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### Video Transcript

All right, So this question wants us to sample 50 Wrong. The total 2500 using Excel. So since everyone's answers, we're gonna be totally I'll just talk. Get this. So first, like, always will pull up our sampling procedure where first we label each element in the population between one and capital end. So in this case will have cells ranging from 1 to 2500. Then we'll give it random number between zero and one for each cell and then finally will pick the lowest 50 numbers to be our sample. Then Part B wants us to find an estimate for the population. Mean so we want a point estimate. So our point estimate is going to be X bar, which is the sample mean, which is just the sum of all the X values which our salaries someone well, the salaries divided by our sample size, which in this case is 50 managers, then part See, we want an estimate for our standard deviation. So we'll use SX, which is our sample standard deviation, which is equal to Since this is a sample, it's one over and minus one times the sum of each points distance from the mean squared. And then part D wants us to find a point estimate of the population proportion having completed the training program. So Rp hat is simply number of successes over total, which is in this case number yes, over 50.

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