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

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

A National Trend Predicts That Women Will Account for Half