1.Using the same TrafficFlow dataset as in the previous problem, make new bootstrap distribution to estimate the population mean using 1600 samples.

a.From this bootstrap distribution count "by hand" how many dots to "go in" on each end to compute a 98% confidence interval for the parameter.How many dots will you count in on each side?Show your work. (This work is very important!)

b.When you count in that many dots, what values do you obtain for the endpoints of that interval:

Left endpoint: __________Right endpoint: _________

c.For this same bootstrap distribution, have StatKey choose the endpoints for you.What values does StatKey give you?

Left endpoint: __________Right endpoint: _________

2.Use the same TrafficFlow dataset as in the previous problem,Form a bootstrap distribution to estimate the population median.Use several thousand samples.(You'll need to use the dropdown menu where it currently says "Mean" to change to "Median.")

a.Does it meet the conditions needed to use it to form a 99% confidence interval for the population median?Circle one:YesNo

b.Give a reason for your answer.

c.Describe the important features of the graph of this bootstrapdistribution that are relevant to your answer to part b.

Dataset

Timed Flexible Difference 88 45 43 90 46 441 91 45 46 99 51 48 101 48 53 101 48 53 8 101 48 53 9 105 50 55 10 138 42 96 11 138 39 99 12 141 44 97! 13 99 38 61 14 99 40 59 15 99 41 58 16 100 41 59 17 101 42 59 18 101 43 581 19 101 43 58 20 102 45 57 21 102 44 58 22 106 44 621 23 107 45 62 24 111 44 671