Test the claim that the average weight of a new SUV is 1,940 kg, if a sample of 292 vehicle weights results in a sample mean of 1,931 kg, with a standard deviation of 62.3 kg. Use a 20% level of significance.
Standard Normal Distribution Table
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a. Calculate the test statistic.
z=
Round to two decimal places if necessary
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b. Determine the critical value(s) for the hypothesis test.
• +
Round to two decimal places if necessary
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c. Conclude whether to reject the null hypothesis or not based on the test statistic.
Reject
Fail to Reject