QUESTION 47 Questions 44 - 51 concern the following idea: Bob runs a phone company called Phantastic Phones. He conducts a survey on a random sample of 500 of his customers, in which he asks questions about their phone use habits, expenditure on phones, and so on. From the survey, the sample proportion of customers who make international calls on their mobile phone is calculated as 0.15 and a 95% confidence interval for the population proportion is correctly calculated from the sample data as C2 = (0.119, 0.181). A different sample, also of size 500 was taken, and it yielded a lower sample proportion of customers who make international calls. If a 95% confidence interval was calculated using this new sample, how would the width of the new confidence interval compare to C2? O a. it would be smaller O b. impossible to calculate without more information O c. it would be wider O d. it would be the same width QUESTION 48 Questions 44 - 51 concern the following idea: Bob runs a phone company called Phantastic Phones. He conducts a survey on a random sample of 500 of his customers, in which he asks questions about their phone use habits, expenditure on phones, and so on. As part of one of his analyses on these 500 people he has the following ANOVA table (with some parts obscured): Source DF Sum Sq Mean Sq F Between ???? 666.99 ??? ? Within 494 ??? ? 26.38 Total 499 ??? ? Calculate the value for the sum of squares between (ie SSB). Please give your answer correct to 2dp