Question

The accompanying table describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. Complete parts (a) through (d) below se EEE Click the icon to view the table. Ho a. Find the probability of getting exactly 6 girls in 8 births Type an integer or a decimal. Do not round.) b. Find the probability of getting 6 or more giris in 8 births 5/ Type an integer or a decimal. Do not round.) c. Which probability is relevant for determining hether 6 is a significantly high number of gris n 8 births: the result from part a) or part (b)? a OA. The result from part a, since it is the exact probablity being asked. Click to select vour answerls) The princi le of redundancy is used when syst daily failure rate. Complete parts (a) through (d) below. em reliabilty is improved through redundant or backup components. Assume that a student's alarm dock has a 18.1% urse a. What is the probability that the student's alarm clock will not work on the morning of an important final exam? □ (Round to three decimal places as needed.) b. If the student has two such alarm clocks, what is the probability that they both fail on the moming of an important final exam? e Ho ncer(Round to five decimal places as needed.) men c. What is the probability of not being awakened if the student uses three independent alarm clocks? (Round to five decimal places as needed.) Plan d. Do the second and third alarm clocks result in greatly improved reliability? book unel Click to select your answer(o).

Answer 1