A sample of 90 men and 110 women is asked about their handedness. A two-way table of observed counts follows:
|
|
Left-handed
|
Right-handed
|
Total
|
|
Men
|
11
|
79
|
90
|
|
Women
|
9
|
101
|
110
|
|
Total
|
20
|
180
|
200
|
a. Calculate a table of expected counts for these data.
b. Calculate the value of the chi-square statistic for testing the null hypothesis of no relationship between sex and handedness.