A lоcаl cоffee shоp is concerned whether their customers аre getting whаt they pay for. For a “medium” sized coffee, you’re supposed to get 10 ounces, but the amount varies slightly from cup to cup. A random sample of 20 cups was taken, which has a mean 9.85 and a standard deviation 0.19. The value of the test statistics is? State your value to 2 decimal points. e.g. 5.89