Question

30. The data represents a sample of the number of home fires started by candles for the past 7 years in a certain city. 5460 5900 6090 6310 7160 8480 9930 (Check yourself: the sample mean is 7047 and sample standard deviation is 1616) a. Identify the variable in this set up b. Identify an individual in this set up c. Find and interpret the 99% confidence interval for the mean number of home fires started by candles each year, assume normal distribution. d. Does the confidence interval, at 99% confidence level, provide sufficient evidence that the mean number of home fires started by candles in this city is greater than 5000 per year Write an appropriate inequality to justify your answer.

Answer 1