A researcher wishes to estimate the average height of buildings in Muscat. He wants to be 99% confident that the estimate is accurate within 2.2 meter. From a previous study, it is observed that the standard deviation of the height of buildings measured was 5.1 meter. What should be his sample size to do the estimate? [Given zg = 2.58] O 36 O 37 O 35 O None of these
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
![A researcher wishes to estimate the average height of buildings in Muscat. He wants to be 99%
confident that the estimate is accurate within 2.2 meter. From a previous study, it is observed that
the standard deviation of the height of buildings measured was 5.1 meter. What should be his
sample size to do the estimate? [Given zg = 2.58]
O 36
O 37
O 35
O None of these](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa7c5b4af-605d-4865-9256-e852a8e8b941%2F950deeb7-20aa-4b9a-b308-97d3aa5aa4fb%2Fjb953d_processed.jpeg&w=3840&q=75)
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