【单选题】The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier. If 1,000 calls were randomly sampled...
【单选题】The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier. If 100 calls were randomly sampled, ...
【单选题】The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier. If 10 calls lasted 30 minutes or mor...