A researcher selects a sample of 100 people to investigate the ...

[P68T]

A researcher selects a sample of 100 people to investigate the relationship between gender (male/female) and registering to vote. The sample consists of 40 females, of whom 30 are registered voters, and 60 males, of whom 40 are registered voters. If these data are used for a chi-square test for independence, what is the observed frequency for registered males?
 
  A) 12
  B) 28
  C) 40
  D) 42

Question 2

A hypothesis test produces a t statistic of t = 2.20. If the researcher is using a two-tailed test with  = .05, how large does the sample have to be in order to reject the null hypothesis?
 
  A) At least n = 11
  B) At least n = 12
  C) At least n = 13
  D) At least n = 14

[mrphibs]

Answer to Question 1

C

Answer to Question 2

C

[P68T]

Gracias!

[apple]

Thanks for the timely response, appreciate it