Which of the following sentences is correct ? Select one: a. The probability that the absolute value of estimation error, the difference between the parameter and estimator, is less than or equal to...

Plzz choose correct options. Ans is more than 1 options. And explain

Extracted text: Which of the following sentences is correct ? Select one: a. The probability that the absolute value of estimation error, the difference between the parameter and estimator, is less than or equal to error level is called risk. O b. If the sampling ratio is greater than 10%, binomial approximation to hypergeometric distribution can be used to compute hypergeometric probability. c. The natural tolerance interval is always inside the confidence interval for population mean. O d. The degrees of freedom of non-central t-distribution is found differently, and sample variances are used in computation. е. The normal distribution is not used in the derivation of confidence interval for population variance.