The accompanying sheet of data represents a survey of 955 ch

The accompanying sheet of data represents a survey of 955 children who have been evaluated for autism spectrum disorder. For each subject (they are numbered) the subjects sex is listed in one column and whether or not the subject was diagnosed with autism spectrum disorder is listed in another column. There are 437 females in which 4 of them have autism and there are 518 males in which 10 of them have autism.

(a) Scientists believe that more boys have autism than girls. State the null and alternative hypotheses relative to this belief.

(b) Find the z test statistic.

(c) What is the P-value for your z?

(d) Do the data give good evidence that a smaller proportion of girls have autism than boys

Solution