Q13 to 15 only need correct option ..no explanation so send me ASAP thanks

13. A sample of 25 observations is taken om an innite population. The sampling distribution of f} is A. not normal since n 30 and n(l-P) > 30 14. The fact that the sampling distribution of sample means can be approxith by a normal probability distribution whenever the sample size is large is based on the A. central limit theorem B. fact that we have tables of areas for the normal distribution C. assumption that the population has a normal distribution D. None of these alternatives is correct. 15. For any data set, regardless of shape, the percentage of values that are found within distances of 2 standard deviations from the mean must be at least A. at least 75% B. at least 68% C. at least 95% D. at least 89%