A researcher is studying the television watching habits of teenage girls and boys. The results (in minutes/day) are given below. He would like to determine if there is reason to conclude that the variation in the amount of time girls spend watching television is greater that of boys. Girls Boys 221 251 223 254 167 222 147 173 186 291 340 239 204 131 240 135 193 282 a) What is the critical value at the 0.05 significance level? For full marks your answer should be accurate to at least two decimal places. Critical value: 0 b) What is the test statistic? For full marks your answer should be accurate to at least two decimal places. Test statistic: 0 c) Using the 0.05 significance level, can we conclude that the variation is greater among girls? Yes, because the test statistic is greater than the critical value O Yes, because the test statistic is less than the critical value O No, because the test statistic is greater than the critical value O No, because the test statistic is less than the critical value