Questions from Business Statistics


Q: Thirteen overweight women volunteered for a study to determine whether eating specially

Thirteen overweight women volunteered for a study to determine whether eating specially prepared crackers before a meal could help them lose weight. The subjects were randomly assigned to eat crackers...

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Q: There is some indication in medical literature that doctors may have become

There is some indication in medical literature that doctors may have become more aggressive in inducing labor or doing preterm cesarean sections when a woman is carrying twins. Records at a large hosp...

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Q: Students in two basic Spanish classes were required to learn 50 new

Students in two basic Spanish classes were required to learn 50 new vocabulary words. One group of 45 students received the list on Monday and studied the words all week. Statistics summarizing this g...

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Q: Anna, a language major, took final exams in both French

Anna, a language major, took final exams in both French and Spanish and scored 83 on each. Her roommate Megan, also taking both courses, scored 77 on the French exam and 95 on the Spanish exam. Overal...

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Q: Fitting someone for a hearing aid requires assessing the patient hearing ability

Fitting someone for a hearing aid requires assessing the patient hearing ability. In one method of assessment, the patient listens to a tape of 50 English words. The tape is played at low volume, and...

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Q: Who reads the newspaper more, men or women? Eurostat,

Who reads the newspaper more, men or women? Eurostat, an agency of the European Union (EU), conducts surveys on several aspects of daily life in EU countries. Recently, the agency asked samples of 100...

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Q: It estimated that 50,000 pregnant women worldwide die each year

It estimated that 50,000 pregnant women worldwide die each year of eclampsia, a condition involving elevated blood pressure and seizures. A research team from 175 hospitals in 33 countries investigate...

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Q: Refer again to the research summarized in Exercise R6.6.

Refer again to the research summarized in Exercise R6.6. Is there any evidence that when eclampsia does occur, the magnesium sulfide treatment may help prevent the woman death? 1. Write an appropriate...

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Q: A recent study of perfect pitch tested 2700 students in American music

A recent study of perfect pitch tested 2700 students in American music conservatories. It found that 7% of non-Asian and 32% of Asian students have perfect pitch. A test of the difference in proportio...

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Q: A corporation with a fleet of vehicles wanted to test the cost

A corporation with a fleet of vehicles wanted to test the cost-effectiveness of using Motor Silk oil additive. For the study, 6100 delivery and passenger vehicles were tested for the same 3-month peri...

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