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In order to monitor the ecological health of the Florida Everglades, various measurements are recorded at different times. The bottom temperatures are recorded at the Garfield Bight station and the mean of 30.4 C is obtained for 61 temperatures recorded on 61 different days. Assuming that the population standard deviation is 1.7 C
1. what is the point estimate for the pop mean of all temp.
2. which confidence interval would we likely use? Z or T?
3. construct and interpret a 95% confidence internal estimate of the pop mean of all such temps
4.construct and interpret a 90% confidence internal estimate of the pop mean of all such temps
5. how big of a sample would we need to take if we wanted to find a 00 percent confidence interval with margin of error of only 0.1 degrees celcius
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Suppose also that the mean score on test A is 85, and the standard deviation is 10; the mean score on test B is 90, and the standard deviation is 16; the scores on the two tests have a bivariate normal distribution; and the correlation of the two ..
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Compute the grouped data mean for this distribution. Use MINITAB and using the original scores, compute the raw-data mean. Use MINITAB.
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On average, 8% of the subscribers respond to the survey. Of the 8% who respond, an average of 53% say they will renew. Sample and Population.
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