Final answer:
To determine if New Yorkers sleep less than 8 hours a night on average, a hypothesis test needs to be performed using the given data. Without the actual data, it is not possible to determine if there is strong evidence to support the claim.
Step-by-step explanation:
To determine if these data provide strong evidence that New Yorkers sleep less than 8 hours a night on average, we would need to perform a hypothesis test. Let's assume the null hypothesis is that New Yorkers sleep 8 hours or more on average, and the alternative hypothesis is that they sleep less than 8 hours on average.
We can use the given data to calculate the sample mean and standard deviation. If the sample mean is significantly less than 8, we can reject the null hypothesis and conclude that New Yorkers sleep less than 8 hours on average.
However, without the actual data, it is not possible to perform the hypothesis test and determine if there is strong evidence to support the claim.