Can someone help me on this please?

Consider two independent random samples of sizes n1 = 10 and {12 = 14, taken from normally distributed populations, with sample standard deviations of s, = 4.6 and $2 = 4.2, respectively. a) What is spz, the estimate of the pooled variance? Round your response to at least 3 decimal places. b) What are the appropriate degrees of freedom for the t value