For the following scenarios provide the following:the null and alternative hypothesesexplain whether the hypothesis test is left-tailed, right-tailed, or two-tailed,explain how you should interpret a decision that rejects the null hypothesis, andexplain how you should interpret a decision that fails to reject the null hypothesis.A Don Anderson Poll reports that on average 70% of Jamaicans believe that electricitybills are too high.b. Sunshine Cooperation guarantees that the mean shelf life of cornflakes is at least 750days.Consumer Affairs has advised that the standard deviation of the fuel economies of itsа.с.Honda Civics for 2016 is no more than 10.7 miles per gallon.

Null and alternative hypotheses: The hypothesis, which is pre assumed as true, tentatively settled…

Answered: For the following scenarios provide the…

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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Problems pertain to the critical-value approach to hypothesis testing. Suppose that you want to conduct a left-tailed hypothesis test at the 5% signicfiance level. How must the critical value be chosen?
In November 2009 the average unemployment rate was 9.9% and in November 2019 a sample of 50 states showed it was 3.5%. At a .01 significance level can we conclude the employment rate has decreased? Show the six steps of hypothesis testing.
dalawa yung question & sasagutan
A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.05 significance level for both parts. a. Test the claim that the two samples are from populations with the same mean. What are the null and alternative hypotheses? O A. Ho: M#H2 H₁: H₁ H₂ OC. Ho: H1
Using the accompanying data of restaurant sales, determine if the vanance of weekday sales is the same as that of weekend sales for each of the three variables (lunch, dinner, and delivery). Click the icon to view the restaurant sales data. Is there sufficient evidence at the 0.01 level of significance to condude that the vanance of weekday sales is the same as that of weekend sales for lunch sales? Determine the null hypothesis, H. and the alternative hypothesis. H₁. Let weekend sales be population 1 and weekday sales be population 2. H₂ Hi 11 (Type integers or decimals. Do not round.) Compute the test statistic (Round to two decimal places as needed.) Survey data Date Day Lunch Sales $ Dinner Sales $ Delivery Sales $ 4-Apr Wednesday 358 789 293 11-Apr Wednesday 386 665 299 18-Apr Wednesday 426 628 289 25-Apr Wednesday 331 729 253 3-Apr Tuesday 296 848 325 10-Apr Tuesday 308 572 328 17-Apr Tuesday 297 568 358 24-Apr Tuesday 229 529 402 5-Apr Thursday 402 808 273 12-Apr Thursday 420…
"In your response indicate whether CPAs in states that have flat state income tax rates work fewer hours per week during tax season compared to the US average. You will want to formally set up H0 and Ha, report either the test statistic (z-value) or p-value, and explain why you either reject or fail to reject your null hypothesis."
part d dropdown: at least .55 or less than .55 did not provide or provided should or should not
For the following cases, you may use either the P-value approach or the rejection region approach to present a full hypothesis test, including: Identifying the claim and H0 and Ha, Finding the appropriate standardized test statistic, Finding the P-value or the rejection region, Deciding whether to reject or fail to reject the null hypothesis, and Interpreting the decision in the context of the original claim. A fitness magazine advertises that the mean monthly cost of joining a health club is less than $25. You work for a consumer advocacy group and are asked to test this claim. You find that a random sample of 18 clubs has a mean monthly cost of $26.25 and a standard deviation of $3.23. Perform the appropriate hypothesis test at α = 0.10.
Internet tax: The Gallup Poll asked 1043 U.S. adults whether they believed that people should pay sales tax on items purchased over the internet. Of these, 407 said they supported such a tax. Does the survey provide convincing evidence that the percentage of U.S. adults who favor an internet sales tax differs from 40%? Use the a = 0.05 level of significance. Part 1 of 5 State the appropriate null and alternate hypotheses. Ho: p = 0.40 H:p = 0.40 This hypothesis test is a two-tailed test. Part: 1/5 Part 2 of 5 Find the critical values. Round the answers to at least three decimal places. For a = 0.05, the critical values are and
A community college wants to analyze the age and GPA of its students. Here is the data: Age 18 40 25 38 44 19 51 28 31 21 24 GPA 2.9 3.3 2.0 3.9 3.7 2.7 3.9 3.5 1.9 2.9 3.4 Can we say that there is a significant relationship between these variables? (Use α = .05) Type of Test: Null Hypothesis: Alternate Hypothesis: SE: Test Statistic: P-value: Decision: Sentence:
b. Identify the test statistic for this hypothesis test. c. Identify the P-value for this hypothesis test.
This is a _______ tailed test. The correct statistical test to use for this problem is: Hypothesis testing: The last part of the null and alternative hypotheses are: What is/are the critical values for this problem? What is the obtained statistic for this problem? The effect size for this problem is _______.

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