An important feature of digital cameras is battery life, the number of shots that can be taken before the battery needs to be recharged. The le contains the battery 164.368 177.135 158.239 150.226 159.018 163.903 138.216 155.620 153.871 167.802 168.006 151.233 165.096 160.818 149.654 158.653 157.184 167.433 145.456 151.204 154.496 163.538 168.178 150.869 160.920 164.525 154.321 161.657 164.917 171.230 162.763 157.016 169.091 174.964 161.020 156.670 175.276 166.3 1 1 1 67.706 147.920 :1. Assuming that the population variances from both conditions are equal, is there evidence of a difference in the mean surface hardness between untreated and treated steel plates? (Use a = 0-05-) 1). Determine the pvalue in (a) and interpret its meaning