In: Statistics and Probability
In a random sample of males, it was found that 21 write with their left hands and 219 do not. In a random sample of females, it was found that 64 write with their left hands and 437 do not. Use a 0.01 significance level to test the claim that the rate of left-handedness among males is less than that among females. Complete parts (a) through (c) below.
a) identify the test statistic
b) identify p-value
c) the 90% confidence interval is?