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Homework: Online assignmnet #8 Normal approximation to the Score: 0 of 1 pt 1 10 of 11 (9 complete) V E] HW Score: 59.09%, 6.5 of 11 pts 6.6.1 3-T Question Help V a A gender-selection technique is designed to increase the likelihood that a baby will be a girl. In the results of the gender-selection technique, 897 births consisted of 466 baby girls and 431 baby boys. In analyzing these results, assume that boys and girls are equally likely. 3. Find the probability of getting exactly 466 girls in 897 births. b. Find the probability of getting 466 or more girls in 897 births. If boys and girls are equally likely, is 466 girls in 897 births unusually high'? G. Which probability is relevant for trying to determine whether the technique is effective: the result from part (a) or the result from part (b)? d. Based on the results, does it appear that the gender-selection technique is effective? a. The probability of getting exactly 466 girls in 897 births is D. (Round to four decimal places as needed.) Homework: Online Assignment #7 Discrete distributions and Bi Score: 0 of 1 pt 4 17 of 40 (20 complete) v II] Hw Score: 45.42%, 18.17 of 40 pts 5.2.21-T Question Help V O Assume that when adults with smartphones are randomly selected, 43% use them in meetings or classes. If 5 adult smartphone users are randomly selected, nd the probability that exactly 2 of them use their smartphones in meetings or classes. The probability is D. (Round to four decimal places as needed.) Homework: Online Assignment #7 Discrete distributions and Bi Score: 0 of 1 pt { 18 of 40 (20 complete) Y E HW Score: 45.42%, 18.17 of 40 pts 5H222-T Question Help V O Assume that when adults with smartphones are randomly selected, 63% use them in meetings or classes. If 15 adult smartphone users are randomly selected, nd the probability that exactly 11 of them use their smartphones in meetings or classes. The probability is D. (Round to four decimal places as needed.) Homework: Online Assignment #7 Discrete distributions and Bi Save Score: 0 of 1 pt 22 of 40 (20 complete) HW Score: 45.42%, 18.17 of 40 pts 5.2.26 Question Help A survey showed that 83% of adults need correction (eyeglasses, contacts, surgery, etc.) for their eyesight. If 18 adults are randomly selected, find the probability that at least 17 of them need correction for their eyesight. Is 17 a significantly high number of adults requiring eyesight correction? The probability that at least 17 of the 18 adults require eyesight correction is (Round to three decimal places as needed.)Homework: Online Assignment #7 Discrete distributions and Bi Score: 0 of 1 pt { 23 of 40 (20 complete) Y } HW Score: 45.42%, 18.17 of 40 pts 5.2.27-T Based on a poll, 60% of adults believe in reincarnation. Assume that 6 adults are randomly selected, and nd the indicated probability. Complete parts (a) through (d) below. Question Help V 'O a. What is the probability that exactly 5 of the selected adults believe in reincarnation? The probability that exactly 5 of the 6 adults believe in reincarnation is |:. (Round to three decimal places as needed.) Homework: Online Assignment #7 Discrete distributions and Bi Score: 0 of 1 pt { 24 of 40 (20 complete) V E HW Score: 45.42%, 18.17 of 40 pts 5.2.28'T Question Help V 'a Based on a poll, among adults who regret getting tattoos, 16% say that they were too young when they got their tattoos. Assume that seven adults who regret getting tattoos are randomly selected, and nd the indicated probability. Complete parts (a) through (d) below. 3. Find the probability that none of the selected adults say that they were too young to get tattoos. D (Round to four decimal places as needed.) Homework: Online Assignment #7 Discrete distributions and Bi Save Score: 0 of 1 pt 27 of 40 (20 complete) HW Score: 45.42%, 18.17 of 40 pts 5.2.36-T Question Help When purchasing bulk orders of batteries, a toy manufacturer uses this acceptance sampling plan: Randomly select and test 50 batteries and determine whether each is within specifications. The entire shipment is accepted if at most 3 batteries do not meet specifications. A shipment contains 7000 batteries, and 1% of them do not meet specifications. What is the probability that this whole shipment will be accepted? Will almost all such shipments be accepted, or will many be rejected? The probability that this whole shipment will be accepted is (Round to four decimal places as needed.)
