a. Identify the null and alternative hypotheses.b. identify the test statisticc. identify the p-value A data set includes weights (in grams) of 35 Reese's Peanut Butter Cup Miniatures. The accompanying Statdisk display shows results from using all 35 weights to test the claim that the sample isfrom a population with a mean equal to 8.953 g. Test the given claim by using the display provided from Statdisk. Use a 0.10 significance level.Click the icon to view the Statdisk display.Identify the null and alternative hypotheses.Ho:H₁:(Type integers or decimals. Do not round.)Statdisk Displayt TestTest Statistic, t:Critical t:P-value:- 3.85163± 1.690920.00049PrintDoneX

Sample size n =35 Population mean =8.953

Answered: a. Identify the null and alternative…

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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1. Explain the concept of a hypothesis test, and why it is used in research and science. 2. Conduct a hypothesis test, by executing the following steps: a. Identifying the correct type of test. b. Creating the two hypotheses. c. Organizing the information from the problem. d. Calculating any missing statistics. e. Finding the P-value on your calculator. f. Making the decision of the test. g. Writing a sentence which embodies your decision. 3. Differentiate between a 1-sided and 2-sided test. 4. Differentiate between a 1-proportion z-test and 2-proportion z-test.
Q4. Which of these statements are correct for a hypothesis test: I. The Significance Level is the Pr(Rejecting a correct Null). II. Falsely Not Rejecting the Null is a Type II error. Pr(Тype II error) %3D1- Pr(Туpe I error). III. A. I. & II. B. II. & III. C. I., II. & III. D. All incorrect. O A. A В. В С. С O D. D
1a. write the hypotheses in symbolic form determine if the test is right tailed left tailed or two tailed and explain why. 1b. Calculate the pooled sample proportion and the test statistic. Explain your calculations and include your results. Pooled Sample Proportion q-bar Test Statistic 1c. calculate the critical value in make a decision about the null hypothesis. explain your calculations include your results and explain how you arrived at your decision. Critical Value 1d. calculate the P-value and make a decision about the null hypothesis. explain your calculations include your results and explain how you arrived at your decision. P-value 1e. Restate your conclusion in non-technical terms.
B. Identify the test statistic. z=___ C. Identify the P-value. P-value=___ D. What is the conclusion based on the hypothesis test? The P-value is (greater than/ less than) the significance level of α=0.05, so (reject/ fail to reject) the null hypothesis. There (suffiecient/ is not sufficient) evidence to warrant rejection of the claim that women and men have equal success in challenging calls. Test the claim by constructing an appropriate confidence interval. The 95% confidence interval is___<(p1-p2)<____. E. What is the conclusion based on the confidence interval? Because the confidence interval limits (include/ do not include) 0, there (does/ does not) appear to be a significant difference between the two proportions. There (is sufficient/ is not sufficient) evidence to warrant rejection of the claim that men and women have equal success in challenging calls. F. Based on the results, does it appear that men and women may have equal success in challenging…
A researcher wants to investigate the effect of anti-anxiety medication on depression. To do so, she gives one group a placebo treatment and one group the medication. Which hypothesis test is appropriate for her study? A. One-way ANOVA B. Two-way ANOVA C. Independent-samples t-test D. Related-samplest-test
2005 9.135 Kicking the cigarette habit. Can taking an antidepressant drug help cigarette smokers kick their habit? The New England Journal of Medicine (Oct. 23, 1997) published a study in which 615 smokers (all of whom wanted to give up smoking) were randomly assigned to receive either Zyban (an antidepressant) or a placebo (a dummy pill) for six weeks. Of the 309 patients who received Zyban, 71 were not smoking one year later. Of the 306 patients who received a placebo, 37 were not smoking one year later. Conduct a test of hypothesis (at a = posed in the first sentence of this exercise. 9.138 .05) to answer the research question
2. A marketing manager for a phone company claims that 55% of children ages 8-12 have their own cell phones. In a random survey of 802 children ages 8-12, 460 of them had phones. Conduct a hypothesis test for the manager's claim. Use a x= 0.05 significance level. a. Write the null and alternative hypothesis b. Find the test statistic (2 decimal places) c. Find the p-value (4 decimal places) d. Decision: reject or fail to reject? Why? e. Conclusion in context of the problem Calculator Command
A. What is the test statistic B. What is the p-value
The data below show sport preference and age of participant from a random sample of members of a sports club. Is there evidence to suggest that they are related? Frequencies of Sport Preference and Age Tennis Swimming Basketball 18-25 97 86 72 26-30 91 78 54 31-40 68 72 50 Over 40 67 58 43 What can be concluded at the a = 0.10 significance level?
A. Identify the test statistic test B. Identify the P-value for this hypothesis test C. If P-value is reject H0 or fail to reject H0 D. Do the results support the belief that 50.8% of newborn babies are boys?
a hospital claims that the proportion, p, of full-term babies born in their hospital that weigh more than 7 pounds is 41%. In a random sample of 210 babies born in the hospital, 102 weighed over 7 pounds. Is there enough evidence to reject the hospital's claim at the 0.5 level of significance? a. State the null hypothesis H0 and the alternative hypothesis H1.b.Determine the type of test statistic to use c. Find the value of the test statistic. Round to three or more decimals.d. Find the p-value (round to three decimal places)e. Can we reject the claim that the proportion of full-term babies born in the community that weigh more than 7 pounds is 41%?
Consider the following hypotheses: Ho: u 2 128 НА: и < 128 A sample of 75 observations results in a sample mean of 122. The population standard deviation is known to be 31. (You may find it useful to reference the appropriate table: z table or t table) a-1. Calculate the value of the test statistic. (Negative value should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.) Test statistic a-2. Find the p-value. p-value < 0.01 O 0.01 s p-value < 0.025 0.025 s p-value < 0.05 0.05 s p-value < 0.10 p-value 2 0.1O

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a. Identify the null and alternative hypotheses. b. identify the test statistic c. identify the p-value