Since 19 is 76% of 25, we can assume that 76% of the people in the restaurant like the new menu. 76% of 227 is roughly 173. So about 173 people liked the menu that day. Hope this helps :)
2kg is equal to 2000g so the ratio is 65g:2000g and when simplified it will equal 13g:400g
hope this helps!!
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.