Answer:
y = 10x - 2
Step-by-step explanation:
Answer:
just guess it there a 50% you get it right \( ̄︶ ̄*\))
Step-by-step explanation:
The glasses + no glasses must = the total of people he has in his chart which is 32.
We have given that,
Marcos makes a table to show how many students in his class wear glasses. There are 18 boys and 14 girls in the class. There are 5 boys and 7 girls who wear glasses.
The first one
Boys 5-13-18
<h3>What is the formula for the total number of people?</h3>
glasses + no glasses must = the total of people
Girls 7-7-14
Total 12-20
make sure that when the 18+14 is 32.
Therefore the glasses + no glasses must = the total of people he has in his chart which is 32.
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Answer:
The proportion of the chocolate bars produced that have mass within one standard deviation of the mean is 0.6826 = 68.26%.
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be 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.
A consumer organization finds that the mass of the chocolate bar is normally distributed with a mean of 200.4 g and a standard deviation of 0.05 g.
This means that 
a) Find the proportion of the chocolate bars produced that have mass within one standard deviation of the mean.
pvalue of Z when X = 200.4 + 0.05 = 200.9 subtracted by the pvalue of Z when X = 200.4 - 0.05 = 199.9.
X = 200.9



has a pvalue of 0.8413
X = 199.9



has a pvalue of 0.1587
0.8413 - 0.1587 = 0.6826
The proportion of the chocolate bars produced that have mass within one standard deviation of the mean is 0.6826 = 68.26%.