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vodka [1.7K]
2 years ago
6

Out of sample of 500 people, 25% exercise daily. What is the confidence interval for the population mean of people that exercise

daily, given a confidence level of 95%?
Cl = (20.98%, 30.02%)
CI = (21.81%, 28.19%)
Cl = (21.20%, 28.80%)
CI = (20.01%, 29.99%)
​
Mathematics
1 answer:
Scorpion4ik [409]2 years ago
7 0

Answer:

The answer is C

Step-by-step explanation:

Its correct

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the sum of two numbers is 70. the larger number is five less than twice the smaller number . what are the two numbers
earnstyle [38]
X+y=70
x=2y-5
x=larger number
y=smaller number
now plug in the value of x to only have one variable in the equation...
Way to solve for y:
(2y-5)+y=70
3y-5=70
add 5 on both sides...
3y=75
divide by 3 on both sides
y=25
1st way to solve for x:
now plug in y in the original equation...
x+25=70
subtract 25 on both sides...
x=45
2nd way to solve for x:
plug in y for the second equation...
x=25(2)-5
x=50-5
x=45
answer: the two numbers are 45 and 25.

3 0
3 years ago
What is the y intercept of y=9x-11
svetlana [45]

Answer:

-11

Step-by-step explanation:

To find the y-intercept, simply look at the constant at the end of this equation. Let's look at the linear function equation. The equation is y=mx+b. In this case, the constant is b. The constant always is the non-x term, so for the question, the y-intercept would be -11.

8 0
3 years ago
How can I find the corresponding angles?
Alex
It's A.

The corresponding angles are the ones in matching corners (e.g 1 and 5, 2 and 6, etc.).
4 0
3 years ago
*****PLEASE HELP******
ruslelena [56]

Answer:

O B. f(x) = 2^x

i think its true but iam not sure

hope it helps

8 0
3 years ago
at a small private college with 800 students, 240 students receive some form of government-sponsored financial aid. find the pro
vazorg [7]

The probability is 7/10 or 70% that a randomly selected student does not receive some form of government-sponsored financial aid

Total number of students in the small private college = 800

Number of students who receive some form of government-sponsored financial aid = 240

Number of students who did not receive government-sponsored financial aid = 800 - 240 = 560

Computing the probability using the formula, we get the following:

The probability that a randomly selected student did not receive government-sponsored financial aid = Number of students who did not receive financial aid/Total number of students in the college

= 560/800 = 7/10 or 70%

Learn more about probability:

brainly.com/question/11234923

#SPJ4

3 0
1 year ago
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