It is reported that 40% of women have had their child before the age of 24. A poll was conducted on 75 women and 26 of them said they have had their child before the age of 24. We want to test at 10% significance level to see whether there is enough evidence to say there is less that 40% of women that have had their child before the age of 24. Ho : p = 0.4 vs. Ha : p