Question
In: Statistics and Probability
End of Section Problem 12.46 A corporation owns several companies. The strategic planner for the corporation...
End of Section Problem 12.46 A corporation owns several companies. The strategic planner for the corporation believes dollars spent on advertising can to some extent be a predictor of total sales dollars. As an aid in long-term planning, she gathers the following sales and advertising information from several of the companies for 2011 ($ millions). Advertising Sales 12.5 148 3.7 55 21.6 338 60.0 994 37.6 541 6.1 89 16.8 126 41.2 379 a. Construct a 98% confidence interval for the average value of y for the given data; use x = 20, se = 108.8, and the equation of the regression line, . b. Construct a 98% prediction interval for a single value of y for the given data; use x = 20, se = 108.8, and the equation of the regression line, . c. Which is wider? Why? (Do not round the intermediate values. Round answers to 2 decimal places.) a. ≤ E(y20) ≤ b. ≤ y ≤ c. The confidence interval for the is wider than the confidence interval for the because the average is more towards the and individual values of y
Solutions
orchestra answered 2 years agoRelated Solutions
A corporation owns several companies. The strategic planner for the corporation believes dollars spent on advertising...
A corporation owns several companies. The strategic planner for
the corporation believes dollars spent on advertising can to some
extent be a predictor of total sales dollars. As an aid in
long-term planning, she gathers the following sales and advertising
information from several of the companies for 2009 ($
millions).
Advertising:
12.5
3.7
21.6
60
37.6
6.1
16.8
41.2
Sales:
148
55
338
994
541
89
126
379
Develop the equation of the simple regression line to predict
sales from...
A corporation owns several companies. The strategic planner for the corporation believes dollars spent on advertising...
A corporation owns several companies. The strategic
planner for the corporation believes dollars spent on advertising
can to some extent be a predictor of total sales dollars. As an aid
in long-term planning, she gathers the following sales and
advertising information from several of the companies for 2017 (in
millons)
advertising($12.5 , 3.7 ,21.0 ,60.0 ,37.6 ,6.1 ,17.9 ,41.2 )
sales($141, 55 ,338 ,994 ,541 ,89 ,126 ,379)
Construct a 98% confidence interval for the average
value of y for the given...
A corporation owns several companies. The strategic planner for the corporation believes amount spent on advertising...
A corporation owns several companies. The strategic planner for
the corporation believes amount spent on advertising can to some
extent be a predictor of total sales. As an aid in long term
planning, she gathers the following sales and advertising
information from several of the companies in millions for the year
2019.
Advertising
12.5
3.7
21.6
60.0
37.6
6.1
16.8
41.2
Sales
148
55
338
994
541
89
126
379
Develop the equation of the simple regression line to predict...
A corporation owns several companies. The strategic planner for the corporation believes amount spent on advertising...
A corporation owns several companies. The strategic planner for
the corporation believes amount spent on advertising can to some
extent be a predictor of total sales. As an aid in long term
planning, she gathers the following sales and advertising
information from several of the companies in millions for the year
2019.
Advertising
12.5
3.7
21.6
60.0
37.6
6.1
16.8 41.2
Sales
148
55
338
994
541
89
126 379
Develop the equation of the simple regression...
You are given the following schemas for a corporation database. The corporation owns several subsidiary companies...
You are given the following schemas for a corporation database.
The corporation owns several subsidiary companies (e.g. Disney
Corporation owns Lucasfilm Ltd). Managers are also Employees.
Answer the following questions using the schemas.
Employee(ssn, name, street, city)
Company(company_name, asset)
Company_Branches(company_name, branch_num, city)
Works(ssn, company_name, branch_num, salary)
Managed_By(ssn, manager_ssn)
6) Does the current design allow us to enforce the constraint
that each employee must have a manager (without using external
check or triggers)? Why or why not?
7) If the answer...
Planner Corporation owns 60 percent of Schedule Company’s voting shares. During 20X3, Planner produced 25,000 computer...
Planner Corporation owns 60 percent of Schedule Company’s voting
shares. During 20X3, Planner produced 25,000 computer desks at a
cost of $82 each and sold 10,000 of them to Schedule for $94 each.
Schedule sold 7,000 of the desks to unaffiliated companies for $130
each prior to December 31, 20X3, and sold the remainder in early
20X4 for $140 each. Both companies use perpetual inventory
systems.
Required:
a. What amounts of cost of goods sold did Planner and Schedule
record...
Planner Corporation owns 60 percent of Schedule Company’s voting shares. During 20X3, Planner produced 27,000 computer...
Planner Corporation owns 60 percent of Schedule Company’s voting
shares. During 20X3, Planner produced 27,000 computer desks at a
cost of $96 each and sold 12,000 of them to Schedule for $108 each.
Schedule sold 8,000 of the desks to unaffiliated companies for $136
each prior to December 31, 20X3, and sold the remainder in early
20X4 for $146 each. Both companies use perpetual inventory
systems.
Required:
a. What amounts of cost of goods sold did Planner and Schedule
record...
What are the characteristics of a good strategic planner?
What are the characteristics of a good strategic planner?
At the end of 2020, Bridgeport Corporation owns a licence with a remaining life of 10...
At the end of 2020, Bridgeport Corporation owns a licence with a
remaining life of 10 years and a carrying amount of $528,000.
Bridgeport expects undiscounted future cash flows from this licence
to total $532,500. The licence’s fair value is $423,000 and
disposal costs are estimated to be nil. The licence’s discounted
cash flows (that is, value in use) are estimated to be $477,700.
Bridgeport prepares financial statements in accordance with IFRS.
Determine if the licence is impaired at the...
A corporation owns a chain of several hundred gas stations in the Atlantic provinces. The marketing...
A corporation owns a chain of several hundred gas stations in
the Atlantic provinces. The marketing director wants to test a
proposed marketing campaign by running ads on some local radio
stations and determining whether gas sales at a randomly selected
sample of the company’s stations increase after the advertising.
The following data represent gas sales in hundreds of dollars for a
day before and two weeks after the advertising campaign.
Station 1 2 3 4 5 6 7
Before...
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