QUESTION 1 -5

A statistics instructor believes that more than 20% of Evergreen Valley College (EVC) students attended the opening night midnight showing of the latest Harry Potter movie. She surveys 84 of her students and finds that 11 attended the midnight showing. Conduct the appropriate hypothesis test at the 10% significance level.

1. The alternative hypothesis is:

2. The critical value is:

3. The test statistics value is:

4. The results (in Question 3) indicate the following:

5. The following conclusion can be drawn:

QUESTION 6 - 10

Consider the data in the following contingency table and perform the chi-square test of independence. Use a 0.05 level of significance.

Cat Dog

Men 207 Women 231

282 242

6. The null hypothesis is:

7. The critical value is:

8. The test statistics value is:

9. The results (in Question 8) indicate the following:

10. The following conclusion can be drawn:

FORMULAE

=

=

= (1 )

Level of significant(a)	Type of hypothesis test	z-limit(s)
0.01 (1%)	two-sided	2.58
0.05(5%)	two-sided	1.96
0.10(10%)	two-side	1.645
0.01	one sided lower-tailed	-2.33
0.05	One sided lower- tailed	-1.645
0.10	One sided- lower tailed	-1.28
0.01	One sided- upper- tailed	+2.33
0.05	One sided- upper- tailed	+1.645
0.10	One sided-upper- tailed	+1.28