(d) Would it be unusual for a random sample at 300 adults to result in 272 or fewer who do not own a credit card? Why? Select the correct choice below and ll in the answer box to complete your choice. (Round to four decimal places as needed.) A' The result is not unusual because the probability that .3 is less than or equal to the sample proportion is -, which is greater than 5%. O 5- The result is not unusual because the probability that .3 is less than or equal to the sample proportion is , which is less than 5%. O C. The result is unusual because the probability that .3 is less than or equal to the sample proportion is ,which is greater than 5%. O D- The result is unusual because the probability that .3 is less than or equal to the sample proportion is , which is less than 5%. Determine the standard deviation of the sampling distribution of B. 6i; = 0.017 (Round to three decimal places as needed.) (b) What is the probability that in a random sample of 800 adults, more than 39% do not own a credit card? The probability is 0.0392 . (Round to four decimal places as needed.) Interpret this probability. If 100 different random samples of 800 adults were obtained, one would expect 4 to result in more than 39% not owning a credit card. (Round to the nearest integer as needed.) (c) What is the probability that in a random sample of 800 adults, between 34% and 39% do not own a credit card? The probability is 0.8422 . (Round to four decimal places as needed.)