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Keith_Richards [23]
3 years ago
13

Five runners ran a marathon before they used a new training program. The same five runners also ran a marathon after they went t

hrough the new training program. The following data represents the completion time of a marathon in minutes for each of the 5 runners before and after training with the new training program. The trainer wants to determine if the training program results in faster completion time of the marathon. (You can use Excel for solving this problem).
Runner Before After
1 110 94
2 88 81
3 84 82
4 94 88
5 108 97
1. What is the observed value of the test statistic?
A) 3.53
B) 1.179
C) 1.924
D) 2.732
E) 0.417
Mathematics
1 answer:
Soloha48 [4]3 years ago
7 0
I think it is B or C. Sorry if I’m wrong.
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Does a charge battery have potential energy
vovangra [49]
I’m pretty sure it has potential energy. Because a charge battery can be charged. So it can have energy
3 0
4 years ago
Solve the equation below and find the variation constant, k .Find y when x = 7 and z=5, if y varies jointly as x and 2, and y= 1
Vlada [557]
<h3>Answers:</h3>

Variation Constant: k = 7/6

y = 245/6 when x = 7 and z = 5

====================================

Explanation:

"y varies jointly as x and z" means that y = kxz

We have (x,y,z) = (4,14,3) as one triple, so,

y = kxz

14 = k*4*3

14 = 12k

12k = 14

k = 14/12

k = 7/6 is the variation constant

The equation goes from y = kxz to y = (7/6)xz

----------------

Plug in x = 7 and z = 5 to find y

y = (7/6)xz

y = (7/6)*7*5

y = (7/6)*(7/1)*(5/1)

y = (7*7*5)/(6*1*1)

y = 245/6

4 0
3 years ago
Please help with these! or at least some of them.​
Fiesta28 [93]

Answer:

<h2>1) 9/2 = 5/4</h2><h2>5) False</h2><h2>6) $66</h2><h2>7) x=7</h2><h2>8) x=69</h2>

Step-by-step explanation:

5 0
3 years ago
A cylinder and a cone both have radius of 6". The height of the cone is 12". The height of the cylinder is 6". Which has the gre
Shkiper50 [21]

Answer:

cylinder has greatest volume

Step-by-step explanation:

solution

given,

radius of cylinder(r)=6cm

height of cylinder (h)=6cm

we know,

volume of cylinder=πr^2h

=22÷7×6×6×6

=4752÷7

=678.857cm^3

radius of cone(r)=6cm

height of cone(h)=12cm

we know,

volume of cone=1÷3πr^3

= 1÷3×22÷7×6×6×6

= 4752÷21

=226.2857cm^3

as a result,cylinder has greatest volume

4 0
3 years ago
Helllllllllppppp plllllsssss
Anvisha [2.4K]

Answer: It’s B

Because I took the quiz and got it right

8 0
3 years ago
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