2.2222... can be shown as the fraction
Answer:
Replacement time of 10.064 years.
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:
Find the replacement time that separates the top 18% from the bottom 82%.
This is the value of X when Z has a pvalue of 0.82. So it is X when Z = 0.915.
Replacement time of 10.064 years.
1. 19.6
2. 30.4
3. 0.486
4. 56.4
5. 90.2
6. 54
7. 1.19
8. 212
Answer:
The annual interest he receives is $25000
Step-by-step explanation:
We are given
Mr. Gardener has $300,000 in a deposit account
so,
P=300000
receives 8 1 3 % interest annually
so, r=8 1/3 %
%
time =1 year
so, t=1
now, we can use interest formula
now, we can plug values
now, we can simplify it
So,
The annual interest he receives is $25000
Answer:
15.24 square meters
Step-by-step explanation:
Signal range of baby monitor is 50 meter radius.
The baby monitor will therefore cover an entire area of 50 meter radius.
Formula for finding the area of a circle is = π r 2 = π X r X r
Meaning: π = 3.142, r = radius of signal monitor
Therefore Area of circle = Square meters of coverage of baby monitor = 3.142 X 50 meters X 50 meters = 157.14 m2 (157.14 meters squared)
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