The average weight of 35 randomly selected compact automobiles was 2920 pounds. The sample standard deviation was 400 pounds. Find the following:

The point estimate = [ Select ] ["2920", "76.6", "400", "None of these answers"]

The 98% confidence interval of the population mean is [ Select ] ["2712 < mean < 3128", "2620 < mean < 3220", "2755 < mean < 3085", "None of these answers"]

The 98% confidence interval of the population mean if a sample of 61 automobiles is used instead of a sample of 35 is [ Select ] ["2520 < mean < 2840", "2755 < mean < 3085", "2798 < mean < 3042", "None of these answers"]