After how many places the decimal expansion of 13497/1250 will terminate
2 answers:
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Answer:
The correct option is;
C) 6554
Step-by-step explanation:
The given data are;
Day, Amount of change in Bacteria
1, 2
2, -8
3, 32
4, -128
Given that the data follows a geometric sequence, we have;
The first term of the series = 2, the common ratio = -4, the sum of a geometric progression is given by the following formula;
Which gives;
Therefore, the correct option is C) 6554.
The minimum sample size required to estimate the mean usage of water = 2225.07
What is Standard deviation?
In statistics, the standard deviation (SD, also represented by the Greek letter sigma σ or the Latin letter s) is a measure that is used to quantify the amount of variation or dispersion of a set of data values.
We can find the minimum sample size required to estimate the mean usage of water as shown below:
Standard deviation
Margin of error E=0.15
Critical value for 95% confidence interval = 1.96
Required minimum sample size:
=2225.07
Hence, the minimum sample size required to estimate the mean usage of water = 2225.07
Learn more about Standard deviation here:
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