Question is in the image attached .Take a picture of your working if you can.Thank you.

2. A manufacturer of flashlight batteries took a sample of thirteen batteries and used them until they were drained. The numbers of hours they were used until failure were: 342 426 317 545 264 451 1049 631 512 266 492 562 298 (a) Compute the mean, median, mode, midrange and midhinge. Looking at the distribution of times to failure, which measures of location do you think are best and which are worst?. Give your reason. (b) In what ways would this information be useful to the manufacturer? (c) Calculate the range, variance and standard deviation. (d) For many sets of data the range is about six times the standard deviation. Is this true here? If not why do you think it is not? (e) Using the information above, what would you advise if the manufacturer wanted to be able to say in advertisements that these batteries should last 400 hours? (f) Suppose that the first value was 1342 instead of 342. Repeat (a) using this value. Commend on the difference in the results. (g) Do (c) to (e) with the first value equal to 1342 instead of 342. Commend on the difference in the results. (h) How would you describe the shape of the data set if the first value were 342? (i) How would you describe the shape of the data set if the first value were 1342