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Time left 1:41:1 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? 190 O 160 O 185 O 179 Which value of the correlation coefficient r indicates a stronger correlation than 0 -0.75 0 0.60 -0.70 O 0.65 A random sample of size [Math Error] is taken from a normal population with variance (9), how large must the sample size ([Math Error] ) be so that the length of 98% confidence interval for the population mean is 3 O 30 o search O