Question

blem MAA Select an Answer RICA Logged in as yamegandi z Test of a Single Mean T Test of a Single Mean F 2 Test of a Single Proportion e m 12 T Test of a Single Proportion z Test for Comparing Means T Test for comparing Means Hypothesis Test Z Test for comparing Proportions . Whether a student starts college in the Fall Spring, or Summer has no no T Test for Matched pairs Chi-Squared Test for Goodness-of-Fit 2. The average GPA in the College of Arts and Sciences is less than 34. You know the standard delvation for Chi-Squared Test for Independence 3. Two local colleges have different dropout rates Z Test for independent Factors 4. Among students who are registered to vote, 43% are registered Democrats. 20% are registered Select an Answer Republicans, and 29% are registered independents, Note: In order to get credit for this problem all answers must be correct bit Answers

Answer 1

Ans 1 -1) we will use chi-square test for independence

2) Z test for a single mean

3) T-test for comparing means

4) Chi-square test for goodness of fit

Ans 2 ) using minitab> stat>tables >Chi square

we have

Chi-Square Goodness-of-Fit Test for Observed Counts in Variable: Observe count

Using category names in class

Test Contribution
Category Observed Proportion Expected to Chi-Sq
Freshmen 143 0.30 138 0.181159
Sophomore 109 0.25 115 0.313043
Junior 112 0.25 115 0.078261
Senior 96 0.20 92 0.173913

N DF Chi-Sq P-Value
460 3 0.746377 0.862

class	Observe count	Expected count
Freshmen	143	138
Sophomore	109	115
Junior	112	115
Senior	96	92

the value of chi square is 0.746

p value is 0.862

option A is true