The hypothesis test ?0:?≥67 ?1:?<67 is to be carried out for a population where ?σ is known. A random sample of 35 yields x¯=65.1 and the test statistic is found to be ?=−0.986013297183272. What is the standard deviation of the population

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The hypothesis test

?0:?≥67 ?1:?<67
is to be carried out for a population where ?σ is known. A random sample of 35 yields x¯=65.1 and the test statistic is found to be ?=−0.986013297183272. What is the standard deviation of the population?

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