People in the aerospace industry conducted a pilot study to determine the relationship between the weight and cost of a major object being sent into space. Determine the number of observations needed to be 96% confident thatthe estimate of the averagecost is within$8 of the overall mean cost. Note: Assume that the pilot study standard deviation is a good estimate of the population standard deviation, that an appropriate value from the Z-table can be used, and that hand calculations are used to find the answer.

Attached here is data in excel.

Home Insert Draw Page Layout Formulas Data Review Connections Properties From From New Database Refresh HTML Text Query Edit Links Stocks Geography All E8 fx A B 1 Weight Cost YOUAWN 1.897 53.6 3.019 184.9 0.453 6.4 0.988 23.5 1.058 33.4 2.1 110.4 2.387 104.6 10 12