A sports-and-exercise shop sampled its customer base one morning and asked 8 customers their age. Their responses are shown below. 24, 24, 25, 26, 28, 31, 36, 45 Which interval estimates the mean age of customers with a margin of error of 1.8? 25.2<μ<28.825.2<μ<28.8 26.1<μ<27.926.1<μ<27.9 28.1<μ<31.728.1<μ<31.7 29.0<μ<30.8
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 sports-and-exercise shop sampled its customer base one morning and asked 8 customers their age. Their responses are shown below.
24, 24, 25, 26, 28, 31, 36, 45
Which
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25.2<μ<28.825.2<μ<28.8 |
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26.1<μ<27.926.1<μ<27.9 |
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28.1<μ<31.728.1<μ<31.7 |
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29.0<μ<30.8 |
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