Confidence interval for the mean number of apples
A study of 35 apple trees showed that the average number of apples per tree was 525. The standard deviation of the population is 100. Which of the following is the 90% confidence interval for the mean number of apples per tree for all trees?
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An analyst from an energy research institute in California wishes to precisely estimate a 99% confidence interval of the average price of unleaded gasoline in the state.
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What is the kinetic energy of the cart at the end of the 1.2m motion? Show your calculations and give units.
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