Refer to the accompanying table, which describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. Find the mean and standard deviation for the number of girls in 8 births. Click the icon to view the data table. Table of numbers of girls and probabilities - X The mean is μ= girl(s). (Round to one decimal place as needed.) Number of Girls x P(x) 0 0.005 0.026 2 0.115 3 0.217 4 0.266 5 0.228 6 0.105 7 0.033 8 0.005

Find the range, the standard deviation, and the variance for the given samples. Round non-integer results to the nearest tenth. 3, 5, 9, 15, 18, 21, 25 range       standard deviation       variance

Refer to the accompanying table, which describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. Find the mean and standard deviation for the number of girls in 8 births. Click the icon to view the data table. The mean is µ = girl(s). (Round to one decimal place as needed.) Table of numbers of girls and probabilities Number of Girls x P(x) 0.006 1 0.031 2 0.114 3 0.212 4 0.266 0.224 0.115 7 0.029 8. 0.003 Print Done

The ages​ (in years) of a random sample of shoppers at a gaming store are shown. Determine the​ range, mean,​ variance, and standard deviation of the sample data set. 12, 20, 23, 13, 18, 17, 22, 17, 15, 16 The range is The mean is ( Simplify your answer. Round to the nearest tenth as​ needed.) The variance is (Simplify your answer. Round to the nearest hundredth as​ needed.) The standard deviation is (Simplify your answer. Round to the nearest tenth as​ needed.) Can you please explain me this math problem having trouble understanding. Thank you.