Round to the nearest tenth if necessary.

A teacher collected data from a class of eighth grade students on whether or not they play a sport and whether or not they are i

Nata [24]

Answer:

B. Those who are in the school musical tend not to play a sport.

Step-by-step explanation:

The relative frequency for a data set n is calculated by dividing each frequency $f_{x_i}$ by n

$f_r = \frac{f_{x_i}}{n}$ .

We have a table that relates students who are in music school with students who practice a sport.

First, we take the population that is in the music school from the table.

Then, of the students who are in the music school, 5 practice some sport and 12 do not practice any sport

Then we calculate the relative frequencies for those who practice a sport and those who do not practice any sport.

________________________________________________________

Relative frequency Students that are in the school musical. n=17.

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Sport No Sport Total n

5 12 17

_____________________________________________

_______________________________________________

Relative frequency Students that are in the school musical. n=17

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Sport (fr) No Sport (fr) Total n

5/17 = 0.29 12/17= 0.71 17

________________________________________________

Most students who are in music school do not practice a sport. $f_r = \frac{12}{17} = 0.705$

70% of students who are in music school do not practice a sport

Now we calculate the relative frequency of students who are not in music school. Of these students 9 of them practice a sport and 4 of them do not practice any sport.

__________________________________________________________

Relative frequency Students that are not in the school musical. n=13

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

Sport No Sport Total n

9 4 13

__________________________________________________________

_______________________________________________

Relative frequency Students that are not in the school musical. n=13

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

Sport (fr) No Sport (fr) Total n

9/13= 0.69 4/13= 0.21 13

_______________________________________________

Note that of students who are not in music school, most of them practice a sport. $f_r = \frac{9}{13} = 0.69$

Finally you can conclude that the association does the two-way table suggest is:

B. Those who are in the school musical tend not to play a sport.

7 0

3 years ago

Does anyone know the answer?

LUCKY_DIMON [66]

Answer:

c

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

The bearing of P from Q is 046º.

a_sh-v [17]

Answer:

175°

Step-by-step explanation:

Bearing angles are usually measured clockwise from North. Reverse bearing angles differ from forward bearing angles by 180°. These relations and the usual angle sum relation for a triangle can be used to solve this problem.

Angle PQR will be the difference in the bearings from Q to P and Q to R:

∠PQR = 124° -46° = 78°

Triangle PQR is isosceles, so the base angle at P will be ...

∠QPR = (180° -78°)/2 = 51°

__

The bearing from P to R will be 51° less than the bearing from P to Q. The bearing from P to Q is 180° more than the bearing from Q to P.

PR bearing = PQ bearing - ∠QPR

= PQ bearing - 51°

= (46° +180°) -51° = 175°

The bearing of R from P is 175°.

7 0

2 years ago

Hi! can you help me please with this? and process pls?

Kaylis [27]

Answer:

6, 9, 4

Step-by-step explanation:

1/3 = 2/6 = 3/9 = 4/12

3 0

3 years ago

Read 2 more answers

Victoria weighs 5/7 as much as mario. victoria weighs 125 lb. how much does mario weigh?

ehidna [41]

Let M equals to Mario's weight (M = Mario’s weight) then formulate an equation from the given phrase: "Victoria weighs 5/7 as much as Mario. Victoria weighs 125 lb", so the equation would be: 125 lb = (5/7) M. To solve for M, multiply both sides by 7, then it will result to 875 = 5M then finally, divide both sides by 5 to get Mario’s weight which is equals to 175 lbs.

7 0

4 years ago