Answer:
93.32% probability of obtaining a value less than or equal to -7.
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 is the likelihood of obtaining a value less than or equal to -7?
This is the pvalue of Z when X = -7.
So




has a pvalue of 0.9332.
So there is a 93.32% probability of obtaining a value less than or equal to -7.
I would say 25 pounds because the graph displays a proportional relationship( a straight line) so the next point in the line would be 25 pounds.
I hope this helped! :-)
You are finding 3 1/6 - 1 5/6.
To solve, you should first change it so that the numerator of the first fraction is greater than the numerator of the second. Note that both have the same denominator (6). Subtract as usual:
3 1/6 = 2 7/6
2 7/6 - 1 5/6 = 1 2/6
1 2/6 is your answer.
~
Answer:
50 degrees (same as the other degree)