A marketing research company needs to estimate the average total compensation of CEOs in the service industry. Data were randomly collected from 18 CEOs and the 95% confidence interval was calculated to be ($218,126, $583,618). Based on the interval above, do you believe the average total compensation of CEOs in the service industry is more than $300,000? Select one: 0 a. Yes, and I am 95% confident of it. O b. Yes, and I am 100% confident of it. O c. I cannot conclude that the average total compensation exceeds $300,000 at the 95% confidence level because the interval contains values below $300,000 too. Q d. Clearly average total compensation of CEOs in the service industry is more than $300,000 because the top of the confidence interval is way above this figure. Compared with the width of a 90% confidence interval, if all other quantities are unchanged, the 95% confidence interval will be Select one: Q a. Unchanged O b. Wider O c. Narrower 0 d. Biased