Question
*** NEED calculations and equations*** NEED SOON!!!! In 1990, 5.8% of all job applicants failed a drug test given as a condition of employment. Since
*** NEED calculations and equations*** NEED SOON!!!! In 1990, 5.8% of all job applicants failed a drug test given as a condition of employment. Since then these tests have become widely published to who might choose to apply for these positions. A group of researchers claim that the publication of drug testing has resulted in the current percentage of those who fail a drug test to be lower than 5.8%. Researchers do a random sample and find that 80 persons test positive out of the 1,400 sampled. Test the researchers claim at the .05 level of significance. Be sure to state the claim and the hypotheses. What is the critical Z score? What is your calculated z score? What do you conclude about the null hypothesis? What do you conclude about the claim?
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