The following proportion could be used to change from feet to which measure?
1 answer:
You might be interested in
Answer:
340
Step-by-step explanation:
The first step is finding the percentage of those who fail within 19 months.
Problems of normally distributed samples 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.
In this problem, we have that:
The proportion is the pvalue of Z when X = 19. So
has a pvalue of 0.6808.
Jolt is expected to replace 0.6808 of the connectors sold. Out of 500, that is, on average, 0.6808*500 = 340.
Jolt expects to replace, on average, 340 of the connectors sold.
<h2>The reciprocals of the fraction 
= 
or 2.</h2>
Step-by-step explanation:
We have,
To find, the reciprocals of the fraction = ?
∴
Dividing numerator and denominator by 37, we get
=
= or,
We know that,
The reciprocals of the fraction
The reciprocals of the fraction =
or
= or 2
Thus, the reciprocals of the fraction =
or 2.