lDK
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Answer:
Integers are always closed under subtraction, addition and multiplication, not division though. Hope this helped! :D
Step-by-step explanation:
Answer:
A warranty of 4.32 years should be provided.
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 question, we have that:
![\mu = 5.8, \sigma = 0.9](https://tex.z-dn.net/?f=%5Cmu%20%3D%205.8%2C%20%5Csigma%20%3D%200.9)
What warranty should be provided so that the company is replacing at most 5% of their toasters sold?
The warranty should be the 5th percentile, which is X when Z has a pvalue of 0.05. So it is X when Z = -1.645.
![X - 5.8 = -1.645*0.9](https://tex.z-dn.net/?f=X%20-%205.8%20%3D%20-1.645%2A0.9)
![X = 4.32](https://tex.z-dn.net/?f=X%20%3D%204.32)
A warranty of 4.32 years should be provided.
A mother decided to record the height of her daughter hair she notices that her kid hair grew about 15 inches every year. however, she would cut off 3 inches because it was damaged. to figure out how much hair her daughter had over the years she used the equation y=15x-3
Answer:
A=3.14(9.4 squared)9.4 squared= 88.363.14(88.36)= 277.4504277.4504 is close to 278 The answer is D.
Hope this helps!