A 95% confidence level interval will have 0.52 (lower interval) & 0.68 (upper interval) which means that that if 90 individuals root for North HS then p value is 0.6 which will fall in the 95% confidence interval range.
For the option B the p value will also be same as in case A hence B is true as an alternative hypothesis.
To write this fraction as a decimal, what you must do in this case is to divide 4 by 5. Doing the division we have: 4/5 = 0.8 answer: the fraction of home runs hit during the first half of the season as a decimal is 0.8
