Question

Assume that a researcher randomly selects 14 newborn babies and counts the number of girls selected, x. The probabilities corresponding to the 14 possible values of x are summarized in the given table. Answer the question using the table.
Probabilities of Girls




Find the probability of selecting 12 or more girls.

Answer 1

table?

Answer 2

this is the chart

Answer 3

can you explain how you solve the question?

Answer 4

The probability of selecting 12 or more girls is found as follows:
\[\large P(12\ or\ more)=P(12) + P(13)+P(14)=you\ can\ calculate\]

Answer 5

so now I add them all up?????

Answer 6

Yes, adding the probabilities is correct.

Answer 7

so the answer is 0.007?

Answer 8

Your result is correct.

Answer 9

In a game, you have a 1/36 probability of winning $85 and a 35/36 probability of losing $4. What is your expected value?