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weqwewe [10]
3 years ago
6

Suppose that 28.3% of all students took an accounting course 31.3 of all students took a statistics course and 49.1 of all stude

nts took in accounting and statistics course what is the probability that a randomly-selecte student took in accounting or statistics course
Mathematics
1 answer:
Zarrin [17]3 years ago
6 0

Answer:

10.5%

Step-by-step explanation:

The probability that a student took an accounting course, P(A)= 28.3%

The probability that a student took a statistics course P(A)= 31.3%

The probability that a student took accounting and statistics course,

P(A \cap S)=49.1\%

We want to determine the probability that a randomly selected student took an accounting or statistics course, P(A \cup S)

In probability theory,

P(A \cup S)=P(A)+P(S)-P(A \cap S)\\P(A \cup S)=28.3\%+31.3\%-49.1\%\\P(A \cup S)=0.283+0.313-0.491\\P(A \cup S)=0.105

The probability that a randomly selected student took an accounting or statistics course is 0.105 or 10.5%.

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andreyandreev [35.5K]

Answer:

90 but since its a triangle but im

pretty sure you have to divide by 2 so 45 i think

3 0
3 years ago
A rectangle has sides that measure x + 1/4
maksim [4K]

Answer:

6x + 5/6

Step-by-step explanation:

2(x + 1/4) + 2(2x + 1/3)

2x + 1/2 + 4x + 2/3

6x + 5/6

6 0
2 years ago
15 similar blouses and 2 similar skirts cost $505. 5 such blouses and 2 such
Luden [163]

Answer:

Cost of five blouses = $145

Step-by-step explanation:

Let

x = cost of blouse

y = cost of skirt

15x + 2y = 505 (1)

5x + 2y = 215 (2)

Subtract (2) from (1) to eliminate y

15x - 5x = 505 - 215

10x = 290

x = 290/10

x = 29

Substitute x = 29 into (2)

5x + 2y = 215 (2)

5(29) + 2y = 215

145 + 2y = 215

2y = 215 - 145

2y = 70

y = 70/2

y = 35

x = cost of blouse = $29

y = cost of skirt = $35

How much do 5 such blouses cost?

cost of a blouse = $29

Cost of five blouses = $29 × 5

= $145

Cost of five blouses = $145

5 0
2 years ago
Suppose that 10% of all steel shafts produced by a certain process are nonconforming but can be reworked (rather than having to
balandron [24]

Answer:

0.9905,0.9837,0.8066

Step-by-step explanation:

Given that 10%  of all steel shafts produced by a certain process are nonconforming but can be reworked (rather than having to be scrapped).

Each shaft is independent of the other and probability for non conforming is the same for each trial.

Hence X the among these that are nonconforming and can be reworked. is Bin with n =200 and p = 0.10

a) P(X\leq 30) = 0.9905

b) P(X

c) P(15\leq x\leq 25)\\= F(25)-F(14)\\= 0.8995-0.0929\\= 0.8066

6 0
3 years ago
If x = -12, y = -3; find xy?<br><br>​
wolverine [178]

<u>Given </u><u>that</u><u> </u><u>:</u><u>-</u><u> </u>

  • x = -12
  • y = -3

<u>To</u><u> </u><u>Find</u><u> </u><u>:</u><u>-</u><u> </u>

  • Value of xy

<u>S</u><u>o</u><u>l</u><u>u</u><u>t</u><u>i</u><u>o</u><u>n</u><u> </u><u>:</u><u>-</u><u> </u>

<u>☆</u><u> </u>When a negative digit is multiplied with negative digit then the result comes as positive digit .

→ x × y = (-12)(-3)

→ x.y = 36

So the answer is 36.

3 0
3 years ago
Read 2 more answers
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