Line up all the numbers from decreasing to increasing number (looks like you already have that). Then, cross out the numbers on the left, than on the right, and keep crossing it out until you get to the middle. That is your median.
Answer: only the first one is correct.
There are 2 mistakes in the second one. The Multiplication is wrong and the sign is wrong. Negative × Negative =Positive
-34× -57 = 1938
The third is also incorrect. 5.5 × -35 = -192.5 not even close!
Step-by-step explanation: It is not easy to see the dots used to mean multiply. But that's what they do.
Answer:
21.19% eat less than 10 pieces of candy on halloween
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean
and standard deviation
, the zscore of a measure X is given by:

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:

What percentage eat less than 10 pieces of candy on halloween
This is the pvalue of Z when X = 10.



has a pvalue of 0.2119
21.19% eat less than 10 pieces of candy on halloween
78×45/100
=35.1. As a result, 35.1 is 45% of 78. Hope it help!