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4 years ago

12

Mr. Tindel will randomly choose a student from his class as the student council representative. There are 17 girls and 6 boys in

his class. What is the probability that Mr. Tindel will choose a girl?

1 answer:

yuradex [85]4 years ago

7 0

Answer: 17/23 or 73.91%

Step-by-step explanation:

There are 17 girls and 23 people in total so you do 17/23.

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Answer:

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24. Ninety-four percent of NCSU transfers feel that their college adequately prepared them to handle upper-division coursework a

s2008m [1.1K]

Answer:

The answer is " $0.99999340657 \sim 1$ ".

Step-by-step explanation:

$Sucess \ probability \ (p) = 94\% \ or\ 0.94\\\\Sample\ numbers\ n = 14\\$

Using formula:

$P(X=r)= ^n C_r \times p^r \times (1-p)^{n-r}$

Let

$\to r=8,9,10,11,12,13 \ or\ 14\\\\$

Substituting the value for all r:

$P(X=8)= 0.00008540547\\\\P(X=9)= 0.00089201264\\\\P(X=10)= 0.00698743233\\\\P(X=11)= 0.03980719025\\\\P(X=12)= 0.15591149513\\\\P(X=13)= 0.37578668058\\\\P(X=14)= 0.42052319017\\$

Therefore,

$P(X>7)= P(X=8)+P(X=9)+....P(X=14)\\\\= 0.99999340657 \sim 1.$

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