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Alexxx [7]
3 years ago
6

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

find the coefficient and variation for each of the two samples then compare the variation male: 87 68 61. 68 69 53 62 54 84 72 61 60 100 58 66 females: 65 81 82 70 74 86 87 84 88 89 94 71 86 80 78
The cofficient of variation for the males pulse rate ?
Mathematics
1 answer:
Sloan [31]3 years ago
8 0

Step-by-step explanation:

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Gary can hike 2.5 miles in 30 minutes.At that rate, how long will it take him tohike the 8 miles to Chena Lake?
4vir4ik [10]

Answer:

96 minutes

Step-by-step explanation:

1. find the quotient of 8 and 2.5. Which is 3.2

2. then find the product of 30 and 3.2 to get 96 minutes.

8 0
3 years ago
Amalia and Alec are studying the growth of a plant over time. They measure the height of the plant at the end of each week for s
EleoNora [17]

After 7 weeks the plant will 11.25 units tall if the equation for the best-fit line to be y = 2.5 + 1.25x.

<h3>What is the line of best fit?</h3>

A mathematical notion called the line of the best fit connects points spread throughout a graph. It's a type of linear regression that uses scatter data to figure out the best way to define the dots' relationship.

\rm m = \dfrac{n\sum xy-\sum x \sum y}{n\sum x^2 - (\sum x)^2} \\\\\rm c = \dfrac{\sum y -m \sum x}{n}

We have a line of best fit:

y = 2.5 + 1.25x

Plug x = 7 weeks

y = 2.5 + 1.25(7)

y = 11.25 units

Thus, after 7 weeks the plant will 11.25 units tall if the equation for the best-fit line to be y = 2.5 + 1.25x.

Learn more about the line of best fit here:

brainly.com/question/14279419

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3 0
3 years ago
Which of these functions below could be defined by a cubic equation?
erik [133]

Answer:

Graph 2 is the cubic equation.

Step-by-step explanation:

We have been given  the two graphs

So, we will conclude the function by end behavior

The cubic function enters from the left downwards and exists the graph from the right.

Cubic function will have 3 zeroes being of 3rd degree

And since the second function cuts the graph at three points

Hence, second graph is the cubic equation.

Zeroes are: -3 ,0 and 3.

4 0
4 years ago
Read 2 more answers
Four less than 5 times a number is the same as 26 more than twice the number.
Tju [1.3M]

Answer:

False

Step-by-step explanation:

5x - 4 versus 2x + 26

Imagine x equals 1, then the equations would be:

5(1) - 4 and 2(1) + 26

1 and 28 are not equivalent.

Another example would be x = 6

5(6) - 4 and 2(6) + 26

26 and 38 are not equivalent.

No matter what you replace x with, the expressions are never equal.

7 0
3 years ago
Read 2 more answers
Help dued in 10 mintues
melamori03 [73]
You can find the improper fractions of both.
14 1/2=29/2
1 3/5=8/5
Divide the two numbers 
(29/2)/(8/5) and you will get 145/16 or 9.0625. 
Therefore, you can fit 9 books on the bookshelf.
4 0
4 years ago
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