Part: 1 / 2 Part 2 of 2 (b) Assume the population is not normally distributed. Is the confidence interval still valid? O Yes O No, the sample size is too small X 5Question 1 of 7 (2 points) | Question Attempt: 1 of 1 Interpret calculator display: The number of words typed per minute was measured for a sample of typists. The following display from a TI-84 Plus calculator Espanol presents a 95% confidence interval for the population mean typing speed. ZInterval (36.43, 48.85) x =42.64 n=21 Part: 0 / 2 Part 1 of 2 (a) Interpret the confidence interval. We are % confident that the population mean number of words per minute is between and X Part: 1 / 2 Part 2 of 2