The Sydney Airport Commission set a performance target of 24 minutes for the time taken for passengers to claim their luggage at domestic terminals. In order to monitor performance, a study was conducted by taking a random sample of 200 passengers disembarking from Sydney airport. If the study found a p-value of 0.5 what was the sample mean time taken by passengers to claim their luggage? (Your answer should be correct to one decimal place.)

A company decided to test the hypothesis that the average time a company’s employees are spending to check their private e-mails at work is more than 9 minutes. A random sample of 50 employees were selected and they averaged 9.6 minutes. It is believed that the population standard deviation is 2.5 minutes. The α is set to 0.05. The p-value for this hypothesis test would be __________.

A study conducted by a technology company showed that the mean time spent per day browsing the video streaming service Netflix for something to watch was 20.6 minutes. Assume the standard deviation is =σ8. Suppose a simple random sample of 102 visits taken this year has a sample mean of =x19.6 minutes. A social scientist is interested to know whether the mean time browsing Netflix has decreased. Use the =α0.05 level of significance and the P-value method with the TI-84 Plus calculator.Part: 0 / 50 of 5 Parts CompletePart 1 of 5(a) State the appropriate null and alternate hypotheses.H0: 20.6H1: 20.6

Suppose that past history shows that 20% of Sydney trains are late. A sample of 12 trains is selected for an experiment.The probability that at most 4 trains is late is  Question 12Select one:a.0.800b. 0.133c. 0.587d.  0.928

The manager of a grocery store has taken a random sample of 100 customers to determine whether or not the mean waiting time of all customers is significantly more than 3 minutes. She observes that the average length of time it took the customers in the sample to check out was 3.1 minutes. The population standard deviation is known to be 0.5 minutes.

Researchers simulated boarding times for airline passengers using the normal distribution. They created different statistical models by varying the boarding strategies used, the amount of luggage passengers had, the capacity of the plane, how full the flight was, and the layout of the seats on the plane. One of the normal distribution models used for boarding times had a mean of 6.9 minutes and a standard deviation of 1.5 minutes. Use the normal distribution explorer app in our course book (under the Tools section) to answer the following questions. There may be some slight differences in answers between the tool and this quiz, so choose the answers closest to what the tool provides. Using the normal distribution model defined above: the middle 95% of boarding times are modelled to be between around [ Select ] and [ Select ] minutes. A boarding time of 8 minutes would be [ Select ] , as it has a [ Select ] tail proportion of around [ Select ] . Another boarding time of 5.3 minutes would be [ Select ] unusual than the first boarding time of 8, as its tail proportion is [ Select ] . If the model was changed, and the standard deviation was bigger, the middle 95% of boarding times under this model would become a [ Select ] interval.