Question

A manufacturer of automobile products has developed a new wax and is interested in comparing the new wax with their standard wax to determine if the new wax will protect a car for a longer period of time. In order to make a comparison, both wax are applied to five new cars respectively and exposed to the same environmental conditions. The results of the test are: Standard Wax New Wax ni = 5 n2 = 5 X1 = 86.80 hours of effectiveness X2 = 92.40 hours of effectiveness s1 = 2.88 hours S2 = 2.49 hours Then , the Sampling Distribution of the Difference Between Two Means is: Binomial b. Chi-Square C. Skewed d.t · Normal Distribution Distribution Distribution Distribution Distributic a. e.

Answer 1

Hure it is given that standard wax New wax h2-5 hs X = 92.40 x = 86.80 S = 2.83 S2 = 2.99 then the sampling distibution of the diffe renice Between two means will be t distribution ľ e option @ be correct