Stats
5th Edition
ISBN: 9780135163825
Author: De Veaux, Richard D., Velleman, Paul F., BOCK, David E.
Publisher: Pearson,
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Chapter 10, Problem 35E
a.
To determine
Check whether the proposed question indicate any bias.
Suggest a better question to overcome the bias.
b.
To determine
Check whether the proposed question indicate any bias.
Suggest a better question to overcome the bias.
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1 No.
2
3
4
Binomial Prob.
X
n
P
Answer
5
6 4
7
8
9
10
12345678
8
3
4
2
2552
10
0.7
0.233
0.3
0.132
7
0.6
0.290
20
0.02
0.053
150
1000
0.15
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8
7
10
0.7
0.383
11
9
3
5
0.3
0.132
12
10
4
7
0.6
0.290
13
Poisson Probability
14
X
lambda
Answer
18 4
19
20
21
22
23 9
15
16
17 3
1234567829
3
2
0.180
2
1.5
0.251
12
10
0.095
5
3
0.101
7
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0.060
3
2
0.180
2
1.5
0.251
24 10
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step by step on Microssoft on how to put this in excel and the answers please
Find binomial probability if:
x = 8, n = 10, p = 0.7
x= 3, n=5, p = 0.3
x = 4, n=7, p = 0.6
Quality Control: A factory produces light bulbs with a 2% defect rate. If a random sample of 20 bulbs is tested, what is the probability that exactly 2 bulbs are defective? (hint: p=2% or 0.02; x =2, n=20; use the same logic for the following problems)
Marketing Campaign: A marketing company sends out 1,000 promotional emails. The probability of any email being opened is 0.15. What is the probability that exactly 150 emails will be opened? (hint: total emails or n=1000, x =150)
Customer Satisfaction: A survey shows that 70% of customers are satisfied with a new product. Out of 10 randomly selected customers, what is the probability that at least 8 are satisfied? (hint: One of the keyword in this question is “at least 8”, it is not “exactly 8”, the correct formula for this should be = 1- (binom.dist(7, 10, 0.7,…
Kate, Luke, Mary and Nancy are sharing a cake. The cake had previously been divided into four slices (s1, s2, s3 and s4). What is an example of fair division of the cake
S1
S2
S3
S4
Kate
$4.00
$6.00
$6.00
$4.00
Luke
$5.30
$5.00
$5.25
$5.45
Mary
$4.25
$4.50
$3.50
$3.75
Nancy
$6.00
$4.00
$4.00
$6.00
Chapter 10 Solutions
Stats
Ch. 10.2 - 1. Various claims are often made for surveys. Why...Ch. 10.4 - 2. We need to survey a random sample of the 300...Ch. 10 - Prob. 1ECh. 10 - 2. Satisfied workers The managers of a large...Ch. 10 - Prob. 3ECh. 10 - Prob. 4ECh. 10 - Prob. 5ECh. 10 - 6. Sampling satisfaction A company hoping to...Ch. 10 - Prob. 7ECh. 10 - 8. Satisfactory satisfaction samples For each...
Ch. 10 - Prob. 9ECh. 10 - 10. Happy employees The company plans to have the...Ch. 10 - Prob. 11ECh. 10 - 12. Surveying employees The company of Exercise 2...Ch. 10 - Prob. 13ECh. 10 - 14. Student center survey For their class project,...Ch. 10 - Prob. 15ECh. 10 - Prob. 16ECh. 10 - Prob. 17ECh. 10 - In Exercises 17 to 23, for the reports about...Ch. 10 - Prob. 19ECh. 10 - Prob. 20ECh. 10 - Prob. 21ECh. 10 - In Exercises 17 to 23, for the reports about...Ch. 10 - Prob. 23ECh. 10 - 24. Mistaken poll A local TV station conducted a...Ch. 10 - Prob. 25ECh. 10 - 26. Parent opinion, part 1 In a large city school...Ch. 10 - Prob. 27ECh. 10 - 28. Churches For your political science class,...Ch. 10 - 29. Playground Some people have been complaining...Ch. 10 - 30. Roller coasters An amusement park has opened a...Ch. 10 - 31. Playground, act two The survey described in...Ch. 10 - 32. Wording the survey Two members of the PTA...Ch. 10 - 33. Banning ephedra An online poll on a website...Ch. 10 - 34. Survey questions Examine each of the following...Ch. 10 - Prob. 35ECh. 10 - 36. Phone surveys Any time we conduct a survey, we...Ch. 10 - 37. Cell phone survey What about drawing a random...Ch. 10 - 39. Fuel economy Occasionally, when I fill my car...Ch. 10 - 40. Accounting Between quarterly audits, a company...Ch. 10 - 41. Happy workers? A manufacturing company employs...Ch. 10 - 42. Quality control Sammy’s Salsa, a small local...Ch. 10 - 43. A fish story Concerned about reports of...Ch. 10 - 44. Another fish story In recent years, beaches...Ch. 10 - 45. Sampling methods Consider each of these...Ch. 10 - 46. More sampling methods Consider each of these...
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