Statistics for Business and Economics (13th Edition)
13th Edition
ISBN: 9780134506593
Author: James T. McClave, P. George Benson, Terry Sincich
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 5, Problem 5.65ACB
Downloading “apps” to your cell phone. Refer to Exercise 4.173 (p. 258) and the August 2011 survey by the Pew Internet & American Life Project. The study found that 40% of adult cell phone owners have downloaded an application (“app”) to their cell phone. Assume this percentage applies to the population of all adult cell phone owners.
- a. In a random sample of 50 adult cell phone owners, how likely is it to find that more than 60% have downloaded an “app” to their cell phone?
- b. Refer to part a. Suppose you observe a sample proportion of .62. What inference can you make about the true proportion of adult cell phone owners who have downloaded an “app”?
- c. Suppose the sample of 50 cell phone owners is obtained at a convention for the International Association for the Wireless Telecommunications Industry. How will your answer to part b change, if at all?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Sample opticalDens lot run westernBlot
1
1.053 A A
1.708 A A
2.99
0.977 A A
1.67
4
0.881 AB
1.47
0.788 A B
2.25
6
0.788 A B
0.15
7
0.896 AC
1.41
1.038 AC
2.51
9
0.963 AC
1.85
10
0.971 A D
1.7
11
1.234 AD
1.49
12
1.089 A D
1.92
13
0.984 A E
0.96
14
0.986 A E
1.64
15
1.067 A E
16
0.996 BA
1.77
17
1.129 BA
1.69
18
1.016 BA
3.01
19
1.019 B B
1.03
20
1.088 B B
1.94
21
1.28 BB
2.1
22
1.12 BC
0.83
23
1.054 BC
2.52
24
1.235 BC
1.78
1.327 BD
2.2
26
1.361 BD
2.08
27
1.233 BD
1.84
1.079 BE
0.9
29
1.12 B
1.29
30
0.959 BE
1.79
31
1.229 CA
1.46
32
1.027 CA
1.97
33
1.109 CA
2.29
34
1.118 CB
35
1.066 CB
2.06
36
1.146 CB
1.51
37
1.053 CC
1.47
38
1.082 CC
2.19
39
1.113 CC
2
40
1.14 CD
1.7
41
1.172 CD
2.87
0.966 CD
0.3
43
0.963 CE
2.18
44
1.064 CE
1.65
45
1.086 CE
2.59
46
0.985 DA
1.96
47
0.894 DA
2.43
48
1.109 DA
1.56
49
0.847 D B
1.51
50
0.799 DB
1.3
51
0.918 DB
0.7
52
1.033 DC
2.31
0.943 DC
1.85
54
1.089 DC
0.71
55
0.988 DD
1.12
1.169 D D
1.47
57
1.106 D D
2.9
58
1.308 DE
2.08
1.498 DE
1.94
60
1.271…
Not use ai bhffidjsis88sdjcbdudufuivfu
Could you please help me with it. Thank you!
Chapter 5 Solutions
Statistics for Business and Economics (13th Edition)
Ch. 5.1 - The probability distribution shown here describes...Ch. 5.1 - Consider the population described by the...Ch. 5.1 - Refer to Exercise 5.3 and find E (x) = Then use...Ch. 5.1 - Refer to Exercise 5.3. Assume that a random sample...Ch. 5.1 - In Example 5.3 we used a computer to generate 1...Ch. 5.2 - Consider the following probability distribution: x...Ch. 5.2 - Consider the following probability distribution: x...Ch. 5.2 - Consider the following probability distribution: x...Ch. 5.2 - Refer to Exercise 5.31. a. Show that x is an...Ch. 5.2 - Refer to Exercise 5.3. a. Find the sampling...
Ch. 5.2 - Refer to Exercise 5.5, in which we found the...Ch. 5.3 - Will the sampling distribution of x always be...Ch. 5.3 - Suppose a random sample of n = 25 measurements is...Ch. 5.3 - Suppose a random sample of n measurements is...Ch. 5.3 - A random sample of n = 64 observations is drawn...Ch. 5.3 - Refer to Exercise 5.18. Find the probability that...Ch. 5.3 - A random sample of n = 900 observations is...Ch. 5.3 - A random sample of n = 100 observations is...Ch. 5.3 - Open the applet Sampling Distributions. On the...Ch. 5.3 - Open the applet Sampling Distributions. On the...Ch. 5.3 - Voltage sags and swells. Refer to the Electrical...Ch. 5.3 - Salary of a travel management professional....Ch. 5.3 - Corporate sustainability of CPA firms. Refer to...Ch. 5.3 - Critical-part failures in NASCAR vehicles. Refer...Ch. 5.3 - Tomato as a taste modifier. Miraculin is a protein...Ch. 5.3 - Prob. 5.28ACICh. 5.3 - Levelness of concrete slabs. Geotechnical...Ch. 5.3 - Video game players and divided attention tasks....Ch. 5.3 - Exposure to a chemical in Teflon-coated cookware....Ch. 5.3 - Rental car fleet evaluation. National Car Rental...Ch. 5.3 - Prob. 5.34ACACh. 5.3 - Handwashing vs. handrubbing. The British Medical...Ch. 5.4 - Suppose a random sample of n measurements is...Ch. 5.4 - Suppose a random sample of n = 500 measurements is...Ch. 5.4 - A random sample of n = 80 measurements is drawn...Ch. 5.4 - A random sample of n = 250 measurements is drawn...Ch. 5.4 - A random sample of n = 1, 500 measurements is...Ch. 5.4 - Consider a population with values of x equal to 0...Ch. 5.4 - Dentists use of laughing gas. According to the...Ch. 5.4 - Cable TV subscriptions and cord cutters ....Ch. 5.4 - Do social robots walk or roll? Refer to the...Ch. 5.4 - Working on summer vacation. According to a Harris...Ch. 5.4 - Hospital work-related injuries. According to an...Ch. 5.4 - Hotel guest satisfaction. Refer to the results of...Ch. 5.4 - Stock market participation and IQ. Refer to The...Ch. 5.4 - Fingerprint expertise. Refer to the Psychological...Ch. 5.4 - Who prepares your tax return? As part of a study...Ch. 5.4 - Apps not working on smartphone. In a survey titled...Ch. 5 - The standard deviation (or, as it is usually...Ch. 5 - Consider a sample statistic A. As with all sample...Ch. 5 - A random sample of 40 observations is to be drawn...Ch. 5 - A random sample of n = 68 observations is selected...Ch. 5 - A random sample of n = 500 observations is...Ch. 5 - A random sample of n = 300 observations is...Ch. 5 - Use a statistical software package to generate 100...Ch. 5 - Use a statistical software package to generate 100...Ch. 5 - Suppose x equals the number of heads observed when...Ch. 5 - A random sample of size n is to be drawn from a...Ch. 5 - Requests to a Web server. In Exercise 4.175 (p....Ch. 5 - Improving SAT scores. Refer to the Chance (Winter...Ch. 5 - Study of why EMS workers leave the job. A study of...Ch. 5 - Downloading apps to your cell phone. Refer to...Ch. 5 - Surface roughness of pipe. Refer to the...Ch. 5 - Analysis of supplier lead time. Lead time is the...Ch. 5 - Producing machine bearings. To determine whether a...Ch. 5 - Quality control. Refer to Exercise 5.68. The mean...Ch. 5 - Length of job tenure. Researchers at the Terry...Ch. 5 - Switching banks after a merger. Banks that merge...Ch. 5 - Piercing rating of fencing safety jackets. A...Ch. 5 - Errors in filling prescriptions A large number of...Ch. 5 - Purchasing decision. A building contractor has...Ch. 5 - Motivation of drug dealers. Refer to the Applied...Ch. 5 - Soft-drink bottles. A soft-drink bottler purchases...
Additional Math Textbook Solutions
Find more solutions based on key concepts
1. How much money is Joe earning when he’s 30?
Pathways To Math Literacy (looseleaf)
For Problems 23-28, write in simpler form, as in Example 4. logbFG
Finite Mathematics for Business, Economics, Life Sciences and Social Sciences
1. How is a sample related to a population?
Elementary Statistics: Picturing the World (7th Edition)
Empirical versus Theoretical A Monopoly player claims that the probability of getting a 4 when rolling a six-si...
Introductory Statistics
(a) Make a stem-and-leaf plot for these 24 observations on the number of customers who used a down-town CitiBan...
APPLIED STAT.IN BUS.+ECONOMICS
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Similar questions
- Please help me with this. Thank you!arrow_forwardConstruct a frequency distribution for the given data set using 6 classes. In the table, include the midpoints, relative frequencies, and cumulative frequencies. Which class has the greatest frequency and which has the least frequency? Question Viewer Amount (in dollars) spent on books for a semester 422 106 355 400 381 411 106 50 62 511 394 54 381 505 437 359 267 311 268 115 407 413 192 252 80 454 107 330 486 Complete the table, starting with the lowest class limit. Use the minimum data entry as the lower limit of the first class. (Type integers or decimals. Round the class limits to the nearest whole number. Round all other values to the nearest thousandth as needed.) Class 50-126 Frequency 9 Midpoint 88 Relative Frequency Cumulative Frequency 0.333 9arrow_forwardTo assure 99% confidence another poll is conducted, again asking whether or nothuman cloning should be allowed. 5,000 randomly selected adults from across thenation are surveyed. Of those surveyed 4,388 respond that they are against humancloning. Construct a 99% confidence interval estimate for the proportion of adults whoare against human cloning. Does this interval support the newspaper’s claim?arrow_forward
- Could you help me please. Thank you!arrow_forwardCan you help me with it please.arrow_forwardIn a recent national poll consisting of 1012 randomly selected adults. Participants wereasked whether or not human cloning should be allowed. Of those surveyed 900indicated human cloning should not be allowed. A newspaper releases and articleclaiming 90% of those across the nation are against human cloning based on thenational poll. Construct a 95% confidence interval estimate for the proportion of adultswho are against human cloning. Does this interval support the newspaper’s claim? What sample size would be needed to assure 99% confidence with an error bound of 0.02?arrow_forward
- In a recent national poll consisting of 1012 randomly selected adults. Participants wereasked whether or not human cloning should be allowed. Of those surveyed 900indicated human cloning should not be allowed. A newspaper releases and articleclaiming 90% of those across the nation are against human cloning based on thenational poll. Construct a 95% confidence interval estimate for the proportion of adultswho are against human cloning. Does this interval support the newspaper’s claim?arrow_forwardIt is known that 30% of all households still have landlines. If we randomly select 10 households, let X = number that have landlines a) FInd the probability that X = 3. b) Find the mean and standard deviation of X.arrow_forwardplease answer and show workarrow_forward
- Please answer and show workarrow_forwardplease answer and show workarrow_forwardSuppose you want to have $300,000 for retirement in 25 years. Your account earns 8% interest. a) How much would you need to deposit in the account each month? SA $ b) How much interest will you earn? $1 Message instructor Enter an integer or decimal number [more..] Question Help: Video Submit Question esc ! 1 F1 F2 80 F3 # $ 2 3 4 Ơ ☑ F4 F5 % <6 olo 50 F6 A F7 Q W E R T Y ab A lock Z S X D C 7 LL F G Harrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill
Holt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGAL
Big Ideas Math A Bridge To Success Algebra 1: Stu...AlgebraISBN:9781680331141Author:HOUGHTON MIFFLIN HARCOURTPublisher:Houghton Mifflin Harcourt
Glencoe Algebra 1, Student Edition, 9780079039897...
Algebra
ISBN:9780079039897
Author:Carter
Publisher:McGraw Hill
Holt Mcdougal Larson Pre-algebra: Student Edition...
Algebra
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Big Ideas Math A Bridge To Success Algebra 1: Stu...
Algebra
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:Houghton Mifflin Harcourt
what is Research Design, Research Design Types, and Research Design Methods; Author: Educational Hub;https://www.youtube.com/watch?v=LpmGSioXxdo;License: Standard YouTube License, CC-BY