1.Mr. Smith bought 16 oranges and Ms. Green bought 16 oranges in different stores picking oranges randomly. The mean weight of Mr. Smith's oranges isx= 300 grams and the mean weight of Ms. Green's oranges isx= 250 grams. Both groups of oranges show equal standard deviation, i.e. s= s= 48 grams. Is the difference of the mean weights of the oranges is statistically significant with sampling error= 5% (alpha). In the other words, can someone claim that the oranges of those stores have different average weight?