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2 years ago

Of the 125 members of the marching band, 42 are in chorus, 78 play

1 answer:

4 0

Using it's concept, it is found that there is a 0.2979 = 29.79% probability that they are in chorus, given that they do not play a sport.

<h3>What is a probability?</h3>

A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.

In this problem, 125 - 78 = 47 members of the band do not play a sport, of which 42 - 28 = 14 are in the chorus, hence the probability is given by:

p = 14/47 = 0.2979.

More can be learned about probabilities at brainly.com/question/14398287

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The diagram shows parallel lines a and b cut by transversals c and d. if m<1 = 115 degrees and m<8 = 105 degrees, what is

marshall27 [118]

the answers are : for m<5 it is 75 degrees, for m<11 i think it is 75 degrees, and m<16 it is 65 degrees

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3 years ago

Evaluate the expression when a = 3, b = 2, and c= -3: (a³ + 2bc)/( c² -5)

natta225 [31]

((3*3*3)+2(-6))/((-3*-3)-5)
(27-12)/9-5
15/4

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3 years ago

Construct a probability distribution for the data.

lianna [129]

Answer:

X : ___ 0 ____ 1 _____ 2 ______ 3

P(X) : _ 6/15 __ 5/15__ 3/15 ____ 1/15

Step-by-step explanation:

From the data, to produce a probability distribution for the data :

X : number of times blood is drawn ;

P(x) : probability that blood is drawn at X times

Hence, the probability distribution table for the data Given goes thus :

X : ___ 0 ____ 1 _____ 2 ______ 3

P(X) : _ 6/15 __ 5/15__ 3/15 ____ 1/15

Probability that blood is drawn 0 times = 6/15

Probability that blood is drawn 1 time = 5/15

Probability that blood is drawn 2 times = 3/15

Probability that blood is drawn 3 times = 1/15

(6/15 + 5/15 + 3/15 + 1/15) = 1

5 0

3 years ago

The bowling alley made $4,200 in shoe rentals last week. Let p represent the number of pairs of shoe

Zanzabum

Answer:

p= 42,00 divided by 2.50

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Several surveys in the United States and Europe have asked people to rate their happiness on a scale of 3 = "very happy," 2 = "f

Rudik [331]

Answer:

Step-by-step explanation:

We have to find the reported happiness of person of family income of $25,000, $35,000 and $45,000

Given that the formula for finding relation between a people happiness and his income is

y = 0.065x - 0.613

a) find the happiness of person of family income os $25,000

we put x = 25 as in the equation above

$y=0.065(25)-0.613\\\\=1.625-0.613\\\\=1.02 \approx 1$

Hence, person happiness with with family income of $25,000 on a scale of 3 is y = 1

That means they come under catergory "not to happy"

b) Find the happiness of person of family income os $35,000

we put x = 35 as in the equation above

$y=0.065(35)-0.613\\\\=1.667-0.613\\\\=1.667 \approx 1.7$

Hence, person happiness with with family income of $35,000 on a scale of 3 is y = 1.7

That means they come under catergory "not to happy" and "fairly happy"

c) Find the happiness of person of family income os $45,000

we put x = 45 as in the equation above

$y=0.065(45)-0.613\\\\=2.925-0.613\\\\=2.312 \approx 2.3$

Hence, person happiness with with family income of $45,000 on a scale of 3 is y = 2.3

That means they come under catergory "fairly happy"

8 0

3 years ago