Please help me only if you really know how to solve it as I am stuck and I cannot solve these questions. Dont give me random answers please. You can use any software to solve it if it's easier ( we use R). If I am satisfied, i will also make sure you are satisfied too.

Link to textbook if needed with the content: https://drive.google.com/file/d/1ptM7Pzw8e364cZpwdQXU30GVhrQc1AZ7/view?usp=sharing

Questions:

Question Suppose we wish to test the null hypothesis that the means of two populations are equal. We decide to use the pooled-variance t procedure to carry out the test. We draw independent samples of 70 observations from each population, and find X1 = 11.9, X2 26.8, and SEUZ'l X2) 22.0. What is the value of the appropriate t statistic? (Give your numeric response to at least 3 decimal places. Give only the number, and not any additional characters or symbols. [If the value is negative, include the minus sign.}) Your Answer: \\ . Your Answer Question Suppose it has previously been claimed that the proportion of adults in a certain city that have a university degree is 0.54, and suppose we wish to carry out a test of the null hypothesis that this is the true proportion. In a random sample of 1100 adults in this city, 509 have a university degree. What is the value of the appropriate Z test statistic? (Give your numeric response to at least 3 decimal places. Give only your numeric response, and not any extra characters or symbols. If the value is negative, include the negative sign] Your Answer: \\ , Your