Answer:
0.031823
Step-by-step explanation:
Answer:
yes
Step-by-step explanation:
yes
Answer:
720 cubic units
Step-by-step explanation:
You must simplify top first so you get 36*4 and that is 144. Then do the bottom and you get 10 so the answer is 144/10 which is 14.4 or 72/5
Answer:
3.24% of rods will be discarded
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 proportion of rods will be discarded
Shorter than 24.85.
pvalue of Z when X = 24.85
has a pvalue of 0.0162
Longer than 25.15
1 subtracted by the pvalue of Z when X = 25.15
has a pvalue of 0.9838
1 - 0.9838 = 0.0162
2*0.0162 = 0.0324
3.24% of rods will be discarded