According to one survey taken a few years ago, 32% of American households have attempted to reduce
Question:
According to one survey taken a few years ago, 32% of American households have attempted to reduce their long-distance phone bills by switching long-distance companies. Suppose that business researchers want to test to determine if this figure is still accurate today by taking a new survey of 80 American households who have tried to reduce their long-distance bills. Suppose further that of these 80 households, 25% say they have tried to reduce their bills by switching long-distance companies. Is this result enough evidence to state that a significantly different proportion of American households are trying to reduce long-distance bills by switching companies? Let α = .01.
Step by Step Answer:
H 0 p 32 H a p 32 n 80 01 25 z 005 257...View the full answer
Business Statistics For Contemporary Decision Making
ISBN: 978-1118749647
8th edition
Authors: Black Ken
Students also viewed these Statistics questions
-
A few years ago Amazon.com introduced free shipping for U.S. orders over $25. A consumer who bought a single book for less than $25 would pay about $4 in shipping, but if adding a second book to the...
-
A few years ago Amazon.com introduced free shipping for U.S. orders over $25. A consumer who bought a single book for less than $25 would pay about $4 in shipping, but if adding a second book to the...
-
A lawsuit a few years ago made headlines worldwide when a McDonalds drive-through customer spilled a cup of scalding hot coffee on herself. Claiming the coffee was too hot to be safely consumed in a...
-
When is inflation an important issue in conducting case analysis? Why bother?
-
Among the four means of implementation discussed in this chapter, which are easiest to use? Which are most difficult to use? Why?
-
What is the current ratio? What does it indicate? How is the debt-to-asset ratio calculated? What does a high debt-to-asset ratio indicate? How is your savings ratio determined? What does it indicate?
-
Given the Irwin-Hall distribution with pdf, \[f_{Y}(y)=\frac{1}{2(n-1) !} \sum_{k=0}^{n}(-1)^{k}\left(\begin{array}{l}n \\k\end{array} ight)(y-k)^{n-1} \operatorname{sign}(y-k)\] where the sign...
-
Air France-KLM (AF), a Franco-Dutch company, prepares its financial statements according to International Financial Reporting Standards. AF's financial statements and disclosure notes for the year...
-
what is contract services cost of debit, asset beta, levered beta, cost of equity, and WACC ? Explain
-
The tractor has a weight of 8000 lb with center of gravity at G. Determine if it can push the 550-lb log up the incline. The coefficient of static friction between the log and the ground is ? s =...
-
Solve for the value of beta in each of the following problems. a. H0: = 130 Ha: > 130 n = 75 = 12 = .01. The alternative mean is actually 135. b. H0: = .44 Ha: p < .44 n = 1095 = .05. The...
-
According to Zero Population Growth, the average urban U.S. resident consumes 3.3 pounds of food per day. Is this figure accurate for rural U.S. residents? Suppose 64 rural U.S. residents are...
-
$A B C$ plc is about to launch a new product. Facilities will allow the company to produce up to 20 units per week. The marketing department has estimated that at a price of $\$ 8,000$ no units will...
-
Write a general program to compute the coefficients of an exponential cubic spline fitting model given a parameter m. Then apply this program to a fitting of the following discount functions with...
-
Proton 1 , traveling in the negative \(x\) direction at speed \(v_{1}\), is directly below proton 2 , which is traveling at speed \(v_{2}\) at an angle of \(45^{\circ}\) above the positive \(x\)...
-
Graph the first-degree inequalities in two unknowns in Problems 13-48. \(x+3 y \leq-9\)
-
Ketton Ltd is in the process of preparing direct labour and factory overhead budgets for the year ending 30 June 2020. Relevant data are set out below. Required (a) Prepare the direct labour budget...
-
A particle of mass \(m\) and charge \(q\) moves in a circle of radius \(r\) in a uniform magnetic field of magnitude \(B\). Show that \((a)\) the particle's momentum is given by \(B q r\) and \((b)\)...
-
An opinion column on cnbc.com by the president of a banking association in Florida argued, Local banks are important because our country thrives on small businesses, which employ a majority of...
-
Describe the Operations (+,,*,/) that can cause negligible addition (NA), error magnification (EM), or subtractive cancellation (SC) in calculating ?((x^2)+1) - x . Give the range of where they might...
-
A Kaplan turbine is designed to develop 8,000 \(\mathrm{kW}\) shaft power. The head available is \(12 \mathrm{~m}\). Assuming speed ratio as 2.1, flow ratio as 0.6, overall efficiency as \(80 \%\),...
-
Suppose a market research firm enlisted 800 families in one Canadian city to participate in a study of expenditures for the December holiday season. Each family kept a log of spending for this...
-
We show the companies with the largest oil-refining capacity in the world according to Forbes. Use these population data and answer the questions. a. What are the values of the mean and the median?...
-
On Monday mornings, a CIBC branch has only one teller window open for deposits and withdrawals. Experience has shown that the average number of arriving customers in a 4-minute interval on Monday...
-
Orion Languages, Incorporated (OLI) offers conversational instruction in several languages. Customers can choose from three approaches: Group, Individual, or Intense. Group customers meet as a part...
-
Payroll is prepared for the month of January. Paychecks will be issued February 7. Annual salary information is as follows: Bryant, $36,000; Lennox, $40,000; Larkin, $26,000. Each employee...
-
Porter Pots ("PP") Pte Ltd manufactures a single product (an earthen self-cooking pot) and uses a standard costing system for control purposes. PP budgeted to produce and sell 14,000 units this year....
Study smarter with the SolutionInn App