1. A company, which makes battery-operated cars, claims that its products have a mean life span of ____ years with a standard deviation of ____ years. If a random sample of 40 toy cars was tested and found to have a life mean of only ____ years. Test if the sample is a representation of the population at _____ level of significance. Step 1: State the hypotheses. (if applicable) (insert picture of your answer here) Step 2: The level of significance, one/two-tailed test, degrees of freedom (if applicable) (insert picture of your answer here) Step 3: Statistical Test (if applicable) (insert picture of your answer here) Step 4: Computation (insert picture of your answer here) LINK: (If applicable, attach the link for the shortcut method here.) Step 5: Decision Rule (if applicable) (insert picture of your answer here) Step 6: Reject Ho or Failed to Reject Ho (if applicable) (insert picture of your answer here) Step 7: Conclusion (if applicable) (insert picture of your answer here) 2. A coffee shop relocates to Italy and wants to make sure that all lattes are consistent. They believe that each latte has an average of ___ oz of espresso. If this is not the case, they must increase or decrease the amount. They took a random sample of 10 lattes and the following are the ounces of espresso ____, ____, ____, ____,____, ____,____, ____,____, ____. Use alpha = ____. Step 1: State the hypotheses. (if applicable) (insert picture of your answer here) Step 2: The level of significance, one/two-tailed test, degrees of freedom (if applicable) (insert picture of your answer here) Step 3: Statistical Test (if applicable) (insert picture of your answer here) Step 4: Computation (insert picture of your answer here) LINK: (If applicable, attach the link for the shortcut method here.) Step 5: Decision Rule (if applicable) (insert picture of your answer here) Step 6: Reject Ho or Failed to Reject Ho (if applicable) (insert picture of your answer here) Step 7: Conclusion (if applicable) (insert picture of your answer here) 3. The school registrar estimates that the dropout rate of senior high schools in Cavite is ____ %. Last year, _____ freshmen from a random sample of ____ Cavite senior high school withdrew. At ____, is there enough evidence to reject the registrar's claim? Step 1: State the hypotheses. (if applicable) (insert picture of your answer here) Step 2: The level of significance, one/two-tailed test, degrees of freedom (if applicable) (insert picture of your answer here) Step 3: Statistical Test (if applicable) (insert picture of your answer here) Step 4: Computation (insert picture of your answer here) LINK: (If applicable, attach the link for the shortcut method here.) Step 5: Decision Rule (if applicable) (insert picture of your answer here) Step 6: Reject Ho or Failed to Reject Ho (if applicable) (insert picture of your answer here) Step 7: Conclusion (if applicable) (insert picture of your answer here