A National Trend Predicts That Women Will Account for Half

question 206

Short Answer

A national trend predicts that women will account for half of all business travelers in the next 3 years. To attract these women business travelers, hotels are providing more amenities that women particularly like. A recent survey of American hotels found that 70% offer hairdryers in the bathrooms. Consider a random and independent sample of 20 hotels. Find the probability that at least 9 of the hotels in the sample do not offer hairdryers in the bathrooms.

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Definitions:

Gastrin

Hormone secreted in the mucosa of the stomach and duodenum that stimulates the secretion of hydrochloric acid by the parietal cells of the gastric glands.

Gastric Secretion

The process of producing and releasing fluids containing hydrochloric acid and digestive enzymes by the stomach lining.

Chyme

The fluid mixture of partially digested food and digestive secretions that is formed in the stomach and intestine during digestion.

Gastric Juices

A mixture of mucus, hydrochloric acid, and digestive enzymes produced by the stomach lining to aid in the digestion of food.