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2 years ago

Help Please!parallel and perpendicular lines

Mathematics

1 answer:

Brilliant_brown [7]2 years ago

6 0

I have checked this alot of times and I can never seen the pic....

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Listed below are pulse rates (beats per minute) from samples of adult males and females. Does there appear to be a difference

MrMuchimi

Answer:

There appears to be a difference between the pulse rates from samples of adult males and females. The average pulse rate of males is 63.75 while that of females is 75.875.

Coefficient of Variation (male) = 33.44%

Coefficient of variation (female) = 28.35%

Step-by-step explanation:

Mean (male) = $\frac{sum of x}{n} =\frac{1020}{16} =63.75$

Mean (female) = $\frac{sum of y}{n} = \frac{1214}{16} = 75.875$

Standard Deviation (male) = $\sqrt{\frac{sum(x-63.75)^2}{16-1} } =21.315$

Standard Deviation (female) = $\sqrt{\frac{sum(y-75.875)^2}{16-1} } = 21.512$

Coefficient of Variation = $\frac{Std dev}{mean} *100$

For male, CV = $\frac{21.315}{63.75} *100=33.44%$ %

For female, CV = $\frac{21.512}{75.875} *100=28.35$ %

Comparison : Pulse rates of males has more variability than that of females since it has a greater coefficient of variation.

5 0

3 years ago

Read 2 more answers

Please answer at least one of them.

dsp73

Hey there find an image attached..

8 0

3 years ago

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Can someone help me please?

Genrish500 [490]

Answer:

Step-by-step explanation:

The angle sum theorem *I think* is that for an n-sided shape, the total sum of its angles is 180(n-2).

The sum of a triangles' angles is 180 degrees.

Therefore 4v-44 = 180.

v - 11 = 45

v = 56 degrees

Note: always check if the answer makes sense

6 0

3 years ago

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Bag contains 5 blue, 12 black, 6 red, and 7 green marbles. If one marble is chosen at random the probablity that it is NOT blue

Alex Ar [27]

Answer:

D. 5/6

Step-by-step explanation:

There are 30 marbles

If you add the black, red, and green marbles together, you get 25

25/30 is equivalent to 5/6

3 0

2 years ago

In right triangle RST, with m∠S = 90°, what is sin T?

nika2105 [10]

Answer:

Step-by-step explanation:

Sin(t)

Type in Sin in your calculator

Then the ‘t’ stands for the angle

So....

Sin(90)

4 0

3 years ago