01/04/25

What is a confidence interval in Statistics?
Please explain, using an example, what a confidence interval is and how we would apply it to sample scenario.
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11/05/24

Normal Distribution
Suppose the heights of a certain type of tree is normally distributed with a mean of 10m and a standard deviation of 2ma) What is the probability a randomly chosen tree is between 9.6m and 10.2m?b)... more
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08/03/14

when 196 workers aged 18-25 were asked how many hours they worked in the previous week, the mean was 37.8 with a standard deviation of 13.3.
a. Identify the relevant and parameter variable a 2.  Identify the parameter. b. sate the null and null alternative hypothesis b 2. state the alternative hypothesis c. find the test statistic... more
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