Directions: In each problem, underline the population standard deviation/sample standard deviation and circle the number of samples.

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Activity '- Chock It Out! Directions: Read and analyze each problem. On the table below, put a check on the columns of the criteria that correspond to the given problem. 1. Uber company.r claims that the mean time to rent a car on their app is 60 seconds with a standard deviation of 30 seconds. A random sample of 36 customers attempted to rent a car on the app. The mean time of renling was 75 seconds. Is this enough evidence to contradict the company's claim? 2. The wailing time to be seated at the restaurant has population standard devialion of 1G minutes. An expensive restaurant claims that the average waiting lime for dinner is approximately 1 hour, but we suspect that this claim is inated to make the restaurant appear more exclusive and successful. A random sample of 30 customers yielded a sample average wailing lime of 5D minutes. l-___-- Activity : Mark My Numbers! 1. Mabunga Elementary School has 1,000 students. The principal of the school thinks that the average IQ of students at Mabunga is at least 110. To prove her point, she administers an IQ test to 20 randomly selected students. Among the sampled students, the average IQ is 108 with a standard deviation of 10. 2. A new energy-efficient lawn mower engine was developed by a well-known inventor. He claims that the engine will run continuously for 5 hours on a single gallon of regular gasoline. From his stock of 2,000 engines, the inventor selects a simple random sample of 50 engines for testing. The engines run for an average of 295 minutes with a standard deviation of 20 minutes