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NeX [460]
3 years ago
14

In a group of 100 students, 40 are taking math and 50 are taking English, but no one is taking both. What is the probability tha

t a randomly selected student from this group is taking either math or English?
Mathematics
1 answer:
prisoha [69]3 years ago
7 0

Answer:

the answer is 90 percent

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Sociologists say that 85% of married women claim that their husband's mother is the biggest bone of contention in their marriage
hoa [83]

Answer:

(A) 0.377,

(B) 0.000,

(C) 0.953,

(D) 0.047

Step-by-step explanation:

We assume that having a bone of intention means not liking one's Mother-in-Law

(A) P(all six dislike their Mother-in-Law) = (85%)^6 = (.85)^6 = 0.377

(B) P(none of the six dislike their Mother-in-Law) =

(100% - 85%)^6 =

0.15^6 =

0.000

(C) P(at least 4 dislike their Mother-in-Law) =

P(exactly 4 dislike their Mother-in-Law) + P(exactly 5 dislike their Mother-in-Law) + P(exactly 6 dislike their Mother-in-Law) =

C(6,4) * (.85)^4 * (1-.85)^2 + C(6,5) * (.85)^5 * (.15)^1 + C(6,6) * (.85)^6 = (15) * (.85)^4 * (.15)^2 + (6) * (.85)^5 * .15 + (1) * (.85)^6 =

0.953

(D) P(no more than 3 dislike their Mother-in-Law) =

P(exactly 0 dislikes their Mother-in-Law) + P(exactly 1 dislikes her Mother) + P(exactly 2 dislike their Mother-in-Law) + P(exactly 3 dislike their Mother-in-Law) =

C(6,0) * (.85)^0 * (.15)^6 + C(6,1) * (.85)^1 * (.15)^5 + C(6,2) * (.85)^2 * (.15)^4 + C(6,3) * (.85)^3 * (.15)^3 =

(1)(1)(.15)^6 + (6)(.85)(.15)^5 + (15)(.85)^2 *(.15)^4 + (20)(.85)^3 * (.15)^3 =

0.047

3 0
2 years ago
A gym membership<br> charges an initial fee<br> of $150 then $20 per<br> month.
Vsevolod [243]

Answer:

n=150+20m

Step-by-step explanation:

we don't know how many months they're charging for, so we don't know the total of the amount.

7 0
3 years ago
A given line has the equation 2x+12y=-1
strojnjashka [21]
2x + 12y = -1
12y = -1 - 2x
y = -1/6x - 1/12
7 0
3 years ago
Read 2 more answers
Jacky is installing a rectangular swimming pool in her back yard. It measures 25 feet by 50 feet. What is the area of her pool?
Sati [7]
Multiplying length times width, the area of the pool would be 1,250 square feet.
7 0
3 years ago
Questions in pic plz help
lara31 [8.8K]

Answer:

B.

Step-by-step explanation:

6 0
2 years ago
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