Q5) A person who conducts telephone surveys must complete 3 more surveys before the end of their shift. For each randomly dialed number, there is a 9% chance of reaching a person who completes the survey. a) What is the probability that the 3rd completed survey will occur on the 10th call? b) What is the probability that more than three completed surveys will occur in 10 calls? c) Draw a diagram of the distribution of surveys completed in 10 calls specifying their mean value and standard deviation (It is recommended to use formula for mean and standard).

Q5) A person who conducts telephone surveys must complete 3 more surveys before the end of their shift. For each randomly dialed number, there is a 9% chance of reaching a person who completes the survey. a) What is the probability that the 3rd completed survey will occur on the 10th call? b) What is the probability that more than three completed surveys will occur in 10 calls? c) Draw a diagram of the distribution of surveys completed in 10 calls specifying their mean value and standard deviation (It is recommended to use formula for mean and standard).

Name: Q5) A person who conducts telephone surveys must complete 3 more surv
Uploaded: 2024-03-20T07:06:41.000Z
Channel: Bartleby
Description: Q5) A person who conducts telephone surveys must complete 3 more surveys beforethe end of their shift. For each randomly dialed number, there is a 9% chance ofreaching a person who completes the survey.a) What is the probability that the 3rd complet

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

A rare form of malignant tumor occurs in 11 children in a million, so its probability is 0.000011. Four cases of this tumor occurred in a certain town, which had 14,270 children. a. Assuming that this tumor occurs as usual, find the mean number of cases in groups of14,270children. b. Using the unrounded mean from part(a),find the probability that the number of tumor cases in a group of14,270children is 0 or 1. c. What is the probability of more than one case? d. Does the cluster of four cases appear to be attributable to random chance? Why or why not?
A cardiologist is interested in the mean recovery time of her patients who have had heart attacks. Suppose the cardiologist has a total of 52 patients and among those, 30 patients have had heart attacks. The study records 10 patients' recovery times, what is the sample size? 10 None of the above 52 3
1. Of all freshman at a Snow college, 16% made the dean's list in the current year. As part of a class project, students randomly sample 40 freshman and check if those students made the list. Calculate the probability your sample has more than 8 students from the dean's list. Check conditions (if one doesn't check out, note your concern and continue anyway), describe sampling distribution, state probability.
A stem-and-leaf plot for the number of touchdowns scored by all Division 1A football teams is shown below. Complete parts (a) through (c). a) If a team is selected at random, find the probability the team scored at least 30 touchdowns. b)if a steam is selected at random,find the probability the team scored between 40 and 48 touchdowns inclusive . c)if a team is selected at random,find the probability the team scored more than 78 touchdowns. are. Any of these events unusual? 1 3 4 5 7 8 8 Key:1|5equals=15 2 0 1 2 2 3 4 5 7 8 8 9 3 0 0 1 1 1 2 2 3 3 4 4 5 5 7 7 7 8 9 4 0 0 1 2 2 3 4 5 5 5 5 6 7 8 8 9 5 0 2 3 5 5 7 8 6 1 3 6 7 7 8 7
3. In a job fair, 3 000 applicants applied for a job. Their mean age was found to be 28 with a standard deviation of 4 years. a) Draw a normal curve distribution showing the z-scores and the raw scores. b) How many applicants are below 20 years old? c) How many applicants are above 32 years old? d) How many have ages between 24 and 32 years? ·e) Find the ages such that 75% is below it. 5. Five hundred children participated in a field demonstration. Their heights averaged 110 cm with standard deviation of 6 cm. a) What is the probability that a child, picked at a random, has a height greater than 116 cm? b) What is the probability that the height of a child picked at a random, is less than 104 cm. c) How many children belong to the upper 15% of the group?
A rare form of malignant tumor occurs in 11 children in a million, so its probability is 0.000011. Four cases of this tumor occurred in a certain town, which had 12,640 children. a. Assuming that this tumor occurs as usual, find the mean number of cases in groups of 12,640 children. b. Using the unrounded mean from part (a), find the probability that the number of tumor cases in a group of 12,640 children is 0 or 1. c. What is the probability of more than one case? d. Does the cluster of four cases appear to be attributable to random chance? Why or why not?
Compute the mean weight of a sample of seven chickens selected at random from a large poultry. the chickens weigh: 8,12,9,11.5,8.5,9.5,10( pounds)
A rare form of malignant tumor occurs in 11 children in a million, so its probability is 0.000011. Four cases of this tumor occurred in a certain town, which had 16,325 children. a. Assuming that this tumor occurs as usual, find the mean number of cases in groups of 16,325 children. b. Using the unrounded mean from part (a), find the probability that the number of tumor cases in a group of 16,325 children is 0 or 1. c. What is the probability of more than one case? d. Does the cluster of four cases appear to be attributable to random chance? Why or why not? a. The mean number of cases is (Type an integer or decimal rounded to three decimal places as needed.)
3. A company produces boxes of candy that contain a mean of 50 candies each. The standard deviation is 2. Quality control will reject any box with fewer than 48 candies. a) What is the probability that a box selected at random contains exactly 51 pieces? b) What proportion of the boxes will quality control reject as containing too few candies? c) The company produces 135 000 boxes of candy a day. How many of these boxes will have at least 48 candies but no more than 53?
In a statistics class, 10 scores were randomly selected, and the following results were obtained: 74, 73, 77, 77, 71, 68, 65, 77, 67, 66 What is the 90thpercentile? What is the first quartile (or 25thpercentile)? What is the third quartile (or 75thpercentile)?
12). What is a percentile? In probability notation, how would you find the 85th percentile?