Test the claim that the average weight of a new SUV is 1,940 kg, if a sample of 320 vehicle weights results in a sample mean of 1,933 kg, with a standard deviation of 62 kg. Use a 2% level of significance.

Standard Normal Distribution Table

a. Calculate the test statistic.

z=

Round to two decimal places if necessary

b. Determine the critical value(s) for the hypothesis test.

• +

Round to two decimal places if necessary

c. Conclude whether to reject the null hypothesis or not based on the test statistic.

Reject

Fail to Reject