A true/false test has 100 questions. Using the normal approximation to the binomial distribution, what is the probability of getting 55 or more correct by just guessing? a) .05 b) .16 c) .26 d) .5
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A true/false test has 100 questions. Using the normal approximation to the binomial distribution, what is the
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- The probability is 0.35 that a traffic fatality involves an intoxicated or alcohol-impaired driver or nonoccupant. In nine 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. d. Obtain the standard deviation of Y. a. The probability that exactly three traffic fatalities involve an intoxicated or alcohol-impaired driver or nonoccupant is enter your response here. (Round to four decimal places as needed.) Part 2 The probability that at least three traffic fatalities involve an intoxicated or alcohol-impaired driver or nonoccupant is enter your response here. (Round to four decimal places as needed.) Part 3 The probability that at most three traffic fatalities involve an intoxicated or alcohol-impaired driver or nonoccupant is enter your…Note: Answer number 3 letter b only.a.) The probability that the sample mean weight of this sample of 20 is greater than 9.75 is _____? b.) The probability that the sample mean weight of this sample of 20 is between 9.75 and 9.89 is ____? c.) There is only a 5% chance that the average weight of a sample of these 20 cheese wedges will be below _____ (answer the blanks)
- Based on a poll, among adults who regret getting tattoos, 28% say that they were too young when they got their tattoos. Assume that eighteight adults who regret getting tattoos are randomly selected, and find the indicated probability. Complete parts (a) through (d) below. a. Find the probability that none of the selected adults say that they were too young to get tattoos.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) 0.18The probability is 0.35 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. d. Obtain the standard deviation of Y. Only typing answer Please explain step by step
- The 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) .0541The 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…The mean height of women in a country (ages 20 −29) is 63.6 inches. A random sample of 55 women in this age group is selected. What is the probability that the mean height for the sample is greater than 64 inches? Assume σ= 2.65
- What requirement must be met to be a true random sample? A.The probability of selecting one individual is independent of selecting another individual. B. The probability of being selected stays constant from one selection to another. C. Each individual has an equal chance of being selected for the sample. D. All of the answers are correct. E. Sampling is done with replacement.5) An experiment has outcomes 2, 3, 4, 5, and 6, with the probabilities as shown below. .35 .2 ? .25 .05 2 3 4 5 6 a) b) c) p(x) X Find the missing p(x). Determine the mean and standard deviation. Calculate the probability of having an outcome greater than 3.
