Of the following, which is untrue?
A.Majority of Z scores in a right skewed distribution are negative.
B.In skewed distributions the Z score of the mean might be different than 0.
C.For a normal distribution, IQR is less than .
D.Z scores are helpful for determining how unusual a data point is compared to the rest of the data in the distribution.
Find the derivatives of the following functions.
The table shows the number of students in a school's beginning and advanced orchestra classes. The student pay a fee for instruction books: $5 for brass, $5 for woodwinds, and $8 for strings. Find the amount each class will spend on books.