Step one is asked in the image which is to answer the hypothesis. And step 2 is asking to enter the value of the Z test statistics. Step 3 is asking if this is a one tailed or 2 tailed test. Step 4 is asking to enter the decision rule if we reject H0 if z

An automobile manufacturer claims that their van has a 53.5 miles/gallon [MPG) rating. An independent testing firm has been contracted to test the MPG for this van. After testing 230 vans they found a mean MPG of 53.2. Assume the standard deviation is known to be 2.4. Is there sufficient evidence at the 0.1 level that the vans underperform the manufacturer's MPG rating? Step 1 of 5: Enter the hypotheses: Answer 1 Point Tables Keypad