Answer:
The correct answer is OB. t0 = 1.306; t > 1.306.
For a right-tailed t-test with a level of significance of 0.1 and a sample size of 35, we need to find the critical value and rejection region.
To find the critical value, we need to look up the t-distribution table with (n-1) degrees of freedom. In this case, the degrees of freedom is 35-1 = 34.
Looking up the critical value for a right-tailed test with a significance level of 0.1 and 34 degrees of freedom, we find that the critical value is approximately 1.306.
Therefore, the critical value is t0 = 1.306.
The rejection region for a right-tailed test is t > t0. So, the rejection region for this test is t > 1.306.
Hence, the correct answer is OB. t0 = 1.306; t > 1.306.