Question:

In a new experimental teaching method, when students have questions in class, they send them to the instructor via a laptop. In a study, of new method, 30 male and 30 female students participated (consider these as two random samples). Of the sampled male students, 17 said they liked the new method than the traditional "raise hand in class" method. Of the sampled female students, 13 said they prefer the new method.

An educator would like to see if the proportions of students who prefer the new method are different between males and females.

Let p1 be the true proportion of male students who prefer new method and p2 be the true proportion of female students who prefer new method.

1. We can use the formula covered in class (i.e., online notes) to construct a confidence interval for difference of two proportions as each sample has at least "X" successes and at least "Y" failures

Options for X: 13, 30, 9, 5

Options for Y : 31, 27, 30, 5

What is the correct answer for X and Y

2. 90% condfidence interval for p1-p2 is ?

3. Based on the confidence interval estimation in part 2, what would be your answer to the educator, who was interested in the outcome of the study?

SP20 MATH 202 MW 9:15a-10:55a Homework: Recommended Problems for Section 4.1 Score: 0 of 1 pt 1 of 17 (0 complete) 4.1.1 What is the difference between univariate data and bivariate data? Choose the correct answer below. O A. In univariate data, the data are qualitative, In bivariate data, the data are quantitative. O B. In univariate data, there is one mean. In bivariate data, there are two means O C. In univariate data, a single variable is measured on each individual In bivariate data, two variables are measured on each individual. O D. In univariate data, there are only positive values and zeros. In bivariate data, there are positive values, negative values, and zeros. Click to select your answer and then click Check Answer Clear All All parts showing A[1\"] 1-3 Suppose L is the line in R3 dened by (3353] = {2:311] + 1[1,D,1]where DO :1 r on Find a if [4,3,0] is a paint an L. 1.4- Explain the difference between a singular and a nun-singular matrix. Show that a nunsingular matrix must be square. [2] 0 (5pts) 20. Find a sequence of elementary matrices whose product is the given non-singular matrix: 2 4Question 25 Simple Regression analysis and Mumvariate Regression Analysis me raised to each other in ihn following way; @) Both techniques use a goodness of fit musmire, but the goodness of fit meamie in Muhivanale Regression adjusts Nu the fact that an coun miinhis aduspammin Ingphompants Simple Regression is simpler than Multivariate Regression because the dependent variable is aways a straight line function of the independent sunable un a graph Multivariate regression always proves causation, but simple regression can never prove causation Both simple and multiple regression face the problem of multicollinearity