coordinate on a unit circle of /~3/2 (square root of 3 over 2)
mixer [17]

Answer:

\theta=60\degree

Or

\theta=\frac{\pi}{3}


Step-by-step explanation:

We want to find the angle which forms a y-coordinate of \frac{\sqrt{3} }{2}

on the unit circle.


The y-coordinate on the unit circle is given by \sin(\theta).


This implies that  \sin(\theta)=\frac{\sqrt{3} }{2}


\Rightarrow \theta=\sin^{-1}(\frac{\sqrt{3} }{2})


\Rightarrow \theta=\sin^{-1}(\frac{\sqrt{3} }{2})


\Rightarrow \theta=60\degree

Or

\theta=\frac{\pi}{3}



3 0
3 years ago
What’s the value of x in 3x - 10 = 11
Lina20 [59]

First add 10 to both sides:

3x-10=11+10

3x=21

Divide three by both sides to get x by itself:

3x/3=21/3

x=7


6 0
3 years ago
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