According to a recent Current Population Reports, the population distribution of number of years of education for self-e

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According To A Recent Current Population Reports The Population Distribution Of Number Of Years Of Education For Self E 1 (68.36 KiB) Viewed 48 times

According to a recent Current Population Reports, the population distribution of number of years of education for self-employed individuals in the United States has a mean of 14.4 and a standard deviation of 2. (a) Identify the variable. O number of years of education number of self-employed individuals in the United States O number of educated individuals in the United States O number of self-employed individuals (b) Find the mean and standard deviation of the sampling distribution of X for a random sample of size 97. Mean 14.4 (1 decimal place) Standard Deviation 203 (3 decimal places) (c) Find the mean and standard deviation of the sampling distribution of for a random sample of size 400. Mean 14.4 (1 decimal place) (3 decimal places) Standard Deviation = 1 (d) Describe the effect of increasing n. The mean increases. ✔The mean stays the same. The mean decreases. The standard deviation of the sampling distribution increases. The standard deviation of the sampling distribution stays the same. ✔The standard deviation of the sampling distribution decreases. (e) If a sample of size 400 is selected from this population, what is the probability that the sample average will be less than 14.8? probability= (3 decimal places)