Math 534 homework quiz Study guides, Class notes & Summaries

1. Question: A consumer protection agency wants to study gas prices at gas stations in the state. It takes a sample of 50 gas stations. The sample mean is $2.35 with a standard deviation of $0.12. Construct a 99% confidence interval to estimate the population mean. 2. Question: A consumer protection agency wants to study gas prices at gas stations in the state. It takes a sample of 50 gas stations. The sample mean is $2.35. The population standard deviation is known to be $0.10. Construct a 99%...

1. Question: A consumer protection agency wants to study gas prices at gas stations in the state. It takes a sample of 50 gas stations. The sample mean is $2.35 with a standard deviation of $0.12. Construct a 99% confidence interval to estimate the population mean. 2. Question: A consumer protection agency wants to study gas prices at gas stations in the state. It takes a sample of 50 gas stations. The sample mean is $2.35. The population standard deviation is known to be $0.10. Construct a 99%...

1. Question: Is each item below an example of descriptive or inferential statistics? 2. Question: In each case, identify the type of data (or level of data): 3. Question: For the following frequency distribution: 4. Question: Assuming that the dataset 17, 15, 3, 22, 11, 7, 9 is a sample. 5. Question: The amount of time it takes a person to get ready for work has a bell shaped distribution. The average is 45 minutes and the standard deviation is 10 minutes. 6. Question: The range of a given ...

1. Question: A random sample of 100 selected from a population with a standard deviation of 10 yielded a mean = 225. The mean and the standard deviation of the distribution of the sample means are __________. 2. Question: Suppose a random sample of 49 is selected from a population of size N = 500 with a standard deviation of 14. If the sample mean is 125, the 99% confidence interval to estimate the population mean is between ____________. 3. Question: A manufacturer wants to purchase a certain...

1. Question: True/False. 2.13 in valid probability. 2. Question: True/False. The union of two events is the probability of both events occurring 3. Question: Determine if each variable below is discrete or continuous: 4. Question: Given: We have a sample space S with several events defined on it. S={2, 4, 6, 7, 9, 12}. And the events are X={2, 6, 7} and Y={4, 6, 12} 5. Question: Consider the following probability of distribution of number of people we are likely to find waiting in line at a ...

1. Question: True/False. 2.13 in valid probability. 2. Question: True/False. The union of two events is the probability of both events occurring 3. Question: Determine if each variable below is discrete or continuous: 4. Question: Given: We have a sample space S with several events defined on it. S={2, 4, 6, 7, 9, 12}. And the events are X={2, 6, 7} and Y={4, 6, 12} 5. Question: Consider the following probability of distribution of number of people we are likely to find waiting in line at a ...

1. Question: True/False. 2.13 in valid probability. 2. Question: True/False. The union of two events is the probability of both events occurring 3. Question: Determine if each variable below is discrete or continuous: 4. Question: Given: We have a sample space S with several events defined on it. S={2, 4, 6, 7, 9, 12}. And the events are X={2, 6, 7} and Y={4, 6, 12} 5. Question: Consider the following probability of distribution of number of people we are likely to find waiting in line at a ...