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jarptica [38.1K]
2 years ago
7

Blaire keeps track of how much time she spends listening to music for one day.

Mathematics
1 answer:
Nonamiya [84]2 years ago
5 0
Ok..? What’s the question for this?
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Answer this please it’s for algebra 2
Sergeu [11.5K]

Part a)

P(junior) = (number of juniors)/(number total)

P(junior) = 235/705

P(junior) = 1/3 exactly

P(junior) = 0.33333 approximately

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

Part b)

P(freshman and LG) = (number of freshman who have LG)/(number total)

P(freshman and LG) = 70/705

P(freshman and LG) = 14/141 exactly

P(freshman and LG) = 0.09929 approximately

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

Part c)

n(junior) = number of juniors = 235

n(samsung) = number of people who have samsung = 274

n(junior and samsung) = number of juniors who have samsung = 93

----

n(junior or samsung) = n(junior)+n(samsung)-n(junior and samsung)

n(junior or samsung) = 235+274-93

n(junior or samsung) = 416

----

P(junior or samsung) = n(junior or samsung)/n(total)

P(junior or samsung) = 416/705 exactly

P(junior or samsung) = 0.59007 approximately

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

Part d)

n(sophomore and apple) = number of sophomores who have apple

n(sophomore and apple) = 80

n(apple) = number of students who have apple

n(apple) = 261

P(sophomore | apple) = n(sophomore and apple)/n(apple)

P(sophomore | apple) = 80/261 exactly

P(sophomore | apple) = 0.30651 approximately

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

Part e)

define the events

A = junior who has apple

B = junior who has samsung

C = person is a junior

n(A or B) = number of juniors who have apple or samsung

n(A or B) = n(A) + n(B) ... A and B assumed mutually exclusive

n(A or B) = 87+93

n(A or B) = 180

n(C) = 235

P( (Apple or Samsung) | Junior ) = n(A or B)/n(C)

P( (Apple or Samsung) | Junior ) = 180/235

P( (Apple or Samsung) | Junior ) = 36/47 exactly

P( (Apple or Samsung) | Junior ) = 0.76596 approximately

4 0
3 years ago
Help Pleaseeee. Find the hypotenuse.
ivann1987 [24]

I don't because I can't see

8 0
2 years ago
HELP ME PLEASEEEEEEEEEEEE
Pani-rosa [81]

Answer:

Step-by-step explanation:

D. D is the answer

6 0
2 years ago
I need the answer to these two problems​
dangina [55]

Answer:

the price of one shirt increases from 10 to 15

so c hope it helped

Step-by-step explanation:

6 0
3 years ago
Please help me <br> Please
vovikov84 [41]
1. 2.00321
2. 2.01465
3. 2.0155
4. 2.04285
6 0
3 years ago
Read 2 more answers
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