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Hello students.
00:02
Today we will discuss about this question.
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In this question we are given that suppose that we will randomly select a sample of 64 measurements from a population having a mean.
00:14
So here we can say sample size that is equals to 64 and here population that have a mean that is equals to here mean is equal to 20 and the standard deviation.
00:31
That is equals to 4.
00:34
Now, in the part a, we need to describe the shape of the sampling distribution of the sample mean x bar, and do we need to make any assumption about the shape of the population? so here we need to find the shape of population.
00:52
Is there any assumption about it or not? so then, after b, in the part b, we need to find the mean, that is equals to question mark, and the standard deviation that is equals to question mark of the sampling distribution of the sample mean that is x bar.
01:19
So here first of all, we can say that from the given data we have sample that is n is equals to 64, mu that is 20 and sigma that is equals to 4.
01:31
Now the body should be around normal because n is equal to 60...