State whether below statement is either a True or a False st…

State whether below statement is either a True or a False statement. If it is false explain why. Please note that you can say something is true if it’s always true. Tensile strength tests were carried out on two different grades of wire rod resulting in the accompanying data.  Based on our “rule of thumb”, we can use the pooled estimate of the standard error. Grade Sample size Sample mean (Kg/mm2) Sample std.dev 1064 19 108 1.3 1078 15 124 1.6    

Accounts department of an airline company claims that 2 out…

Accounts department of an airline company claims that 2 out of 10 flights depart from a certain airport are delayed. Suppose you work for the company as a statistical consultant and want to see whether true proportion of delayed flights is different from what they claim. You randomly selected 120 flights and recorded their flight status. Out of 120 sampled flights, 18 flights were delayed. p-value of the test is