Supervisor: "Congratulations. You received a score of 3.4 on your annual review. Merit increases are given out starting at .5% a
2 answers:
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Answer:
a) 1.92
b) 3.25
c) 1.5
d) -5.23
Step-by-step explanation:
We are given the following in the question:
4, 7, -1, 1, 0, 5, -2, 2, -1, 6, 5, -3
a) mean of score change
b) standard deviation for this population
where are data points,
is the mean and n is the number of observations.
Sum of squares of differences = 126.92
c) median change score
Sorted data: -3, -2, -1, -1, 0, 1, 2, 4, 5, 5, 6, 7
Median =
d) change score that is 2.2 standard deviations below the mean.
Answer:
Step-by-step explanation:
Given :
Juan rolled a six-sided number cube 18 times.
The number two occurred four times.
To Find: Juan claimed the experimental probability of rolling a two was approximately 1/9. Why is Juan’s experimental probability incorrect?
Solution:
Total events = number of times cube rolled = 18
Favorable events = The number two occurred four times. = 4
So, Experimental probability =
=
=
Thus the experimental probability of rolling a two was
So, Juan’s experimental probability was incorrect.