Question

I cannot seem to to figure out the answers to the following math questions.
style=”color:rgb(0,0,0);background-color:transparent;”>A student receives the following​ grades, with an A worth 4​ points, a B worth 3​ points, a C worth 2​ points, and a D worth 1 point. What is the​ student’s weighted mean grade point​ score?B in 3-three​-credit classesD in 1 three​-credit classA in 1 two​-credit classC in 1 two​-credit class
Mean grade point score is _____

Sample annual salaries​ (in thousands of​ dollars) for employees at a company are listed.
41 46 54 55 37 37 41 46 54 35 55 41 52
​(a) Find the sample mean and sample standard deviation.​(b) Each employee in the sample is given a 66​% raise. Find the sample mean and sample standard deviation for the revised data set.​(c) To calculate the monthly​ salary, divide each original salary by 12. Find the sample mean and sample standard deviation for the revised data set.​(d) What can you conclude from the results of​ (a), (b), and​ (c)?

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