Please, just say which option it is

Student ID 1. Fuel Costs dataset contains a random sample of 25 fuel costs. We want to calculate the 95% confidence interval of the mean. Sample mean: 330.6., Standard deviation: 154.2., N=25 a) 58, 69 b) 80-95 c) 99-110 d) 267-394 2. Find the critical value ta/2 for a 90% confidence interval with a sample size of n=25. a) 1.714 b) 1.711 c) 1.318 d) 2.064 3. Growth of pine seedlings in two different substrates was measured. 7 samples from each substrate indicate mean values of 3.79 and 6.23 for substrate 1 and substrate 2, respectively. Standard deviations are 0.474 and 0.936 for substrate1 and substrate 2, respectively. c) 0.146 to 2.332 Construct a 90% confidence interval for the difference between the means. a) 1.734 to 3.146 b) 2.214 to 4.123 d) 3.134 to 5.312 n between two trees grown in two different regions indicate a standard deviation of 1.4m. There are