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In: Statistics and Probability

5. You took a sample of 5 phones and tested their battery life. You got the...

5. You took a sample of 5 phones and tested their battery life. You got the following battery life (in months) 24, 35, 22, 27, 20. a- You want to test whether the variance in battery life is greater than 30 months squared? b- You conduct a new survey of phones, and among the 7 phones you survey this time, you report the following battery life. 36, 18, 25, 22, 31, 28, 40 You want to test whether the variance in this sample is greater than in your first survey. Use http://www.socr.ucla.edu/applets.dir/f_table.html Note this provides only the right tail, so make sure to build your F-Test accordingly with the largest value on the nominator.

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Expert Solution

null hypothesis is accepted in both cases.

orchestra answered 1 year ago
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