Essentials of Statistics (6th Edition)
6th Edition
ISBN: 9780134685779
Author: Mario F. Triola
Publisher: PEARSON
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Chapter 11.2, Problem 2BSC
Ear Preference for Cell Phone Use
2. Hypotheses Refer to the data given in Exercise 1 and assume that the requirements are all satisfied and we want to conduct a hypothesis test of independence using the methods of this section. Identify the null and alternative hypotheses.
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The displays provided from the technology available below result from using data for a smartphone carrier's data speeds at airports to test the claim that they are from a population having a mean less than
6.00
Mbps. Conduct the hypothesis test using these results. Use a
0.05
significance level. Identify the null and alternative hypotheses, test statistics, and P-value, and state the final conclusion that addresses the original claim.
T-Test
μ<6.00
t=−3.552993
p=0.000427
x=5.35
Sx=1.293612
n=50
Question content area bottom
Part 1
Assuming all conditions for conducting a hypothesis test are met, what are the null and alternative hypothese
Independent-samples t-test: (a) develop a research question that can be addressed with independent-samples t-test, (b) state the null and alternative hypotheses (in words), (c) state the alpha level,
My Question>> (d) run the analysis, and (e) provide an interpretation of results (including checks for assumptions and effect size) following APA format
A mail-order company has 2 warehouses. Independent surveys show that 364 out of 400 orders placed with Warehouse One and 279 out of 300 orders placed with Warehouse Two were mailed on time. Perform a hypothesis test to determine whether the samples provide strong evidence that the on-time percentage of orders placed at Warehouse One is lower than that at Warehouse Two.(a)Clearly state the test hypotheses. Begin with “Let ….. represent ….., respectively.”(b)Use an appropriate formula to calculate the test statistic.(c)Use an appropriate table to find the p-value. Do not draw any conclusion
Chapter 11 Solutions
Essentials of Statistics (6th Edition)
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- My question: Dependent-samples t-test: (a) develop a research question that can be addressed with dependent-samples t-test, (b) state the null and alternative hypotheses (in words), (c) state the alpha level, (d) run the analysis, and (e) provide interpretation of results (including checks for assumptions and effect size) following APA formatarrow_forwardThe first problem we confront in analyzing data is determining the appropriate statistical test. Under what circumstances is a t statistic used instead of a z-score in a hypothesis test? Give an example of both a t statistic and z-score.arrow_forwardIdentify the null and alternative hypotheses for this test. Choose the correct answer below. Identify the test statistic for this hypothesis test. Identify the P-value for this hypothesis test. Does the accuracy rate appear to be acceptable? Identify the conclusion for this hypothesis test.arrow_forward
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