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faust18 [17]
3 years ago
7

One hundred students were surveyed and asked if they participate in band and if they play a sport. The table below summarizes th

eir responses.
Of students that do NOT play a sport, what is the relative frequency of those who participate in band?

Mathematics
1 answer:
Umnica [9.8K]3 years ago
8 0

Answer:

22/30

Step-by-step explanation:

22 students participate in band and 8 do not. The total number of students that don't play sports are 30 in total cause 22 + 8 = 30.

So, 22/30

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Iq scores are normally distributed with a mean of 100 and a standard deviation of 15 what is the probability that a randomly sel
a_sh-v [17]
So we are given the mean and the s.d.. The mean is 100 and the sd is 15 and we are trying the select a random person who has an I.Q. of over 126. So our first step is to use our z-score equation:

z = x - mean/s.d.

where x is our I.Q. we are looking for

So we plug in our numbers and we get:

126-100/15 = 1.73333

Next we look at our z-score table for our P-value and I got 0.9582

Since we are looking for a person who has an I.Q. higher than 126, we do 1 - P. So we get

1 - 0.9582 = 0.0418

Since they are asking for the probability, we multiply our P-value by 100, and we get 

0.0418 * 100 = 4.18%

And our answer is

4.18% that a randomly selected person has an I.Q. above 126
Hopes this helps!
6 0
3 years ago
Solve the inequality:<br> 3(k + 2) -3 &lt; 15
grin007 [14]

Isolate the variable by dividing each side by factors that don't contain the variable.

Inequality Form:

k < 4

Interval Notation:

(−∞, 4)

6 0
3 years ago
How do you write 0.33 as a percent
Elena L [17]
You would write 0.33 as 33%.

Hope this helps!
5 0
3 years ago
Read 2 more answers
What is 2/5 as a decimal
Natali5045456 [20]

Answer:

0.4

Step-by-step explanation:

2/5 = 4/10

5 0
4 years ago
Read 2 more answers
Add and simplify 1/5 + 1/10
aliya0001 [1]

In order to add these fractions we have to make a common denominator.

1/5 can turn into 2/10 Its the same thing. And its easier to solve with.

now lets multiply.

\frac{2}{10} × \frac{1}{10}

Now we add across

2 + 1 = 3

------------  

10 + 10 = 10 ( When adding fractions like these the denominator stays the same)

So your answer is...

\frac{3}{10}

Good Luck! :)

7 0
3 years ago
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