A local environmental organization is interested in determining if the proportion of SUVs un SB has increased from the last years value of 10% to an alternative value closer to 15%. A saample of 400 cars passing through state street intersection was raken on a particular morning abd it was found that 60 of the cars were SUVs
a) State an appropiate null hypothesis and an alterative hypothesis
b) What would you conclude at the 5% level of significance?