Final answer:
The critical value with a 94 percent confidence is option C. 1.64.
Step-by-step explanation:
The critical value with a 94 percent confidence is option C. 1.64. To find the critical value, we look up the z-score from a standard normal distribution table. At a 94 percent confidence level, we want 47 percent of the probability in each tail, which means we need to find the z-score that corresponds to a cumulative probability of 0.47. The closest value to the z-score is 1.64, so option C is the correct answer.