KA certain drug is used to treat asthma. In a clinical trial of the drug, 26 of 292 treated subjects experienced headaches (based on data from the manufacturer). Theaccompanying calculator display shows results from a test of the claim that less than 10% of treated subjects experienced headaches. Use the normal distribution as anapproximation to the binomial distribution and assume a 0.05 significance level to complete parts (a) through (e) below.DView an example Get more help.AWSXдвa. Is the test two-tailed, left-tailed, or right-tailed?Left-tailed testOTwo-tailed testO Right tailed testdb. What is the test statistic?z = -0.62(Round to two decimal places as needed.)c. What is the P-value?P-value=(Round to four decimal places as needed.)DMonroe's Temp.....docxRemoved#3ED80F3C$4aF4RFVSAMPLE Persuas....pdf%5TG6BAMacBook Air&F6YH5373255 (1) (1).docx&7N84F7UJ*8MDIIFBID 5373255 (1).docx(9KDDF9OH)OLcommandF10PClear all:;F11Ioption{[+=?1-Prop2Testprop <0.1z=-0.624219452p=0.2662417369-0.0890410959n-292Check answerQuestion ViewerShow AllF12}111TXdeleteT

According to the given information, we have The distribution used is normal distribution. (Left…

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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 researcher wants to select a sample from a population with a mean (µ)= 60 and administer a treatment to individuals in the sample. He thinks the treatment will help improve scores. a. State the hypotheses for a one-tailed test. b. For a one-tailed test, would the critical region be located in the positive or right-hand tail of the distribution, or in the negative or left-hand tail of the distribution?
2. Which of the following are practical ways to assess normality of the residuals? Select all that apply a. Normal probability plots (the R command is qqnorm() b. Anderson-Darling tests. c. Shapiro-Wilks tests. d. Boxplots e. Just ask if they are normal, or, guess, because, who really cares?
A plant pathologist wants to compare two strains of bacteria in terms of its reproduction rate. Test of normality showed that the two samples have heterogeneous variances. Which of the following would you advise the plant pathologist to conduct? A. t-test B. Mann Whitney C. Kruskal Wallis test . D Anova F-test
A certain drug is used to treat asthma. In a clinical trial of the drug, 18 of 268 treated subjects experienced headaches (based on data from the manufacturer). The accompanying calculator display shows results from a test of the claim that less than 11% of treated subjects experienced headaches. Use the normal distribution as an approximation to the binomial distribution and assume a 0.05 significance level to complete parts (a) through (e) below. a. Is the test two-tailed, left-tailed, or right-tailed? Left-tailed test Right tailed test Two-tailed test b. What is the test statistic? Z= (Round to two decimal places as needed.) 1-PropZTest prop < 0.11 z = -2.241213063 p=0.0125061385 p=0.0671641791 n = 268
Which of the following is/are TRUE at 5% level of significance? I. We can assume independence of errors since the subjects were randomly assigned to one of the three diets. II. We have sufficient evidence to say that the data are not normally distributed for each diet.A. I only B. II only C. Both I and II D. Neither I nor II
A researcher predicts that smoking cigarettes decreases a person's sense of smell. On a test of olfactory sensitivity (smell), the mean for non-smokers is 18.4. A sample of 12 people who smoke a pack each day have a sample mean of 16.25 (sample variance = 4.75). Complete the following statement: We ["", ""] the null. Smokers have ["", "", ""] in olfactory sensitivity compared to non-smokers.
An article in a Journal reports that 34% of American fathers take no responsibility for childcare. A researcher claims that the figure is higher for fathers in the town of Littleton. A random sample of 234 fathers from Littleton yielded 96 who did not help with childcare. How many populations? 01 What is the parameter? O Mean O Proportion O Difference between Means O Variance Standard Deviation
Listed below are systolic blood pressure measurements (mm Hg) taken from the right and left arms of the same woman. Assume that the paired sample data is a simple random sample and that the differences have a distribution that is approximately normal. Use a 0.05 significance level to test for a difference between the measurements from the two arms. What can be concluded? Right arm Left arm 151 136 120 134 134 181 174 180 156 138 In this example, Ha is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the measurement from the right arm minus the measurement from the left arm. What are the null and alternative hypotheses for the hypothesis test? O A. Ho: Hd = 0 O B. Ho: Hd 0 O C. Ho: Hd = 0 O D. Ho: Hd 0 H1: Ha>0
A certain drug is used to treat asthma. In a clinical trial of the drug, 20 of 289 treated subjects experienced headaches (based on data from the manufacturer). The accompanying calculator display shows results from a test of the claim that less than 9% of treated subjects experienced headaches. Use the normal distribution as an approximation to the binomial distribution and assume a 0.05 significance level to complete parts (a) through (e) below. a. Is the test two-tailed, left-tailed, or right-tailed? b. What is the test statistic? c. What is the P-value? d. What is the null hypothesis, and what do you conclude about it? Identify the null hypothesis. Decide whether to reject the null hypothesis. Choose the correct answer below. e. What is the final conclusion?
A certain drug is used to treat asthma. In a clinical trial of the drug, 29 of 289 treated subjects experienced headaches (based on data from the manufacturer). The accompanying calculator display shows results from a test of the claim that less than 9% of treated subjects experienced headaches. Use the normal distribution as an approximation to the binomial distribution and assume a 0.05 significance level to complete parts (a) through (e) below. a. Is the test two-tailed, left-tailed, or right-tailed? O Right tailed test OTwo-tailed test Left-tailed test b. What is the test statistic? z = (Round to two decimal places as needed.) 1-Prop2Test prop<0.09 z-0.614582679 p-0.7305848219 p-0.1003460208 A n-289
A certain drug is used to treat asthma. In a clinical trial of the drug, 30 of 281 treated subjects experienced headaches (based on data from the manufacturer). The accompanying calculator display shows results from a test of the claim that less than 10% of treated subjects experienced headaches. Use the normal distribution as an approximation to the binomial distribution and assume a 0.05 significance level to complete parts (a) through (e) below. a. Is the test two-tailed, left-tailed, or right-tailed? Right tailed test Two-tailed test Left-tailed test b. What is the test statistic? Z= (Round to two decimal places as needed.) c. What is the P-value? 1-PropZTest prop 0.1 D. Ho: p = 0.1

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