A newspaper article claims that the average annual salary for full-time female w

Question

A newspaper article claims that the average annual salary for full-time female workers without a high school diploma is $19,100. Assume that the population is approximately normal. An employment information service believes that the claim is incorrect. The employment service selects a random sample of 12 full-time female workers without a high school diploma and find their mean salary is $18,400 with a standard deviation of $1,250. At ? = 0.10, is there sufficient evidence to support that the average annual salary is significantly different from $19,100? State the null and alternative hypotheses for the test. Answer H0: ? = $19100, Ha: ? ? $19100 H0: ? ? $19100, Ha: ? > $19100 H0: ? ? $19100, Ha: ? < $19100 H0: ? ? $19100, Ha: ?= $19100 H0: ? > $19100, Ha: ? ? $19100

Explanation / Answer

Ho = $19100,Ha=$19600


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