Intro Stats
4th Edition
ISBN: 9780321826275
Author: Richard D. De Veaux
Publisher: PEARSON
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Question
Chapter 19, Problem 9E
a.
To determine
Identify the critical values.
b.
To determine
Identify the critical values.
c.
To determine
Identify the critical values.
d.
To determine
Identify the critical values.
e.
To determine
Identify the critical values.
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Let to be a specific value of t. Use the table of critical values of t below to find to-values such that following statements are true.
a. P(tzto) = .025, where df = 11
b. P (tzto)
= .01, where df = 18
c. P (tsto)
= .005, where df = 6
d. P (tsto) = .05, where df = 13
Click the icon to view the table of critical values of t.
a. The value of to is 2.201 .
b. The value of to is 2.552.
c. The value of to is.
...
Let to be a specific value of t. Use the table of critical values of t below to find to-values such that following statements are true.
a. P(t2to) = .025, where df = 11
b. P(t2to) = .01, where df = 18
P(tst)
d. P (tsto) = .05, where df = 13
%3D
%3D
с. Р
= .005, where df = 6
Data table
Click the icon to view the table of critical values of t.
Degrees of
freedom
t.050
t.025
t010
t.005
a. The value of to is
1
6.314
12.706
31.821
63.657
2
2.920
4.303
6.965
9.925
b. The value of to is
3
2.353
3.182
4.541
5.841
4
2.132
2.776
3.747
4.604
c. The value of to is
2.015
2.571
3.365
4.032
1.943
2.447
3.143
3.707
d. The value of to is
7
1.895
2.365
2.998
3.499
8.
1.860
2.306
2.896
3.355
1.833
2.262
2.821
3.250
10
1.812
2.228
2.764
3.169
11
1.796
2.201
2.718
3.106
12
1.782
2.179
2.681
3.055
13
1.771
2.160
2.650
3.012
14
1.761
2.145
2.624
2.977
15
1.753
2.131
2.602
2.947
16
1.746
2.120
2.583
2.921
17
1.740
2.110
2.567
2.898
18
1.734
2.101
2.552
2.878
19
1.729
2.093
2.539
2.861
20
1.725
2.086
2.528…
Use your calculator to find critical values such that the following statements are true. Your task is to determine the critical values below.
a. P(-tu/2 ststa/2) = 0.95, where df = 10
b. P(ts-ta) = 0.01, where df = 19
c. P(ts - tu/2 or tzte/2) = 0.10, where df = 19
d. P(ts -tu/2 or tzta/2) = 0.01, where df = 6
а. Р
Click the icon to view the table of critical values of t.
(Use 3 decimal places in all questions please.)
(Use 3 decimal places in questions a-d please.)
a. The upper tail critical value ta/2 =
b. The lower tail critical value ta =
c. The upper tail critical value tu/2
The lower tail critical value tu/2 =
d. The upper tail critical value t/2 = U
The lower tail critical value t/2= U
Chapter 19 Solutions
Intro Stats
Ch. 19.4 - 1. An experiment to test the fairness of a...Ch. 19.4 - Prob. 2JCCh. 19.4 - Prob. 3JCCh. 19.5 - Remember the bank thats sending out DVDs to try to...Ch. 19.5 - Prob. 5JCCh. 19.5 - For the bank, which situation has higher power: a...Ch. 19 - Parameters and hypotheses For each of the...Ch. 19 - Prob. 2ECh. 19 - P-values Which of the following are true? If...Ch. 19 - Prob. 4E
Ch. 19 - Prob. 5ECh. 19 - Prob. 6ECh. 19 - Prob. 7ECh. 19 - Prob. 8ECh. 19 - Prob. 9ECh. 19 - More critical values For each of the following...Ch. 19 - SECTION 16.4 11. Errors For each of the following...Ch. 19 - More errors For each of the following situations,...Ch. 19 - Prob. 13ECh. 19 - 14. Which alternative? In each of the following...Ch. 19 - CHAPTER EXERCISES 13. P-value A medical researcher...Ch. 19 - Prob. 16ECh. 19 - Alpha A researcher developing scanners to search...Ch. 19 - Prob. 18ECh. 19 - Prob. 19ECh. 19 - Significant again? A new reading program may...Ch. 19 - Prob. 21ECh. 19 - Is the Euro fair? Soon after the Euro was...Ch. 19 - 23. Approval 2011 In November 2011, Barack Obama’s...Ch. 19 - Prob. 24ECh. 19 - Prob. 25ECh. 19 - Prob. 26ECh. 19 - Prob. 27ECh. 19 - Prob. 28ECh. 19 - Prob. 29ECh. 19 - Prob. 30ECh. 19 - 31. Homeowners 2009 In 2009, the U.S. Census...Ch. 19 - Alzheimers Testing for Alzheimers disease can be a...Ch. 19 - Prob. 33ECh. 19 - Quality control Production managers on an assembly...Ch. 19 - Prob. 35ECh. 19 - 36. Production Consider again the task of the...Ch. 19 - Equal opportunity? A company is sued for job...Ch. 19 - Stop signs Highway safety engineers test new road...Ch. 19 - Prob. 39ECh. 19 - Ads A company is willing to renew its advertising...Ch. 19 - 41. Software, part II 203 students signed up for...Ch. 19 - Prob. 42ECh. 19 - Prob. 43ECh. 19 - Catheters During an angiogram, heart problems can...Ch. 19 - Prob. 45ECh. 19 - Prob. 46ECh. 19 - Prob. 47ECh. 19 - Faulty or not? You are in charge of shipping...Ch. 19 - Prob. 49ECh. 19 - Prob. 50E
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- Let to be a specific value of t. Use the table of critical values of t below to find to-values such that the following statements are true. a. P(-1)=0.95, where df=11 b. P(1st) -0.01, where df = 14 CP(Is-to or tab) -0.10, where df=6 d. P (ts-ortat) *0.01, where of 10 Click the icon to view the table of critical values of t a. The value of to is b. The value of tois c. The value of tos d. The value of to is (Type an integer or a decimal.) (Type an integer or a decimal.) (Type an integer or a decimal.) (Type an integer or a decimal.)arrow_forwardUse your calculator to find critical values such that the following statements are true. Your task is to determine the critical values below. a. P(-ta/2 ststa/2) = 0.95, where df = 15 b. P (ts-t) = 0.01, where df = 17 c. P(ts-a/2 or tata/2) = 0.10, where df = 20 d. P (ts-ta/2 or 12ta/2) = 0.01, where df = 15 Click the icon to view the table of critical values of t. (Use 3 decimal places in all questions please.) (Use 3 decimal places in questions a-d please.) a. The upper tail critical value a/2 = b. The lower tail critical value t = c. The upper tail critical value a/2 = The lower tail critical value a/2= d. The upper tail critical value a/2 = The lower tail critical value a/2"arrow_forwardIII. Illustrate the rejection region given the critical value and identify if the t-values lie in the non-rejection region or rejection region. 1. critical t-value of -2.086 computed t-value of -2.096 2. critical t-value of ±1.071 computed t-value of 1.01arrow_forward
- and Determine the upper-tail critical value to/2 in each of the following circumstances. a. 1-α=0.95, n = 13 d. 1-q=0.95, n = 38 b. 1-a=0.99, n = 13 e. 1-α=0.90, n = 62 c. 1-α=0.95, n = 46 Click here to view page 1 of the table of critical values for the t distribution. Click here to view page 2 of the table of critical values for the t distribution. C... a. t= (Round to four decimal places as needed.) b. t= (Round to four decimal places as needed.) c. t= (Round to four decimal places as needed.) d. t= (Round to four decimal places as needed.) e.t= (Round to four decimal places as needed.) Get more help. View instructor tip Help me solve this Type here to search. 79°F Next llaarrow_forwardMatch each Test Situation with the correct Critical Value. For a two-sided test, find only the positive value. Test Situation Ha: P1 P2 + 0 and a = 0.001 Ha:Pi – P2 7 0 and a = 0.02 Ha:P1 – p2 0 and a = 0.005 Ha: P1 – P2 > 0 and a = 0.04 Critical Value a. 1.751 b. 2.326 с. 2.576 d. -1.960 е. 3.291arrow_forwardMatch each Test Situation with the correct Critical Value. For a two-sided test, find only the positive value. Test Situation Two samples, 1 = 25.3, I2 H.: P1 - 2 po, and a 0.01 %3D Two samples, n = 28, Ha: µd > 0, and a 0.01 dv One sample, ni = - 35, п2 41, Ha: p1 – p2 0, and a = 0.01 %3D %3D One sample of x's and y's, n = 114, Ha: p < 0, and a = 0.001 One sample, o is known, n = 68, Ha:µ # Ho, and a = 0.05 One sample, o is unknown, n = 76, H. : µ < Ho, and a 0.05 Critical Value a. 1.960 b. -3.165 C. 2.473 d. 2.326 e. 2.576 f. -1.294 g. -1.665 h. 2.426arrow_forward
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