Elementary Statistics: Picturing the World (6th Edition)
6th Edition
ISBN: 9780321911216
Author: Ron Larson, Betsy Farber
Publisher: PEARSON
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Textbook Question
Chapter 7.5, Problem 11E
Graphical Analysis In Exercises 13 and 14, state whether each standardized test statistic χ2 allows you to reject the null hypothesis. Explain.
13. (a) χ2 = 2.091
(b) χ2 = 0
(c) χ2 = 1.086
(d) χ2 = 6.3471
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State whether each standardized test statistic
χ2
allows you to reject the null hypothesis. Explain.
055
χ2
χ2L=11.651
χ2R=27.204
A coordinate system has a horizontal axis labeled chi squared from 0 to 55 in increments of 5 and a vertical axis. A curve is over a horizontal axis. Vertical line segments extend from the horizontal axis to the curve at chi Subscript Upper L Superscript 2=11.651 and chi Subscript Upper R Superscript 2=27.204. The area under the curve between chi Subscript Upper L Superscript 2=11.651 and chi Subscript Upper R Superscript 2=27.204 is shaded.
(a)
χ2=27.211
(b)
χ2=27.197
(c)
χ2=11.644
(d)
χ2=11.658
(a) Choose the correct answer below.
A.
Do not reject
the null hypothesis because the standardized test statistic
is not
in the rejection region.
B.
Reject
the null hypothesis because the standardized test statistic
is
in the rejection region.
C.…
Chebyshev's Theorem states that for any set of numbers, the fraction that will lie within k standard deviations of the mean is at least 1−1/k2.
Use this theorem to find the fraction of all the numbers of a data set that must lie within 2 standard deviations from the mean.
At least ? of all numbers must lie within 2 standard deviations from the mean.
(type a fraction)
LICENSE x ED COURSE, PART 3 of 4. What is the chi-square critical value (a = 0.05)?The following 2 X 2 chart represents whether high school students passed the road test for their driver’s license on the first attempt by whether they took a driver’s education course. What is the chi-square critical value (a = 0.05) ?
Chapter 7 Solutions
Elementary Statistics: Picturing the World (6th Edition)
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