Consider the following Binomial Experiment: The probability that a cell phone manufactured at Electronics Unlimited is defective is 0.11. If a sample of 8 cell phones is selected at random, what is the probability that at least 1 is defective? a) 0.3504 b) 0.5577 c) 0.6063 d) 0.3937 e) 0.4423
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Consider the following Binomial Experiment: The
a) 0.3504
b) 0.5577
c) 0.6063
d) 0.3937
e) 0.4423
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- A study by a reputable research organization found that when presented with prints from the same individual, a fingerprint expert will correctly identify the match 91% of the time. In contrast, a novice will correctly identify the match 77% of the time. Consider a sample of seven different pairs of fingerprints, where each pair is a match. Complete parts a and b below. a. What is the probability that an expert will correctly identify the match in all seven pairs of fingerprints? The probability is enter your response here. (Round to four decimal places as needed.) b. What is the probability that a novice will correctly identify the match in all seven pairs of fingerprints? The probability is enter your response here. (Round to four decimal places as needed.)Given a random sample size of n = 900 from a binomial probability distribution with P = 0.10 do the following: a. Find the probability that the number of successes is greater than 110. b. Find the probability that the number of successes is fewer than 53. c. Find the probability that the number of successes is between 55 and 120.d. With probability 0.10, the number of successes is fewer than how many? e. With probability 0.08, the number of successes is greater than how many?The U.S. Health Department reported that 40% of households had both a wireless phone and a landline. Assume that in a simple random sample of 300 households, 105 are found to have both services. With this information answer the following questions: What is the population proportion, π? What is the sample proportion, p? What is the standard error of the sample proportion? In the sampling distribution of the proportion, what is the probability that a sample of this size would result in a sample proportion at least 35%?
- The data below was obtained from a random survey of 459459 people. The participants were asked their political party and whether they approve, disapprove, or have no opinion of how the president is doing his job. The results of the survey are as follows: Democrat Republican Independent Total Approve 103 56 8 167 Disapprove 109 123 5 237 Undecided 27 28 5 55 Total 239 207 18 459 If a person if selected at random, what is the empirical probability that the the person approves of the job the president is doing or is an independent?c. What is the z-score/how many standard errors away is an average of 12 hours for a sample of size 81? What is the probability that it would take on average over 12 hours for the 81 taxpayers to finish their form 1040? Would you find this unusual? O yes no d. What is the z-score/how many standard errors away is an average of 12 hours for a sample of size 100? What is the probability that it would take on average over 12 hours for the 100 taxpayers to finish their form 1040? Would you find this unusual? no O yes e. What is the z-score/how many standard deviations away is 12 hours for one tax-payer? What is the probability that it would take one person over 12 hours to finish their form 1040? Would you find this unusual? yesConsider the following Binomial Experiment: 180 people have been exposed to the flu. If the probability that a person contracting the flu on exposure is 0.37, find the variance of these 180 peopl. contracting the flu. a) O306.4865 b) 041.9580 c) O 0.2331 d) O 24.6420 e) O 113.4000 f) ONone of the above. Review Later
- Consider the following binomial experiment: A company owns 16 copiers. The probability that on a given day any one copier will break down is 11/100. Find the mean number of copiers that will break down on any given day. A) 1.45 B) 1.10 C) 1.60 D) 1.76 E) 0.183The election returns showed that Letty Doblado received 65% of the votes. What is the probability that two random samples, each consisting of 200 voters, indicated a greater than 10% difference in proportion that voted for her? A) .0410 B) .09590 C) .0459 D) .0541
- The probability is 0.4 that a traffic fatality involves an intoxicated or alcohol-impaired driver or nonoccupant. In six traffic fatalities, find the probability that the number, Y, which involve an intoxicated or alcohol-impaired driver or nonoccupant is a. exactly three; at least three; at most three. b. between two and four, inclusive. c. Find and interpret the mean of the random variable Y. a. The probability that exactly three traffic fatalities involve an intoxicated or alcohol-impaired driver or nonoccupant is nothing. (Round to four decimal places as needed.) The probability that at least three traffic fatalities involve an intoxicated or alcohol-impaired driver or nonoccupant is nothing. (Round to four decimal places as needed.) The probability that at most three traffic fatalities involve an intoxicated or alcohol-impaired driver or nonoccupant is nothing. (Round to four decimal places as needed.) b. The probability that between two and four…A poll asked people with and without children under 18 years old if they frequently experienced stress. The results are shown in the accompanying table. Complete parts (a) through (c) below. Frequently Experience Stress Yes No Total With child under 296 234 530 18 уears No child under 196 314 510 18 years Total 492 548 1040 a. Find the probability that a randomly chosen person from this group said "Yes," given that the person has a child under 18 years old. (Type an integer or decimal rounded to four decimal places as needed.) b. Find the probability that a randomly chosen person from this group said "Yes," given that the person does not have a child under 18 years old. (Type an integer or decimal rounded to four decimal places as needed.) c. Find the probability that a randomly chosen person from this group said "Yes" or had a child under 18 years old. (Type an integer or decimal rounded to four decimal places as needed.)