Mathematics, 19.11.2019 02:31 annaharmon693
An srs of 100 postal employees found that the average time these employees had worked for the postal service was = 7 years, with standard deviation s = 2 years. assume the distribution of the time the population of employees has worked for the postal service is approximately normal, with mean μ. are these data evidence that μ has changed from the value of 7.5 years of 20 years ago? to determine this, we test the hypotheses h0: μ = 7.5, ha: μ ≠ 7.5
Answers: 3
Mathematics, 21.06.2019 12:30, qxchung7310
Elijah and his sister went to the movies. they had $34 altogether and spent $9.50 per ticket. elijah and his sister bought the same snacks. write and solve an inequality fotlr the amount that each person spent on snacks. interpret the solition
Answers: 3
An srs of 100 postal employees found that the average time these employees had worked for the postal...
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