pls help me with these and double-check your work. I will also make sure we are both satisfied if I am satisfied. Please do.r best

Question Suppose that in a certain large population, the proportion of people that have blood type O is 0.31. If 8 people are randomly and independently selected from this population, what is the probability that one or two have blood type O? (Give your response to at least 3 decimal places. Give only your numeric response, and not any extra characters or symbols.)Question Suppose we sample 3 values from a continuous uniform distribution on the interval (19,100). What is the probability that all 3 values lie between 31.4 and 67.3? (Give your response to at least 3 decimal places. Give just the numeric response, and not any extra characters or symbols.) Your Answer:population, and found a sample mean of 374.3 and a sample standard deviation of 29.0. ' What is the appropriate lower endpoint of the 90% interval for mu? (e.g. If the interval is {3.712,9.674}. give 3.712 as your response.) (Give your response to at least 3 decimal places. Give only your numeric response, and no extra characters or symbols.)