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Arturiano [62]
3 years ago
12

Construct a​ 95% confidence interval for the population​ mean, mu. Assume the population has a normal distribution. A sample of

25 randomly English majors has a mean test score of 81.5 with a standard deviation of 10.2. A. ​(77.29, 85.71) B. ​(66.35, 69.89) C. ​(56.12, 78.34) D. ​(87.12, 98.32)
Mathematics
1 answer:
blagie [28]3 years ago
3 0

Answer:

reeeeeeeeeeeee

Step-by-step explanation:

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What's the equation of a circle whose diameter is 24 and whose center is at the origin
jekas [21]

Answer:

The standard form of the equation of a circle is,

                       (x - h)² + (y - k)² = r²

where the center is at (h, k) and its radius is r. Not sure what the equation would be sorry.

Step-by-step explanation:

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3 years ago
Nine less than a number is no more than 8 and is no less than 3
Fittoniya [83]

X<17, if i got it correct

7 0
2 years ago
Read 2 more answers
Please help!!! i need to show work too!!!
Verizon [17]

Answer:

1. 7/10, 2. 25, 3. 1/4 4. 4. 3/5, 5. A

Step-by-step explanation:

1.  Make a fraction with the total number of cards at the bottom (60) and all the cards that are not green (aka yellow and blue) on top (42). Then simplify the fraction 42/60 by dividing both terms by 6 to get 7/10

2. For this one, first find how many students out of the first 80 liked basketball by subtracting the 60 students who liked other sports from 80. This gives you 20. Now you know that 20/80 students like basketball. Now simplify the fraction to get 1/4. Then find 1/4 of 100, because we know that 1/4 of students like basketball. 1/4 of 100 is 25.

3. This problem is exactly the same as number 1, except instead of adding all the other colors and putting them as a fraction over the total, just put the number of pink shirts over the total number of shirts to get 3/12. Then simplify it to 1/4, and that's your answer.

4. This is also similar to problems 1 and 3. Just put the number of heads coin tosses over the total and simplify it.

5. This one is very similar to all the problems so far. I will let you do this one on your own. Remember: The number of cases (rolls or colors or sports or cards etc.) that you want to find the probability for goes on top, and the total number of those things goes on the bottom. The bigger the fraction, the greater probability there is.

Note: Please only ask one question at a time on here instead of 5 at once. Since these problems are so similar, chances are, you could have figured them out on your own with a little help on one of them. You are more likely to get a quick answer if the answerer doesn't have to do as much work.

4 0
2 years ago
A penguin walks 10 feet in 6 seconds. At this speed:
AlexFokin [52]

Answer:

1. 75 feet

2. 27 seconds

Step-by-step explanation:

1. If six seconds is equal  to 10 feet that means that 42 seconds is equal to 70 feet (6 X 7 = 42) It also means that 3 seconds is equal to 5 feet. (42 + 3 = 45)

2. If 6 seconds is 10 feet, then 6 X 4 is 40 feet (24) And since 5 feet is equal to   3 seconds then we get 24 + 3 = 27

7 0
2 years ago
How to prove system of nonlinear equations has finite solutions?
nalin [4]
This is what you could do

4 0
3 years ago
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