Question 4 In a large shopping mall, a marketing agency conducted a survey on credit cards....
Question 4
- In a large shopping mall, a marketing agency conducted a survey
on credit cards. The results are shown in the following table:
Employment Status Owns a Credit Card Does Not Own a Credit Card Employed
18
29
Unemployed
28
34
If a person is selected at random, find the probability that the person owns a credit card, given that the person is employed.
a. 9/23
b. 18/47
c. 14/23
d. 7/31
Question 5
-
A lot of portable radios contains five good radios and two defective ones. If two are selected and tested, find the probability that at least one will be defective.
a. 2/5
b. 3/4
c. 5/7
d. 11/21
Question 6
-
The speed of a car is considered a continuous variable.
a. True
b. False
Question 7
-
The number of cups of coffee a fast-food restaurant serves each day is considered a discrete variable.
a. True
b. False
Homework Answers
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Question 4
In a large shopping mall, a marketing agency conducted a survey
on credit cards....
In a shopping mall an average of 3 out of every 5 customers use visa credit...
In a shopping mall an average of 3 out of every 5 customers use visa credit cards. A sample of 10 customers is selected. Find the probability that exactly 6 customers use visa credit card. Find the probability that less than 9 customers use visa credit card. Now assume that a sample of 50 customers are selected. Find the smallest value of n such that P(X<n) ≥ 0.9, where the random variable X represents the number of customers who uses...
the true and false EXERCISES 101 About the Data The Web shopping data in this chapter...
the
true and false
EXERCISES 101 About the Data The Web shopping data in this chapter (and Chapter 3) kitchen preferences Consump- in the United States.) The data for derived from surveys reported by ComScore, a are a subset of the Residential Energy (RECS), performed by the Department of of attitudes toward file sharing are firm that monitors the Web-browsing habits of a tion Survey on airline arrivals in the 4M example of tics. (From the main page, follow the...
In a survey conducted by a reputable marketing agency, 231 of 1000 adults 19 years of...
In a survey conducted by a reputable marketing agency, 231 of 1000 adults 19 years of age or older confessed to bringing and using the cell phone every trip to the bathroom (contessons included testing and answering phone calls Complete parts (a) tough below Click here to view the standard normal distribution table 1). Click here to view the standard romal distrution lean 21 Why is the pointestinale found in part (c) a random variable? DA being used to make...
Question 1 [12 + 4 =16 marks] A. Let A and B be two events such...
Question 1 [12 + 4 =16 marks] A. Let A and B be two events such that P( A) 0.6 , P(B) 0.4 and P( A B) 0.10. Calculate P( A B). Calculate P( A | B). iii. Are events A and B independent? Justify your answer. iv. Are events A and B mutually exclusive events? Justify your answer. (2 + 2 + 3 + 3 = 10 marks) B. A box contains 20 DVDs,...
Question 7 2.38 Points Solve the equation 2x+64=146. Calculate your answer to the nearest whole number....
Question 7 2.38 Points Solve the equation 2x+64=146. Calculate your answer to the nearest whole number. Do not put the x= in your answer. Only put the number value for your answer. Add your answer Question 8 2.38 Points Four teams will receive prize money based on their ticket sales. The total prize amount to be apportioned is $336. Determine the standard divisor based on the ticket sales. The ticket sales are: Applejacks: 54 tickets sold Broncos: 70 tickets sold...
>de 2 Página 1 MATH 120- Online TEST 4 Optional for credit 1. 100 frogs are...
>de 2 Página 1 MATH 120- Online TEST 4 Optional for credit 1. 100 frogs are released into a parkland lake. 80 % are expected to be green and the rest yellow. What is the number of yellow frogs that would be expected? 2. Assuming equally likely events, that is more likely to happen: drawing a card from a deck and getting a face card or being born on a Tuesday? 3. What is the probability of getting 3 heads...
TO SU Part 1: Probability were cay 1. A question on a multiple-choice test has 10...
TO SU Part 1: Probability were cay 1. A question on a multiple-choice test has 10 questions each with 4 possible answers (a,b,c,d). a. What is the probability that you guess all the answers to the 10 questions correctly (carn 100%)? 2. If you ask three strangers about their birthdays, what is the probability a. All were born on Wednesday? b. What is the probability that all three were born in the same month? c. All were born on different...
1) Continuous random variables are obtained from data that can be measured rather than counted. A)...
1) Continuous random variables are obtained from data that can be measured rather than counted. A) True B) False 2) Discrete variables have values that can be measured. A) True B) False 3) Determine whether the random variable described is discrete or continuous. The number of minutes you must wait in line at the grocery store A) continuous B) discrete 4) Determine whether the random variable described is discrete or continuous. The total value of a set of coins A)...
Reliable Housewares is a local store that sells many household items and issues its own credit ca...
Reliable Housewares is a local store that sells many household
items and issues its own credit card to its
customers. The store manager wants to study the purchasing
behavior of its "credit" customers. To that
end, he has come to DeVry and asked our MBA students for help.
The manager has brought with him
data on five variables of 55 randomly selected credit
customers.
LOCATION
(Rural, Urban, Suburban – Household location of the credit
customer)
INCOME
(in $1,000's...
QUESTION 1 A type of data measured in unrestricted measurable quantities is: A. Discrete B. Continuous...
QUESTION 1 A type of data measured in unrestricted measurable quantities is: A. Discrete B. Continuous C. Ordinal D. Nominal 2 points QUESTION 2 One way to control for age as a confounder is to use age-adjusted rates. True False 2 points QUESTION 3 Useful for measuring diseases that are difficult to pinpoint when an individual becomes a case, and for describing the magnitude of a public health problem is the: A. Mortality rate B. Person-time rate C....
the
true and false
EXERCISES 101 About the Data The Web shopping data in this chapter (and Chapter 3) kitchen preferences Consump- in the United States.) The data for derived from surveys reported by ComScore, a are a subset of the Residential Energy (RECS), performed by the Department of of attitudes toward file sharing are firm that monitors the Web-browsing habits of a tion Survey on airline arrivals in the 4M example of tics. (From the main page, follow the...
In a survey conducted by a reputable marketing agency, 231 of 1000 adults 19 years of age or older confessed to bringing and using the cell phone every trip to the bathroom (contessons included testing and answering phone calls Complete parts (a) tough below Click here to view the standard normal distribution table 1). Click here to view the standard romal distrution lean 21 Why is the pointestinale found in part (c) a random variable? DA being used to make...
Question 7 2.38 Points Solve the equation 2x+64=146. Calculate your answer to the nearest whole number. Do not put the x= in your answer. Only put the number value for your answer. Add your answer Question 8 2.38 Points Four teams will receive prize money based on their ticket sales. The total prize amount to be apportioned is $336. Determine the standard divisor based on the ticket sales. The ticket sales are: Applejacks: 54 tickets sold Broncos: 70 tickets sold...
>de 2 Página 1 MATH 120- Online TEST 4 Optional for credit 1. 100 frogs are released into a parkland lake. 80 % are expected to be green and the rest yellow. What is the number of yellow frogs that would be expected? 2. Assuming equally likely events, that is more likely to happen: drawing a card from a deck and getting a face card or being born on a Tuesday? 3. What is the probability of getting 3 heads...
TO SU Part 1: Probability were cay 1. A question on a multiple-choice test has 10 questions each with 4 possible answers (a,b,c,d). a. What is the probability that you guess all the answers to the 10 questions correctly (carn 100%)? 2. If you ask three strangers about their birthdays, what is the probability a. All were born on Wednesday? b. What is the probability that all three were born in the same month? c. All were born on different...
1) Continuous random variables are obtained from data that can be measured rather than counted. A) True B) False 2) Discrete variables have values that can be measured. A) True B) False 3) Determine whether the random variable described is discrete or continuous. The number of minutes you must wait in line at the grocery store A) continuous B) discrete 4) Determine whether the random variable described is discrete or continuous. The total value of a set of coins A)...
Reliable Housewares is a local store that sells many household
items and issues its own credit card to its
customers. The store manager wants to study the purchasing
behavior of its "credit" customers. To that
end, he has come to DeVry and asked our MBA students for help.
The manager has brought with him
data on five variables of 55 randomly selected credit
customers.
LOCATION
(Rural, Urban, Suburban – Household location of the credit
customer)
INCOME
(in $1,000's...
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