Question
In: Advanced Math
A survey of 77 customers was taken at a bookstore regarding the types of books purchased....
A survey of 77 customers was taken at a bookstore regarding the types of books purchased. The survey found that 46 customers purchased MYSTERIES, 38 purchased SCIENCE FICTION, 32 purchased ROMANCE NOVELS, 20 purchased MYSTERIES AND SCIENCE FICTION, 17 purchased MYSTERIES AND ROMANCE NOVELS, 13 purchased SCIENCE FICTION AND ROMANCE NOVELS, and 6 purchased all three types of books.
a). how many of the customers surveyed purchased only mysteries?
b). how many purchased mysteries and science fiction, but not romance novels?
c). how many people purchased mysteries or science fiction?
d). how many people purchased mysteries or science fiction, but not romance novels?
e). how many purchased exactly two types of books?
Solutions
Colby Messinger answered 6 months agoRelated Solutions
A random sample of 200 books purchased at a local bookstore showed that 72 of the...
A random sample of 200 books purchased at a local bookstore
showed that 72 of the books were murder mysteries. Let ?? be the
true proportion of books sold by this store that are murder
mysteries. Test the claim at the 1% level of significance that half
of the books are sold.
a) Details given in the problem:
b) Assumptions (if any):
c) Null, Alternate Hypotheses and the tail test?
H0:
H1:
Tail?
d) Find the Critical Statistic (Table value)...
A random sample of 200 books purchased at a local bookstore showed that 72 of the...
A random sample of 200 books purchased at a local bookstore
showed that 72 of the books were murder mysteries. Let p be the
true proportion of books sold by this store that is murder mystery.
Construct a confidence in terval with a 95% degree of
confidence.Compute the following:
a.Point estimate
b.Critical value
c.Margin of error
d.Confidence interval
e.Interpretation(confidence statement).
Consider the following database schema for a BOOKSTORE database: Books (bookid, title, author, year) Customers (customerid,...
Consider the following database schema for a BOOKSTORE
database:
Books (bookid, title, author, year)
Customers (customerid, name, email)
Purchases (customerid, bookid, year)
Reviews (customerid, bookid, rating)
Pricing (bookid, format, price)
The Books relation stores information about books sold by the
bookstore. Note that bookid is the primary key. An example tuple is
as follows:
(105, 'JAVA PROGRAMMING', 'JOHN DOE', 2001)
The Customers relation stores information about the customers of
the bookstore. Note that customerid is the primary key. An example...
The director of library services at a college did a survey of types of books (by...
The director of library services at a college did a survey of
types of books (by subject) in the circulation library. Then she
used library records to take a random sample of 888 books checked
out last term and classified the books in the sample by subject.
The results are shown below.
Subject
Area
Percent of Books on
Subject in Circulation
Library on This Subject
Number of Books
in
Sample on This Subject
Business
32%
237
Humanities
25%
226
Natural...
The director of library services at a college did a survey of types of books (by...
The director of library services at a college did a survey of
types of books (by subject) in the circulation library. Then she
used library records to take a random sample of 888 books checked
out last term and classified the books in the sample by subject.
The results are shown below.
Subject
Area
Percent of Books on
Subject in Circulation
Library on This Subject
Number of Books
in
Sample on This Subject
Business
32%
288
Humanities
25%
223
Natural...
The director of library services at a college did a survey of types of books (by...
The director of library services at a college did a survey of
types of books (by subject) in the circulation library. Then she
used library records to take a random sample of 888 books checked
out last term and classified the books in the sample by subject.
The results are shown below.
Subject
Area
Percent of
Books on Subject in Circulation
Library on This Subject
Number of
Books in
Sample on This Subject
Business
32%
259
Humanities
25%
228
Natural...
The director of library services at a college did a survey of types of books (by...
The director of library services at a college did a survey of
types of books (by subject) in the circulation library. Then she
used library records to take a random sample of 888 books checked
out last term and classified the books in the sample by subject.
The results are shown below.
Subject
Area
Percent of Books on
Subject in Circulation
Library on This Subject
Number of Books
in
Sample on This Subject
Business
32%
249
Humanities
25%
225
Natural...
The director of library services at a college did a survey of types of books (by...
The director of library services at a college did a survey of
types of books (by subject) in the circulation library. Then she
used library records to take a random sample of 888 books checked
out last term and classified the books in the sample by subject.
The results are shown below.
Subject
Area
Percent of Books on
Subject in Circulation
Library on This Subject
Number of Books
in
Sample on This Subject
Business
32%
265
Humanities
25%
220
Natural...
Super Bookstore is a large city bookstore that sells books and music CDs and has a...
Super Bookstore is a large city bookstore that sells books and
music CDs and has a café. Super Bookstore operates at capacity and
allocates selling, general, and administration (S, G, and A) costs
to each product line using the cost of merchandise of each product
line. Super Bookstore wants to optimize the pricing and cost
management of each product line. The bookstore is wondering whether
its accounting system is providing it with the best information for
making such decisions.
Super...
A survey is taken among customers of a fast-food restaurant to determine preference for hamburger or...
A survey is taken among customers of a fast-food restaurant to
determine preference for hamburger or chicken. Of 200 respondents
selected, 75 were children and 125 were adults. 120 preferred
hamburger and 80 preferred chickens. 55 of the children preferred
hamburger and 20 preferred chickens. Set up a 2x2 contingency table
using this information and answer the following questions:
Age/ Food
Hamburger
Chicken
Total
Child
Adult
Total
200
What is the probability that a randomly selected individual is
an adult?...
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