Question
What are the measures recommendedby statisticians to minimize the chances of: A. Type-1 error?2 B. Type-2 error?2 Suppose that a recent article stated that the
What are the measures recommendedby statisticians to minimize the chances
of:
A. Type-1 error?2
B. Type-2 error?2
Suppose that a recent article stated that the mean time spent in jail by
a first-time convicted burglar is 2.5 years. A study was then done to
see if the mean time has increased in the new century. A random
sample of 36 first-time convicted burglars in a recent year was picked.
The mean length of time in jail from the survey was more than 2.5
Years (assume 3 years) with a standard deviation of 1.8 years. You
were conducting a hypothesis test to determine if the mean length of
jail time has increased.
(i) Write the null hypothesis and1
H0: 2.5 years
(ii) Write the alternative hypotheses.1
Alternativehypothesis:H1: >2.5years(Alsocalled Ha)
(iii) Test the hypothesis assuming the alpha value = 0.054
There is sufficient statistical evidence, at 0.05 significance level, to affirm that:The mean length of jail time has increased
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