Question

What is the estimated probability that at least two of the puppies will be

female?
O A. 5/10 = 50%
O B . 8/10 = 80%
O C. 3/10 = 30%
O'D. 7/10 = 70% ​

Answer 1

B. 8/10 = 80%

Explanation:

number of sample space ( that is the total of the results)

n(s) = 10

the question says at least two of the puppies will be female.

let heads,h, = female puppies

then, we check the results;

number of at least two h [n( at least two h)] = hhhh, tthh, hhtt, thth, htth, hhht, hhtt, hthh.

n( at least two h) = 8

probability of at least two of the puppies will be female ( pr of at least h) = n( at least h )

n(s)

= 8 = 80%

10