Question 1 ( 3 points) The high school concert choir has 7 boys and 15 girls. The teacher needs to pick three soloists for the next concert but all of the members are so good she decides to randomly select the three students for the solos. a) In how many ways can the teacher select the 3 students? b) What is the probability that all three students selected are girls? c) What is the probability that one boy and two girls are selected?

19. Una urna contiene 100 bolillas numeradas del 1 al 100 . Al extraer una de ellas, ¿cuall es la probabilidad de que el número que contiene sea divisible por 3? \( \begin{array}{ll}\text { O A) } 0.23 \\ \text { ( } & \text { B) } 0.33 \\ \text { - } & \text { C) } 0.55 \\ \text { - } & \text { D) } 1 / 30 \\ \text { - } & \text { E) N.A. }\end{array} \)

Question 4 of 15 , step 1 of 1 A quality control inspector has drawn a sample of 19 light bulbs from a recent production lot. If the number of defective bulbs is 2 or more, the lot fails inspection. Suppose \( 30 \% \) of the bulbs in the lot are defective. What is the probability that the lot will fail inspection? Round your answer to the nearest ten-thousandth, if necessary. Answer

5. Cuál es la probabilidad de que en una familia de 3 hijos, haya 2 niños y 1 ninata? \( \begin{array}{ll}\text { A) } & 1 / 2 \\ \text { - } & \text { B) } 1 / 3 \\ \text { - } & \text { C) } 1 / 4 \\ \text { - } & 1 / 4 \\ \text { D) } 1 / 6 \\ \text { E) N.A. }\end{array} \)

A) What is the probability that daily production is between 10.6 and 38.8 liters? Do not round until you get your your final answer. Answer= \( \square \) (Round your answer to 4 decimal places.)

A student takes an exam containing 16 true or false questions. At least 11 correct answers are required to pass. If the student guesses, what is the probability that he will pass? Round your answer to the nearest ten-thousandth, if necessary. Answer