The quiz grades of a math class are given.
81, 75, 68, 97, 69, 81, 89, 74, 75, 82, 91, 90
un
the grades are normally distributed with a mean of 81 and a standard deviation of 9
1.0
what is the 2-score of the lowest grade in the quiz?
round the answer to the nearest hundredth.
-1.41
-1.30
nex
ende

Can someone me and plz do the problem

What is the measure of the smallest angle in the diagram? 15 29 32 45

Question 1 of 10 2 points different groups of 50 graduates of an engineering school were asked the starting annual salary for their first engineering job after graduation, and the sampling variability was low. if the average salary of one of the groups was $65,000, which of these is least likely to be the average salary of another of the groups? o a. $64,000 o b. $65,000 o c. $67,000 o d. $54,000