Introductory Statistics (10th Edition)
10th Edition
ISBN: 9780321989178
Author: Neil A. Weiss
Publisher: PEARSON
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Chapter 10.6, Problem 185E
To determine
Whether there is any significant difference in the population means by using the hypothesis
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Suppose the following hypotheses are to be tested.
Ho : UA= UB and H₁ HANB
for two populations in which the population variances are known and have the values o² = 12 and
o = 15 respectively.
Two samples of sizes 29 and 9 respectively were collected. The data were not paired. According to the
flowcharts presented in M140, which hypothesis test should be used?
(You may assume that any additional requirements for your selected test, such as normality and/or equal
population variances are satisfied.)
Select one:
Matched-pairs t-test
Sign test
Two-sample t-test
X² test for contingency tables
One-sample z-test
One-sample t-test
Two-sample z-test
Chapter 09, Testbank, Question 103-106
7 Your answer is partially correct. Try again.
In a hypothesis test with hypotheses Ho : p 2 0.31 and H1 :p < 0.31, a random sample of size 519 produced
sample proportion of 0.2730. The test is to be made at the 10% significance level.
What is the critical value of z?
-1.645
-2.05
-1.28
-1.714
What is the value of the test statistic, z, rounded to three decimal places?
-1.822
What is the p-value for this hypothesis test, rounded to four decimal places?
Should you reject or fail to reject the null hypothesis in this test?
Reject.
Assume that your sample(s) comes from a normally distributed population.
Please show all work. State the null hypothesis and alternative hypothesis. State your decision in terms of the null hypothesis and the alpha level. State your results in standard APA format.
What, if any relationship, exists between self-reported height for females and self-reported weight for the same female participants?
Write a null and an alternative hypothesis for this research question (you may want to review Example 15.7 and Example 15.8 on page 508).
Determine the relationship between the two measures for this sample
(calculate r).
Discuss and interpret the relation strength and direction indicated by this statistic.
Test your hypothesis.
Report your decision. Then, report your results using standard APA format (see page 509 in your text).
Is there a relationship between self-reported major and self-reported IQ in the sample?
Write a null and an alternative hypothesis for this research (you…
Chapter 10 Solutions
Introductory Statistics (10th Edition)
Ch. 10.1 - Understanding the Concepts and Skills 10.1 Give an...Ch. 10.1 - Define the phrase independent samples.Ch. 10.1 - consider the quantities 1, 1, x1, s1 2, 2, x2and,...Ch. 10.1 - Discuss the basic strategy for performing a...Ch. 10.1 - In each of Exercises 10.510.10, we have stated the...Ch. 10.1 - In each of Exercises 10.510.10, we have stated the...Ch. 10.1 - In each of Exercises 10.510.10, we have stated the...Ch. 10.1 - Prob. 8ECh. 10.1 - In each of Exercises 10.5-10.10, we have stated...Ch. 10.1 - In each of Exercises 10.510.10, we have stated the...
Ch. 10.1 - Prob. 11ECh. 10.1 - Identify the assumption for using the two-means...Ch. 10.1 - In each of Exercises 10.1310.18, we have presented...Ch. 10.1 - In each of Exercises 10.1310.18, we have presented...Ch. 10.1 - In each of Exercises 10.1310.18, we have presented...Ch. 10.1 - Prob. 16ECh. 10.1 - In each of Exercises 10.1310.18, we have presented...Ch. 10.1 - Prob. 18ECh. 10.1 - A variable of two populations has a mean of 40 and...Ch. 10.1 - Prob. 20ECh. 10.1 - Prob. 21ECh. 10.1 - Prob. 22ECh. 10.1 - Prob. 23ECh. 10.1 - Prob. 24ECh. 10.1 - In Exercises 10.2510.30, hypothesis tests are...Ch. 10.1 - Prob. 26ECh. 10.1 - Prob. 27ECh. 10.1 - In Exercises 10.2510.30, hypothesis tests are...Ch. 10.1 - Prob. 29ECh. 10.1 - In Exercises 10.2510.30, hypothesis tests are...Ch. 10.2 - Regarding the four conditions required for using...Ch. 10.2 - Explain why sp is called the pooled sample...Ch. 10.2 - Prob. 35ECh. 10.2 - Prob. 36ECh. 10.2 - Prob. 37ECh. 10.2 - In each of Exercises 10.3510.38, we have provided...Ch. 10.2 - Prob. 39ECh. 10.2 - In each of Exercises 10.3910.44, we have provided...Ch. 10.2 - Prob. 41ECh. 10.2 - Prob. 42ECh. 10.2 - Prob. 43ECh. 10.2 - Prob. 44ECh. 10.2 - Applying the Concepts and Skills Preliminary data...Ch. 10.2 - Prob. 46ECh. 10.2 - Fortified Juice and PTH. V. Tangpricha et al. did...Ch. 10.2 - Prob. 48ECh. 10.2 - Nigerian Spleen Length. O. Ehimwenma and M. Tagbo,...Ch. 10.2 - Recess and Wasted Food. E. Bergman et al....Ch. 10.2 - In Exercises 10.5110.56, apply Procedure 10.2 on...Ch. 10.2 - In Exercises 10.5110.56, apply Procedure 10.2 on...Ch. 10.2 - Prob. 53ECh. 10.2 - Prob. 54ECh. 10.2 - In Exercises 10.5110.56, apply Procedure 10.2 on...Ch. 10.2 - Prob. 56ECh. 10.2 - Prob. 57ECh. 10.2 - Children of Diabetic Mothers. The paper...Ch. 10.2 - A Better Golf Tee? 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Drink and Be...Ch. 10 - Prob. 17RPCh. 10 - Insulin and BMD. I. Erturul et al. conducted a...Ch. 10 - Prob. 19RPCh. 10 - Prob. 20RPCh. 10 - UWEC UNDERGRADUATES Recall from Chapter 1 (see...Ch. 10 - DEXAMETHASONE THERAPY AND IQ On page 439, we...
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