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gregori [183]
2 years ago
5

a study was to be undertaken to determine if a particular training program would improve physical fitness. an srs of 31 universi

ty students was selected to be enrolled in the fitness program. one important measure of fitness is maximum oxygen uptake. measurements of oxygen uptake in untrained individuals are known to follow a normal distribution with a mean of begin mathsize 16px style mu end style
Mathematics
1 answer:
Nataliya [291]2 years ago
3 0

Step-by-step explanation:

A study was to be undertaken to determine if a particular training program would improve physical fitness. A sample of 31 university students was selected to be enrolled in the fitness program. The researchers wished to determine if there was evidence that their sample of students differed from the general population of untrained subjects. The sample mean is 47.4 and a standard deviation of 5.3. The 98% confidence interval is determined and is given as, (45.2, 49.6) .

If the level of confidence is changed to 95%, then the confidence interval will become shorter but the p-value will not change because it is calculated using the test statistic. So the correct answer is (a).

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Work out the area of this circle. Give you answer in terms of pi and state it’s units
tino4ka555 [31]

Answer:

49π

Step-by-step explanation:

area of circle = πr^2

<em>Handy Tip: cherry pies delicious; apple pies are(R) too(2)! so C = πd and A = πr^2</em>

diameter = 14 cm

radius = 14/2 = 7cm

area of circle = π(7)^2

area of circle = 49π

Hope that helps!

3 0
3 years ago
Given f(x)=2x+1 find the value of k so that the graph is f(x)+k
luda_lava [24]
Where's the graph?  Insufficient info here to enable us to answer this question.
If possible take a photo of the original problem and upload the image to Brainly.
8 0
3 years ago
there is a drawing with students name in a bag. there are 13 girls and 12 boys.what is the probability of drawing a girl's name
ryzh [129]

Answer:

13 in12

Step-by-step explanation:

6 0
3 years ago
I'll. ark brainlyest and give a lot of points for answering this right ​
valina [46]

Answer:

\displaystyle T'(  2,4)

\displaystyle U'( 1,1)

\displaystyle S' ( 3,2)

Step-by-step explanation:

we current vertices of the given triangle

  • \displaystyle T( - 2,4)
  • \displaystyle U( - 1,1)
  • \displaystyle S ( - 3,2)

remember that,

\rm\displaystyle(x,y) \xrightarrow{ \rm reflection \:  over \: y - axis}( -  x,y)

so we obtain:

\rm\displaystyle \: T( - 2,4) \xrightarrow{ \rm reflection \:  over \: y - axis}T'(  2,4)

\rm\displaystyle \: U( - 1,1) \xrightarrow{ \rm reflection \:  over \: y - axis}U' ( 1,1)

\rm\displaystyle S( - 3,2) \xrightarrow{ \rm reflection \:  over \: y - axis}S'( 3,2)

6 0
3 years ago
Nicole is cooking cookies recipe calls for 5 cups of flour she has already put in three 1/3 cups how many more cups does she nee
scoundrel [369]

Answer:

1 2/3 cups of flour

Step-by-step explanation:

Nicole is cooking cookies recipe calls for 5 cups of flour she has already put in three 1/3 cups how many more cups does she need to put in?

We solve the above question using Subtraction operation

The number of cups she still needs to put in =

5 cups - 3 1/3 cups

= 5 - 3 1/3

= 5/1 - 10/3

The Lowest Common Denominator = 3

= 15 - 10/3

= 5/3

= 1 2/3 cups of flour

3 0
3 years ago
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