Question: The manufacturer of electronic components needs to inform its buyers
The manufacturer of electronic components needs to inform its buyers of the proportion of defective components in its shipments. The company has been stating that the percentage of defectives is 12%. The company wants to test whether the proportion of all components that are defective is as claimed. A random sample of 100 items indicates 17 defectives. Use α = 0.05 to test the hypothesis that the percentage of defective components is 12%.
Answer to relevant QuestionsAccording to BusinessWeek, the average market value of a biotech company is less than $250 million. Suppose that this indeed is the alternative hypothesis you want to prove. A sample of 30 firms reveals an average of $235 ...According to Money, the average amount of money that a typical person in the United States would need to make him or her feel rich is $1.5 million. A researcher wants to test this claim. A random sample of 100 people in the ...An ad for flights to Palm Springs, California, claims that "the average temperature (in Fahrenheit) on Christmas Day in Palm Springs is 56º." Suppose you think this ad exaggerates the temperature upwards, and you look at a ...A large manufacturing firm believes that its market share is 45%. From time to time, a statistical hypothesis test is carried out to check whether the assertion is true. The test consists of gathering a random sample of 500 ...Corporate women are still struggling to break into senior management ranks, according to a study of senior corporate executives by Korn/Ferry International, New York recruiter. Of 1,362 top executives surveyed by the firm, ...
Post your question