3.27 Underage drinking, Part II: We learned in Exercise 3.25 that about 69.7% of 18-20 year oldsconsumed alcoholic beverages in 2008. We now consider a random sample of fifty 18-20 year olds.(a) How many people would you expect to have consumed alcoholic beverages?(round to one decimal place)What is the standard deviation?(round to two decimal places)(b) Would you be surprised if there were 45more people who have consumed alcoholic beverages?O No, it is just as likely as any other outcomeO Yes, 45 out of 50 is 90%Yes, 45 is more than two standard deviations above the expected value (mean)No, 45 or more accounts for six different events -- this wouldn't be surprising(C) What is the probability that 45 or more people in this sample have consumed alcoholic beverages?(round to four decimal places)

Name: 3.27 Underage drinking, Part II: We learned in Exercise 3.25 that abo
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: 3.27 Underage drinking, Part II: We learned in Exercise 3.25 that about 69.7% of 18-20 year oldsconsumed alcoholic beverages in 2008. We now consider a random sample of fifty 18-20 year olds.(a) How many people would you expect to have consumed alco

Given: Sample space, n=50. Probability of people consumed alcoholic beverages is, p=69.7%=0.697.…

Math

Probability

3.27 Underage drinking, Part II: We learned in Exercise 3.25 that about 69.7% of 18-20 year olds consumed alcoholic beverages in 2008. We now consider a random sample of fifty 18-20 year olds. (a) How many people would you expect to have consumed alcoholic beverages? (round to one decimal place) What is the standard deviation? (round to two decimal places) (b) Would you be surprised if there were 45 or more people who have consumed alcoholic beverages? O No, it is just as likely as any other outcome Yes, 45 out of 50 is 90% O Yes, 45 is more than two standard deviations above the expected value (mean) O No, 45 or more accounts for six different events -- this wouldn't be surprising (c) What is the probability that 45 or more people in this sample have consumed alcoholic beverages? (round to four decimal places)

3.27 Underage drinking, Part II: We learned in Exercise 3.25 that about 69.7% of 18-20 year olds consumed alcoholic beverages in 2008. We now consider a random sample of fifty 18-20 year olds. (a) How many people would you expect to have consumed alcoholic beverages? (round to one decimal place) What is the standard deviation? (round to two decimal places) (b) Would you be surprised if there were 45 or more people who have consumed alcoholic beverages? O No, it is just as likely as any other outcome Yes, 45 out of 50 is 90% O Yes, 45 is more than two standard deviations above the expected value (mean) O No, 45 or more accounts for six different events -- this wouldn't be surprising (c) What is the probability that 45 or more people in this sample have consumed alcoholic beverages? (round to four decimal places)

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

At one college, GPA's are normally distributed with a mean of 3 and a standard deviation of 0.6. Fill in the blanks, 99.7% of GPAs are between ____ and ____. A. 1.8, 4.2 B. 3, 3.6 C. 2.4, 3.6 D. 1.2, 4.8
Electricity bills: According to a government energy agency, the mean monthly household electricity bill in the United States in 2011 was $108.87 . Assume the amounts are normally distributed with standard deviation $18.00 . Use the TI-84 Plus calculator to answer the following. (a) What proportion of bills are greater than $134 ? (b) What proportion of bills are between $83 and $145 ? (c) What is the probability that a randomly selected household had a monthly bill less than $118 ? Round the answers to at least four decimal places. Part 1 of 3 The proportion of bills that are greater than $134 is . Part 2 of 3 The proportion of bills that are between $83 and $145 is . Part 3 of 3 The probability that a randomly selected household had a monthly bill less than $118 is .
In a recent year, 11th grade New York public school students taking an English test produced test scores that were normally distributed with a mean of 84 and a standard deviation of 7.2. Let x be a random variable that represents a test score. What is the lowest score that would still place a student in the top 30% of the scores? A. 85.82 B. 87.78 C. 82.52 D. 79.47
Answer these question
Electricity bills: According to a government energy agency, the mean monthly household electricity bill in the United States in 2011 was $108.87 . Assume the amounts are normally distributed with standard deviation $18.00 . Use the TI-84 Plus calculator to answer the following. (a) What proportion of bills are greater than $134 ? (b) What proportion of bills are between $83 and $145 ? (c) What is the probability that a randomly selected household had a monthly bill less than $118 ? Round the answers to at least four decimal places. Part 1 of 3 The proportion of bills that are greater than $134 is . Part 2 of 3 The proportion of bills that are between $83 and $145 is . Part 3 of 3 The probability that a randomly selected household had a monthly bill less than $118 is .
A store manager claims that the mean amount of time customers spend waiting in line is less than the 3.7 minutes. You wish to test this claim. The mean waiting time for a random sample of 85 customers is 3.3 minutes with a standard deviation of 0.8 minutes. What is the test statistic? -0.50 O 1.645 -4.61 4.61
The table below gives the number of hours spent watching TV last week by a sample of 24 children. 83 49 57 34 55 78 43 53 69 22 23 50 20 80 70 22 26 22 31 30 51 79 93 19 Range = Standard Deviation = Round your answers to the nearest hundredth as needed.
A successful basketball player has a height of 6 feet 11 inches, or 211 cm. Based on statistics from a data set, his height converts to the z score of 5.17. How many standard deviations is his height above the mean?
you are interested in how many hours students study for a statistics exam each week and collect data from a small sample of students. you want this information to generalize to a larger population. the scores in your data set (representing hours of studying per week) include the following: 10,15, 12, 18, 19, 16, and 12. the standard deviation for this set of scores is ____. enter your answer rounded to two decimal places (i.e., 10.11, not 10, not 10.1, not 10.110)