please assist me in finding the solution to this problem I had a lot of trouble understanding it!
Consider the following hypotheses: Ho: In a 142HA: In 4! 142 A sample of 72 observations results In a sample mean of 137. The population standard deviation is known to be 21. {You may find Ituseful to reference the appropriate table: 2 table or t ta hie} a-‘l. Calculate the value of the test statistic. {Negative value should be Indicated by a minus sign. Round Intermediate calculations toat least 4 decimal places and final answer to 2 decimal places.) ——
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