1. Research question: Are more than half of all ring-tailed lemurs left hand dominant? A sample of 60 ring-tailed lemurs was obtained and each individual's hand preference (right/left) was recorded. Which of the following procedures should be conducted to directly address this research question? C One sample proportion z test C Paired means t test C One sample mean t test 2. Research question: Is the average commute time for a Penn State University Park employee more than 15 minutes? Design: Technology was used to obtain a random sample of 50 Penn State University Park employees. Each selected employee was called and asked, "How many minutes does it usually take you to commute to work?" Which of the following procedures should be used to address this research question? C Single sample proportion z test Paired (dependent) means t test Single sample mean t test 3. What t* multiplier should be used to construct a 99% confidence interval with 300 degrees of freedom? Round your answer to 3 decimal places. 4. In a random sample of 30 engineering students at one university, 23 were men and 7 were not men. We want to construct a 95% confidence interval to estimate the proportion of all engineering students at this university who are men. Is it appropriate to use the normal approximation method to construct this confidence interval? Yes, it is appropriate to use the normal approximation method No, it is not appropriate to use the normal approximation method