Stats
5th Edition
ISBN: 9780135163825
Author: De Veaux, Richard D., Velleman, Paul F., BOCK, David E.
Publisher: Pearson,
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Chapter 3, Problem 5E
a.
To determine
Explain what the given plot shows using the concept of a conditional distribution.
b.
To determine
Explain whether you think that the differences here are real.
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A smallish urn contains 25 small plastic bunnies – 7 of which are pink and 18 of which are white. 10 bunnies are drawn from the urn at random with replacement, and X is the number of pink bunnies that are drawn.
(a) P(X = 5) ≈
(b) P(X<6) ≈
The Whoville small urn contains 100 marbles – 60 blue and 40 orange. The Grinch sneaks in one night and grabs a simple random sample (without replacement) of 15 marbles.
(a) The probability that the Grinch gets exactly 6 blue marbles is [ Select ] ["≈ 0.054", "≈ 0.043", "≈ 0.061"] .
(b) The probability that the Grinch gets at least 7 blue marbles is [ Select ] ["≈ 0.922", "≈ 0.905", "≈ 0.893"] .
(c) The probability that the Grinch gets between 8 and 12 blue marbles (inclusive) is [ Select ] ["≈ 0.801", "≈ 0.760", "≈ 0.786"] . The Whoville small urn contains 100 marbles – 60 blue and 40 orange. The Grinch sneaks in one night and grabs a simple random sample (without replacement) of 15 marbles.
(a)…
Suppose an experiment was conducted to compare the mileage(km) per litre
obtained by competing brands of petrol I,II,III. Three new Mazda, three new
Toyota and three new Nissan cars were available for experimentation. During the
experiment the cars would operate under same conditions in order to eliminate
the effect of external variables on the distance travelled per litre on the assigned
brand of petrol. The data is given as below:
Brands of Petrol Mazda Toyota Nissan
I 10.6 12.0 11.0
II 9.0 15.0 12.0
III 12.0 17.4 13.0
(a) Test at the 5% level of significance whether there are signi
cant differences among the brands of fuels and also among the cars. [10]
(b) Compute the standard error for comparing any two fuel brands means. Hence
compare, at the 5% level of significance, each of fuel brands II, and III with
the standard fuel brand I. [10]
Business discuss
Chapter 3 Solutions
Stats
Ch. 3.2 - A statistics class reports the following data on...Ch. 3.2 - A statistics class reports the following data on...Ch. 3.2 - Prob. 3JCCh. 3.2 - A statistics class reports the following data on...Ch. 3.2 - A statistics class reports the following data on...Ch. 3.2 - A statistics class reports the following data on...Ch. 3.2 - Prob. 7JCCh. 3 - Prob. 1ECh. 3 - 2. Cyber comparison shopping It has become common...Ch. 3 - 3. College value again Consider the survey data in...
Ch. 3 - 4. Cyber comparison shopping again
Find the...Ch. 3 - Prob. 5ECh. 3 - Prob. 6ECh. 3 - Prob. 7ECh. 3 - 8. College value? revisited Here is a mosaic plot...Ch. 3 - Prob. 9ECh. 3 - Prob. 10ECh. 3 - Prob. 11ECh. 3 - Prob. 12ECh. 3 - Prob. 15ECh. 3 - Prob. 16ECh. 3 - 17. Death from the sky A recent article in...Ch. 3 - Prob. 18ECh. 3 - Prob. 19ECh. 3 - Prob. 20ECh. 3 - Prob. 21ECh. 3 - Prob. 22ECh. 3 - Prob. 23ECh. 3 - Prob. 24ECh. 3 - Prob. 25ECh. 3 - Prob. 26ECh. 3 - Prob. 27ECh. 3 - 28. A sense of identity The Pew Research survey...Ch. 3 - 29. Seniors Prior to graduation, a high school...Ch. 3 - 30. Politics Students in an Intro Stats course...Ch. 3 - Prob. 31ECh. 3 - 32. Minimum wage workers The U.S. Department of...Ch. 3 - 33. More about seniors Look again at the table of...Ch. 3 - Prob. 34ECh. 3 - Prob. 35ECh. 3 - Prob. 36ECh. 3 - Prob. 37ECh. 3 - Prob. 38ECh. 3 - Prob. 39ECh. 3 - 40. Twin births In 2000, the Journal of the...Ch. 3 - 41. Blood pressure A company held a blood pressure...Ch. 3 - 42. Obesity and exercise The Centers for Disease...Ch. 3 - Prob. 43ECh. 3 - Prob. 44ECh. 3 - 45. Drivers’ licenses 2014 The table below shows...Ch. 3 - Tattoos A study by the University of Texas...Ch. 3 - 47. Diet and politics shuffled In Exercise 5 you...Ch. 3 - 48. College values shuffled In Exercise 8 you were...Ch. 3 - 49. Hospitals Most patients who undergo surgery...Ch. 3 - 50. Delivery service A company must decide which...Ch. 3 - 51. Graduate admissions A 1975 article in the...Ch. 3 - 52. Be a Simpson Can you design a Simpson’s...
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