An automobile manufacturer claims that its van has a 27.6 miles/gallon (mpg) rating. an independent testing firm has been contracted to test the mpg for this van since it is believed that the van has an incorrect manufacturer's mpg rating. after testing 210 vans, they found a mean mpg of 28.0. assume the standard deviation is known to be 2.3. a level of significance of 0.05 will be used. find the value of the test statistic. round your answer to 2 decimal places.

2.52

Step-by-step explanation:

An automobile manufacturer claims that its van has a 27.6 miles/gallon (MPG)

So,

n = 210 vans

x = 28

Formula of test statistic =

Hence the value of the test statistic is 2.52

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints

answer: haha (: i’ll go see what it is

step-by-step explanation: