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erastovalidia [21]
3 years ago
7

In a test of physical fitness, a group of men ages 65 and older from a local retirement community were told to do as many sit-up

s as they could. It is known that the population mean μ is 20 with standard deviation σ = 8. The average number of sit ups for men (n=16) from the retirement community was M = 24.5. Use a two-tailed test with an alpha of .05. What would you conclude?
Mathematics
1 answer:
Ivahew [28]3 years ago
8 0
Give ten fifth teen twenty so...98
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Cesar turned in his third research report, his teacher said that he had completed 20%of the reports for the school year, how man
AleksAgata [21]

Answer:

Cesar will be doing  15 research reports during the school year.

Step-by-step explanation:

Given:

Number of research report completed = 3

Percentage of the report completed for school year = 20%

We need to find total number of research report completed during school year.

Solution:

Let the total number of research report completed during school year be 'x'.

Now we can say that;

Number of research report completed is equal to Percentage of the report completed for school year multiplied by total number of research report completed during school year and then divided by 100.

framing in equation form we get;

3=\frac{20}{100}\times x\\\\3=0.2x

Dividing both side by 0.2 we get;

\frac{3}{0.2}=\frac{0.2x}{0.2}\\\\x=15

Hence Cesar will be doing  15 research reports during the school year.

6 0
3 years ago
What is the constant rate of change for (2, 8), (3, 12) and (6, 24)?
3241004551 [841]

Answer:

(1 , 4)

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8 0
3 years ago
Wrich expreson is equivalent to 4(3-6).​
Korvikt [17]
You haven’t provided any option, however I think I can still help.

You can solve 4(3-6). You first deal with he parenthesis, and get 4(-3). This means that your expression is equivalent to -12.


Hope this helps :)
8 0
3 years ago
What number is 6% of 30?
rosijanka [135]

so you would do 6/100 *30/1 wich is 90/50 as a pecent is 180 an move the decimal place 2 times

<u>ANSWER</u> 1.8


3 0
3 years ago
Read 2 more answers
Alison does 8 math problems in 2 minutes. How long will it take her to do a set of 160 problems?
erastovalidia [21]

Answer:

40 min

Step-by-step explanation:

find unit rateeee  p=problems

8 p= 2 min

8/2=4

so Alison can do 4 math problems per minute

so 160/4= 40 minutes

hope this helps

5 0
3 years ago
Read 2 more answers
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