Please answers only. Thank you. 1. If the population variance of a set of data is 25, what is the population standard deviation?2. What is the variance of a sampling distribution of its means if it...

Please answers only. Thank you. 1. If the population variance of a set of data is 25, what is the population standard deviation? 2. What is the variance of a sampling distribution of its means if it has a population variance of 9.0 and ? = 3? 3. If the mean of the sampling distribution of the means is 12.4, what is the mean of the population? 4. If the population variance of a set of data is 16, what is the population standard deviation? 5. If the population standard deviation of a data set is 5, what is the population variance?