A new teaching technique for elementary school is created. Schools want to know if the technique will increase the average test score. We know the standard deviation for the previous test scores, and will be the same for the students who get the new teaching.
What population parameter are you testing?
What calculator program will be used for the test?
What assumption needs to be met to conduct the test?
What distribution is used?
What calculator function will be used to get the critical values?
A question is raised about how much salt is in the average frozen food. A sample of frozen food is collected and a confidence interval for the average amount of salt per serving needs to be constructed. The sample is the only information you have about salt in food.
What population parameter are you estimating?
What calculator program will be used for the estimate?
What assumption needs to be met to conduct the estimate?
What distribution is used?
What calculator function will be used to get the critical values?
The government wants to know how many people are now covered by employer-paid health benefits. A sample of employees is taken and a confidence interval for the faction of the population so covered needs to be constructed.
What population parameter are you estimating?
What calculator program will be used for the estimate?
What assumption needs to be met to conduct the estimate?
What distribution is used?
What calculator function will be used to get the critical values?
A person claims that more than 60% of teenage boys spend more than 20 hours a week playing video games. A survey is taken to see what percentage of teenage boys play more than 20 hours a week of video game. You are going to test to see if it’s more than 60%
What population parameter are you testing?
What calculator program will be used for the test?
What assumption needs to be met to conduct the test?
What distribution is used?
What calculator function will be used to get the critical values?
A company is concerned that the machines that fills boxes with breakfast cereal has become more erratic. The company wants to test if the standard deviation of the amount of cereal dispensed by the machine has increased.
What population parameter are you testing?
What calculator program will be used for the test?
What assumption needs to be met to conduct the test?
What distribution is used?
What calculator function will be used to get the critical values?
A bank official wants to know if the average credit score of consumers who took out car loans is below 720. A sample of customer is collected. The survey sample is the only information you have.
What population parameter are you testing?
What calculator program will be used for the test?
What assumption needs to be met to conduct the test?
What distribution is used?
What calculator function will be used to get the critical values?
Data is collected and a regression is run to see if the variable “quantity of aspirin consumed” is negatively correlated with “heart attacks”.
What population parameter are you testing?
What calculator program will be used for the test?
What assumption needs to be met to conduct the test?
What distribution is used?
What calculator function will be used to get the critical values?