I'm having so difficult with part b and c. For part b I thought the answer was -0.20 however it marks it incorrect so I also need help with rounding when the decimal has a 9 in that second or third place with a number 5or greater right behind it. Because I'm not getting the correct rounding out answer it wants.

Recall that Benford's Law claims that numbers chosen from very large data files tend to have "1" as the first nonzero digit disproportionately often. In fact, research has shown that if you randomly draw a number from a very large data file, the probability of getting a number with "1" as the leading digit is about 0.301. Now suppose you are an auditor for a very large corporation. The revenue report Involves millions of numbers in a large computer file. Let us say you took a random sample of n = 223 numerical entries from the file and r = 51 of the entries had a first nonzero digit of 1. Let p represent the population proportion of all numbers in the corporate file that have a first nonzero digit of 1. (1) Test the claim that p is less than 0.301. Use a = 0.10. USE SALT (a) What is the level of significance? 0.10 State the null and alternate hypotheses. Ho: p = 0.301; Hlp > 0.301 O Ho P = 0.301; H,: p 5 and nq > 5. The Student's t, since np 5 and ng > 5. What Is the value of the sample test statistic? (Round your answer to two decimal places.) -0.2 X (c) Find the P-value of the test statistic. (Round your answer to four decimal places.)