Question

Question 8 to question 19 are true or false Subject: ADMN210- Applied Business Statistics

8) A hypothesis test always contains the possibility of committing one of two types of errors callled Type I and Type lI errors d u e avoda b 9) The null hypothesis is rejected if the p-value is greater than the significance level 10) The probability of committing a Type I error is called the level of significance 11) In hypothesis testing the statistical conclusion is either to rejecr K to teyect the null bypothesis based on the sample data Chisquare goodness of fittests are always one-tailed tests 12) Chi-square rest of independence is not useful for analyzing nominal data 13) In a chi-square test, if there are 8 rows and 4 columns, the number of degrees of freedom for the chi- square statistic would be 32 14) If the coefficient of correlation berween two numerical variables is -1, it means that the two variables are not related co A-es rallt ybut olgas ns nwid gidenoos 15) The numerical value of the coefficient of determination r2 varies from-Ito+1 16) In the equation y 157+00407 x, which represents a straight line, 00407 is the imtercepr of the tine 17) In a simple regression analysis the predictor variable is called the independent or explanatory variable 18) If a regression model has an 12 of 0.20, it means that about 20% of the variation in the dependent variable is explained by the regression model. 19) Usually, the first step in regression analysis is to constructa scatter plot 20 The ullbunother a hynothesis test contains a statement about the population parameter such as the

Answer 1

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