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:
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.
A warranty of 4.32 years should be provided.
Y = -1/2x + 8
You can get this by first distributing the -1/2 to the parenthesis and then by adding 9 to both sides.
When a sale happens in a shop, you might take off 20%, 50%, etc. of the price of a product.
Answer:
Oof
Step-by-step explanation:
First, change the denominators cuz, math. Then just do the math. Why you asking me?