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Course dashboard Time left 0:49:17 If the grades of 100 students have mean 18 and standard deviation 4. If d we subtract 3 from each

Course dashboard Time left 0:49:17 If the grades of 100 students have mean 18 and standard deviation 4. If d we subtract 3 from each student, then we divide by -8. The new standard deviation is 00 Select one: O a. 2 O b. 1/2 O c. -1/2 O d. -2

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