Essential Statistics
2nd Edition
ISBN: 9781259570643
Author: Navidi
Publisher: MCG
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Chapter 4.3, Problem 61E
To determine
Compute the
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The number of students taking the Scholastic Aptitude Test (SAT) has risen to an all-time high of more than 1.5 million (College Board, August 26, 2008). Students are allowed to repeat the test in hopes of improving the score that is sent to college and university admission offices. The number of times the SAT was taken and the number of students are as follows.
Number of Times
Number of Students
1
721,769
2
601,325
3
166,736
4
22,299
5
6,730
Q-1 What is the probability that a student takes the SAT more than one time?
Q-2
Refer to the data and probabilities in question 8.
What is the probability that a student takes the SAT three or more times?
The number of students taking the Scholastic Aptitude Test (SAT) has risen to an all-time high of more than 1.5 million (College Board, August 26, 2008). Students are allowed to repeat the test in hopes of improving the score that is sent to college and university admission offices. The number of times the SAT was taken and the number of students are as follows.
Number of Times
Number of Students
1
721,769
2
601,325
3
166,736
4
22,299
5
6,730
Let x be a random variable indicating the number of times a student takes the Show the probability distribution for this random variable.
The number of students taking the Scholastic Aptitude Test (SAT) has risen to an all-time high of more than1.5 million (College Board, August 26, 2008). Students are allowed to repeat the test in hopes of improving the score that is sent to college and university admission offices. The number of times the SAT was taken and the number of students are as follows.
Number of Times
Number of Students
1
721,769
2
601,325
3
166,736
4
22,299
5
6,730
What is the probability that a student takes the SAT more than one time?
Chapter 4 Solutions
Essential Statistics
Ch. 4.1 - 1. In Example 4.4, what is the probability that...Ch. 4.1 - Prob. 2CYUCh. 4.1 - Prob. 3CYUCh. 4.1 - Prob. 4CYUCh. 4.1 - Prob. 5ECh. 4.1 - In Exercises 5–8, fill in each blank with the...Ch. 4.1 - Prob. 7ECh. 4.1 - In Exercises 5–8, fill in each blank with the...Ch. 4.1 - Prob. 9ECh. 4.1 - Prob. 10E
Ch. 4.1 - Prob. 11ECh. 4.1 - Prob. 12ECh. 4.1 - Prob. 13ECh. 4.1 - Prob. 14ECh. 4.1 - Prob. 15ECh. 4.1 - Prob. 16ECh. 4.1 - Prob. 17ECh. 4.1 - Prob. 18ECh. 4.1 - Prob. 19ECh. 4.1 - Prob. 20ECh. 4.1 - Prob. 21ECh. 4.1 - In Exercises 21–24, assume that a coin is tossed...Ch. 4.1 - Prob. 23ECh. 4.1 - In Exercises 21–24, assume that a coin is tossed...Ch. 4.1 - How probable is it? Someone computes the...Ch. 4.1 - Prob. 26ECh. 4.1 - Prob. 27ECh. 4.1 - Prob. 28ECh. 4.1 - Prob. 29ECh. 4.1 - 30. A coin flip: A fair coin is tossed three...Ch. 4.1 - 31. Empirical Method: A coin is tossed 400 times...Ch. 4.1 - Prob. 32ECh. 4.1 - Prob. 33ECh. 4.1 - Prob. 34ECh. 4.1 - Prob. 35ECh. 4.1 - Prob. 36ECh. 4.1 - Prob. 37ECh. 4.1 - Prob. 38ECh. 4.1 - 39. Get an education: The General Social Survey...Ch. 4.1 - Prob. 40ECh. 4.1 - 41. Hospital visits: According to the Agency for...Ch. 4.1 - Prob. 42ECh. 4.1 - Prob. 43ECh. 4.1 - Prob. 44ECh. 4.1 - Prob. 45ECh. 4.1 - Prob. 46ECh. 4.1 - Prob. 47ECh. 4.1 - Prob. 48ECh. 4.1 - Prob. 49ECh. 4.2 - Prob. 1CYUCh. 4.2 - Prob. 2CYUCh. 4.2 - Prob. 3CYUCh. 4.2 - Prob. 4CYUCh. 4.2 - Prob. 5ECh. 4.2 - In Exercises 5–8, fill in each blank with the...Ch. 4.2 - In Exercises 5–8, fill in each blank with the...Ch. 4.2 - In Exercises 5–8, fill in each blank with the...Ch. 4.2 - Prob. 9ECh. 4.2 - Prob. 10ECh. 4.2 - Prob. 11ECh. 4.2 - Prob. 12ECh. 4.2 - Prob. 13ECh. 4.2 - Prob. 14ECh. 4.2 - Prob. 15ECh. 4.2 - 16. If P (A) = 0.7, P (B) = 0.1, and A and B are...Ch. 4.2 - Prob. 17ECh. 4.2 - Prob. 18ECh. 4.2 - Prob. 19ECh. 4.2 - 20. If P(B) = 0.6, find P(Bc).
Ch. 4.2 - Prob. 21ECh. 4.2 - Prob. 22ECh. 4.2 - Prob. 23ECh. 4.2 - Prob. 24ECh. 4.2 - Prob. 25ECh. 4.2 - In Exercises 25–30, determine whether events A and...Ch. 4.2 - Prob. 27ECh. 4.2 - Prob. 28ECh. 4.2 - In Exercises 25–30, determine whether events A and...Ch. 4.2 - In Exercises 25–30, determine whether events A and...Ch. 4.2 - In Exercises 31 and 32, find the complements of...Ch. 4.2 - In Exercises 31 and 32, find the complements of...Ch. 4.2 - Prob. 33ECh. 4.2 - Prob. 34ECh. 4.2 - Prob. 35ECh. 4.2 - 36. Sick computers: Let V be the event that a...Ch. 4.2 - Prob. 37ECh. 4.2 - Prob. 38ECh. 4.2 - Prob. 39ECh. 4.2 - 40. Statistics grades: In a statistics class of 30...Ch. 4.2 - Prob. 41ECh. 4.2 - Prob. 42ECh. 4.2 - Prob. 43ECh. 4.2 - Prob. 44ECh. 4.2 - Prob. 45ECh. 4.2 - Prob. 46ECh. 4.2 - 47. Mutual exclusivity is not transitive: Give an...Ch. 4.2 - 48. Complements: Let A and B be events. Express (A...Ch. 4.3 - 1. A person is selected at random from the...Ch. 4.3 - Prob. 2CYUCh. 4.3 - Prob. 3CYUCh. 4.3 - Prob. 4CYUCh. 4.3 - Prob. 5CYUCh. 4.3 - Prob. 6CYUCh. 4.3 - Prob. 7ECh. 4.3 - Prob. 8ECh. 4.3 - In Exercises 7–10, fill in each blank with the...Ch. 4.3 - In Exercises 7–10, fill in each blank with the...Ch. 4.3 - Prob. 11ECh. 4.3 - In Exercises 11–14, determine whether the...Ch. 4.3 - Prob. 13ECh. 4.3 - Prob. 14ECh. 4.3 - Prob. 15ECh. 4.3 - Prob. 16ECh. 4.3 - Prob. 17ECh. 4.3 - 18. Let A and B be events with P(A) = 0.5 and P(B)...Ch. 4.3 - 19. Let A and B be events with P (A) = 0.8, P(B) =...Ch. 4.3 - 20. Let A and B be events with P(A) = 0.3, P(B) =...Ch. 4.3 - Prob. 21ECh. 4.3 - Prob. 22ECh. 4.3 - Prob. 23ECh. 4.3 - Prob. 24ECh. 4.3 - Prob. 25ECh. 4.3 - Prob. 26ECh. 4.3 - Prob. 27ECh. 4.3 - In Exercises 27–30, assume that a student is...Ch. 4.3 - Prob. 29ECh. 4.3 - Prob. 30ECh. 4.3 - Prob. 31ECh. 4.3 - 32. Let A and B be events with P(A) = 0.6, P(B) =...Ch. 4.3 - Prob. 33ECh. 4.3 - Prob. 34ECh. 4.3 - Prob. 35ECh. 4.3 - Prob. 36ECh. 4.3 - Job interview: Seven people, named Anna, Bob,...Ch. 4.3 - Prob. 38ECh. 4.3 - Prob. 39ECh. 4.3 - 40. U.S. senators: The following table displays...Ch. 4.3 - Prob. 41ECh. 4.3 - Prob. 42ECh. 4.3 - Prob. 43ECh. 4.3 - Prob. 44ECh. 4.3 - Prob. 45ECh. 4.3 - Prob. 46ECh. 4.3 - Prob. 47ECh. 4.3 - Prob. 48ECh. 4.3 - Prob. 49ECh. 4.3 - Prob. 50ECh. 4.3 - Prob. 51ECh. 4.3 - Prob. 52ECh. 4.3 - Prob. 53ECh. 4.3 - Prob. 54ECh. 4.3 - Prob. 55ECh. 4.3 - Prob. 56ECh. 4.3 - Prob. 57ECh. 4.3 - Prob. 58ECh. 4.3 - Prob. 59ECh. 4.3 - Prob. 60ECh. 4.3 - Prob. 61ECh. 4.3 - Prob. 62ECh. 4.3 - Prob. 63ECh. 4.3 - Prob. 64ECh. 4.3 - Prob. 65ECh. 4.4 - When ordering a certain type of computer, there...Ch. 4.4 - Prob. 2CYUCh. 4.4 - Prob. 3CYUCh. 4.4 - Refer to Exercise 3. Two of the committee members...Ch. 4.4 - Prob. 5CYUCh. 4.4 - Refer to Exercise 5. Four of the eight students...Ch. 4.4 - Prob. 7ECh. 4.4 - In Exercises 7 and 8, fill in the blank with the...Ch. 4.4 - Prob. 9ECh. 4.4 - In Exercises 9 and 10, determine whether the...Ch. 4.4 - Prob. 11ECh. 4.4 - In Exercises 11–16, evaluate the factorial. 12. 5!Ch. 4.4 - Prob. 13ECh. 4.4 - Prob. 14ECh. 4.4 - Prob. 15ECh. 4.4 - In Exercises 11–16, evaluate the factorial. 16. 3!Ch. 4.4 - Prob. 17ECh. 4.4 - Prob. 18ECh. 4.4 - Prob. 19ECh. 4.4 - Prob. 20ECh. 4.4 - Prob. 21ECh. 4.4 - Prob. 22ECh. 4.4 - Prob. 23ECh. 4.4 - In Exercises 23–28, evaluate the combination. 24....Ch. 4.4 - Prob. 25ECh. 4.4 - In Exercises 23–28, evaluate the combination. 26....Ch. 4.4 - Prob. 27ECh. 4.4 - In Exercises 23–28, evaluate the combination. 28....Ch. 4.4 - Prob. 29ECh. 4.4 - Books: Josephine has six chemistry books, three...Ch. 4.4 - Prob. 31ECh. 4.4 - 32. Ice cream: A certain ice cream parlor offers...Ch. 4.4 - License plates: In a certain state, license plates...Ch. 4.4 - Committee: The Student Council at a certain school...Ch. 4.4 - Day and night shifts: A company has hired 12 new...Ch. 4.4 - Keep your password safe: A computer password...Ch. 4.4 - It’s in your genes: Human genetic material (DNA)...Ch. 4.4 - Choosing officers: A committee consists of ten...Ch. 4.4 - Prob. 39ECh. 4.4 - Blackjack: In single-deck casino blackjack, the...Ch. 4.4 - Prob. 41ECh. 4.4 - Prob. 42ECh. 4.4 - Prob. 43ECh. 4 - Fill in the blank: The probability that a fair...Ch. 4 - Prob. 2CQCh. 4 - Prob. 3CQCh. 4 - Prob. 4CQCh. 4 - Prob. 5CQCh. 4 - Prob. 6CQCh. 4 - Prob. 7CQCh. 4 - Prob. 8CQCh. 4 - Prob. 9CQCh. 4 - Prob. 10CQCh. 4 - Prob. 11CQCh. 4 - Prob. 12CQCh. 4 - Prob. 13CQCh. 4 - Prob. 14CQCh. 4 - Prob. 15CQCh. 4 - Prob. 1RECh. 4 - Prob. 2RECh. 4 - Prob. 3RECh. 4 - Blood types: Human blood may contain either or...Ch. 4 - Prob. 5RECh. 4 - Stop that car: A drag racer has two parachutes, a...Ch. 4 - Prob. 7RECh. 4 - Music to my ears: Jeri is listening to the songs...Ch. 4 - Prob. 9RECh. 4 - Prob. 10RECh. 4 - Rainy weekend: Sally is planning to go away for...Ch. 4 - Prob. 12RECh. 4 - Required courses: Refer to Exercise 12. Assume the...Ch. 4 - Bookshelf: Bart has six books: a novel, a...Ch. 4 - Bookshelf: Refer to Exercise 14. Bart chooses...Ch. 4 - Prob. 1WAICh. 4 - Prob. 2WAICh. 4 - Prob. 3WAICh. 4 - Prob. 4WAICh. 4 - Prob. 5WAICh. 4 - Prob. 6WAICh. 4 - Describe circumstances under which you would use a...Ch. 4 - Describe circumstances under which you would use a...Ch. 4 - The following table is a life table, reproduced...Ch. 4 - Prob. 2CSCh. 4 - Prob. 3CSCh. 4 - Prob. 4CSCh. 4 - Prob. 5CSCh. 4 - Prob. 6CSCh. 4 - Prob. 7CSCh. 4 - Prob. 8CSCh. 4 - Prob. 9CS
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