Hello can you please help me with the two problems shown below?

Question 8 (3 points) Differences between observed values and expected values indicate that ______ . 0 there may be a relationship between the variables 0 the sample size needs to be larger 0 the expected values are too high 0 there is a calculation error Question 9 (1 point) The success-failure condition states that there must be at least 5 successes and 5 failures in the sample