QUESTION 4 Consider the following hypotheses statement for the average range of an electric vehicle: Ho: μ =311.36 km, Ha:p #311.36 km. A sample consisting of 56 vehicles showed the sample average range of 291.28 km. Unfortunately the researchers did not know the standard deviation of the population, but the standard deviation in the sample appeared to be 35.07 years. What is the test statistic? Round your answer to 2 decimal places.

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