-City planners are concerned if the mean lifetime of the most commonly planted trees in urban settings is more than 30 years. A sample of 42 recently fallen trees yielded a mean age of 30.7 years with standard deviation of 3.2 years. (a). 5% significance level. Using the above data, perform an appropriate hypothesis test at

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-City planners are concerned if the mean lifetime of the most commonly
planted trees in urban settings is more than 30 years. A sample of 42 recently fallen
trees yielded a mean age of 30.7 years with standard deviation of 3.2 years.
(a).
5% significance level.
Using the above data, perform an appropriate hypothesis test at
Transcribed Image Text:-City planners are concerned if the mean lifetime of the most commonly planted trees in urban settings is more than 30 years. A sample of 42 recently fallen trees yielded a mean age of 30.7 years with standard deviation of 3.2 years. (a). 5% significance level. Using the above data, perform an appropriate hypothesis test at
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