A study was designed to determine whether dogs can be trained to identify urine specimens from individuals with bladder cancer. Dogs were first trained to discriminate urine samples from patients with bladder cancer or with other conditions. After the training was completed, the dogs had to pick one of seven new urine specimens. Each time, only one of the seven urine specimens came from a patient with bladder cancer. Out of 54 trials, the dogs identified the correct urine specimen 22 times. Can we say at 5% level of significance that dogs are able to identify urine specimens from patients with bladder cancer? (b) The purpose of a study b