Which of the followingstatements is(are) TRUE?I. Chi-square goodness-of-fit testcan be performed.II. Suppose the Chi-squaregoodness-of-fit test is appropriate,there is sufficient evidence to saythat the incidence of road accidentsis not equally likely to happenamong days of the week.Both I and IIO Neither I nor II The lawmaker asked all mayors of herdistrict to request for additionaltraffic enforcers who will strictlyimplement traffic road law andensure road safety daily, particularlyon days with high incidence of roadaccidents. Based on the original plan,these additional traffic enforcers willbe distributed equally among days ofthe week.Based on the 345 randomly selectedcases, is the incidence of roadaccidents equally likely to happenamong days of the week?R COMMANDER OUTPUTcounts: enforcersMon Tue Wed Thu Fri Sat Sun46 46 59 49 574840Chi-squared test for given probabilities.Tabledata:X-squared = 5.3449, df = 6, p-value = 0.5004

Given χ2 =5.3449, df=6, p value=0.5004

Answered: Which of the following statements…

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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Which of the following statements about hypothesis testing iS correct? o In hypothesis testing, sample data are used to test claims about the value of population parameters. o In hypothesis testing, population data are used to test claims about the value of sample statistics. In hypothesis testing, population data are used to test claims about the value of population parameters. o None of the above statements are true. 0 耳

Default value of a. If a is not given, use .05. A random sample from a certain population consists of the following 5 observations: 12, 10, 18, 18, 17. Test the claim that the population mean is less than 19, and give the 5 elements of the test. Assume normality if necessary.
A) Was there a significant difference in the number of colds between those who took vitamin c (1) and those that did not (2) B) What was the average number of colds in the group that did take Vitamin C
Which of the following is not an assumption of the χ2 goodness-of-fit test? Group of answer choices It is a nonparametric test. It is appropriate only for ordinal data. The frequency in each cell should be at least 5. The sample should be randomly selected.
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Null and alternative hypotheses are statements about O a. None of these O b. b. sample statistics C. it depends - sometimes population parameters and sometimes sample statistics. O d. d. sample parameters e. population parameters
Fill in the blanks please. a) It is often the case in practical applications that a normality assumption is not tenable. In these circumstances, it is desirable to base inference on tests that are valid over a wide range of distributions of the parent population. Such tests are called .............................. tests b) Of all possible estimators of α and β that are linear in the Yi and unbiased, the least squares estimators that have the smallest variances are said to be………………………….…………….……………………………. according to the …..………………………..……………… theorem thanks
Which of the following statements about hypothesis testing is false? A. A Type I error is the chance that the researcher rejects the null hypothesis when in fact the null hypothesis is true. B. The test will never confirm the null hypothesis, only fail to reject the null hypothesis. C. In both the one - tailed and two-tailed tests, the rejection region is one contiguous interval on the number line. D. The rejection region is always given in units of standard deviations from the mean.
Researchers are trying to look at the possible reasons behind the aging population of Filipino farmers. One possible link to this issue is the decrease in the amount of pay farmers are receiving. Based on the Philippine Statistics Authority (PSA) report, farmers earn an average of 8,000 pesos in a month. R COMMANDER OUTPUT Shapiro-Wilk normality test data: IncomeMonth W - 0.6007, p-value < 2.2e-16 R COMMANDER OUTPUT R COMMANDER OUTPUT Wilcoxon signed rank test with continuity correction One Sample t-test data: IncomeMonth t - 1.9348, df - 669, p-value - 0.9733 data: IncomeMonth V = 79590, p-value - 0.000000006355
Which of the following statements is true of Group 1’s mean FIQ score? Group of answer choices: 1. Group 1’s mean FIQ score is not significantly different from Group 2’s mean FIQ score 2. Group 1’s mean FIQ score is significantly different from Group 2’s mean FIQ score 3. Group 1’s mean FIQ score is significantly higher than Group 2’s mean FIQ score 4. Group 1’s mean FIQ score is significantly lower than Group 2’s mean FIQ score 5. None of the above
All of the following statements are true about independent-samples t tests EXCEPT ______. IS it 1- they can be used when the population variance is unknown OR 2 - they can be used when the sample means are unknown
Last year the mean cost u for a one-bedroom rental in a certain city was $1,200 per month. Eli is looking for a one-bedroom apartment and is investigating whether the mean cost is less now than what it was last year. A random sample of apartments had a sample mean c of $1,180 per month. Assuming all conditions for inference are met, Eli will conduct a hypothesis test as part of his investigation. Which of the following is the correct set of hypotheses? Subi Ho : H = 1,200 A Ha : µ > 1,200 Ho : H = 1,200 B H : µ < 1,200 Ho : T = 1,200 Ha : I < 1,200 Ho : = 1,180 H: 1,180 Ho : = 1,180 H: < 1,180

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