In hypothesis testing,if the test statistic is negative, this means the sample statistic is larger than the claimed population parameter.O we call the initial claim being tested about the population an alternative hypothesis.the "P" in P-value stands for "personal."O it is necessary to know the population size in order to compute the test statistic.O results that are statistically significant may or may not be practically important (or practically significant).

We have given the following statement about hypothesis testing.

Answered: In hypothesis testing, if the test…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A study conducted among college students looked at the influence of religiosity (high, medium, or low) on anger frequency (never, sometimes, or often) in the last month. The responses of randomly selected college students at a large school in the United States are shown in the following table. Anger Frequency Never Sometimes Often High 214 What is the correct conclusion for this hypothesis test? 145 29 Medium 129 61 18 Low 60 55 27 You want to determine if anger frequency and religiosity are independent. Use a level of significance of a = 0.10. O As the P-value is less than a, we reject the null hypothesis. Thus, there is sufficient evidence to conclude that anger frequency and religiosity are not independent. O As the P-value is less than a, we reject the null hypothesis. Thus, there is insufficient evidence to conclude that anger frequency and religiosity are not independent. O As the P-value is less than a, we fail to reject the null hypothesis. Thus, there is sufficient evidence to…
Answer D and E
The ___________ is a value used in making a decision about the null hypothesis and is found by converting the sample statistic to a score with the assumption that the null hypothesis is true.
Which statistical inference technique should be used to answer the following statistical question? A shoe company believes the average foot size of its customers is 9.25 feet. They took a random sample of 100 customers' foot sizes. A confidence interval for the population proportion. A hypothesis test for the population mean. A confidence interval for the population mean. A hypothesis test for the population proportion. A hypothesis test for the difference between two population means.
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You wish to test the following claim (Ha) at a significance level of a = 0.01. H.: u = 78.5 H.:u < 78.5 You believe the population is normally distributed, but you do not know the standard deviation. You obtain the following sample of data: data 64.5 63.5 72.4 68.2 58.3 65 What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... O less than (or equal to) a O greater than a
When we test the hypothesis that the population proportions are equal, we can use the Z test for a one-sided as well as a two-sided alternative. Select one: a. False b. True C. Not sure
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Check My Work (4 remaining) Tourism is extremely important to the economy of Florida. Hotel occupancy is an often-reported measure of visitor volume and visitor activity (Orlando Sentinel, May 19, 2018). Hotel occupancy data for February in two consecutive years are as follows. Current Year Previous Year Occupied Rooms 1,505 1,411 Total Rooms 1,750 1,700 a. Formulate the hypothesis test that can be used to determine whether there has been an increase in the proportion of rooms occupied over the one-year period. Let pi = population proportion of rooms occupied for current year p2 = population proportion of rooms occupied for previous year Ho : Pi – P2 equal to 0 H. : Pi – P2 equal to 0 b. What is the estimated proportion of hotel rooms occupied each year (to 2 decimals)? Current year Previous Year c. Conduct a hypothesis test. What is the p-value (to 4 decimals)? Use Table 1 from Appendix B. p-value = Using a 0.05 level of significance, what is your conclusion? We - Select your answer -…
Define the following terms in your own words with the help of suitable examples. Descriptive and Inferential Statistics Level of significance Point and Interval Estimation Estimation and Testing of Hypothesis One tail and Two Tail hypothesis tests Sample and Population
Explain the difference between statistical significance and practical significance. Choose the correct answer below. O A. Statistical significance means that the sample statistic is not likely to come from the population whose parameter is stated in the null hypothesis. Practical significance refers to whether the difference between the sample statistic and the parameter stated in the null hypothesis is large enough to be considered important in an application. O B. Statistical significance refers to how an unusual event is unlikely to actually appear in a real world application, such as every entry in a sample of size 50 having the same value. Practical significance refers to how an unusual event is likely to actually appear in a real world application, such as a rejection of a null hypothesis using data that looks feasible. O C. Statistical significance refers to the type of hypothesis test needed to analyze a population, with some tests being more important than Z tests. Practical…

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