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Time left 1:42 The time it takes students to complete a MATH235 final exam is normally distributed with a mean of 160 minutes and standard deviation of 14.85 minutes. How much time should be allowed if we wish to ensure that 90% of the students can complete it? O 185 O 190 O 179 O 160 A population has mean 35 and standard deviation 7.5. A sample of size 25 is taken from this population. What is the probability that the sample mean is greater than 33.5? 0.1235 0 0.003 0 0.8413 0 0.15867 to search O W