A random variable X is not normally distributed. It has a mean of 31 and a standard deviation of 6. List the givens with correct symbols: = 31 = 6 a) If you take a sample of size 12, can you say what the shape of the sampling distribution for the sample mean is? Why or why not? Check all that apply. O o is known O population is normal O o is unknown On is less than 30 On is at least 30 O population is not normal b) For a sample of size 12, state the mean and the standard deviation of the sampling distribution of the sample mean. mean of the sampling distribution of the sample mean when n = 12: standard deviation of the sampling distribution of the sample mean when n = 12 rounded to two decimal places:

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Sh9 Please help me.

K The numbers of regular season wins for 10 football teams in a given season are given below. Determine the range, mean, variance, and standard deviation of the population data set. 2, 10, 15, 4, 12, 9, 13, 10, 5, 7 The range is 13. (Simplify your answer.) The population mean is 8.7. (Simplify your answer. Round to the nearest tenth as needed.) The population variance is (Simplify your answer. Round to the nearest tenth as needed.)

Assume the random variable X is normally distributed with mean = 50 and standard deviation σ = 7. Find the 77th percentile. Click the icon to view a table of areas under the normal curve. The 77th percentile is (Round to two decimal places as needed.) n example Get more help - Clear all Check answer

Part d, e and f please

Average number of Facebook friends I mean of 115 and a standard deviation of 4245 individuals are randomly chosen find the first quartile for the average number of Facebook friends

How do I find the sample mean and sample deviation