40% of a class are male. 25% of the males ride a bike to university, while only 10% of the females ride a bike to university. Consider a person randomly selected from the class. What is the probability they ride a bike to university?

If X is binomial with n = 8 and p =0.64, what is P(2 X 4)?Give your answer to 4decimal places.

If X is binomial with parameters n=16 and p=0.45,what is P(X <9)?Give your answer to four decimal places

If X ~ Bin(31,0.6), what is the standard deviationof X?Enter your answer to 2dp

If X ~ N(5.7,1.4²), what is P(X >6.2)?Give your answer to four decimal places.

If X ~ N(13,6²), what is P(X<10)?Giveyour answer to four decimal places.

If X is normal with mean 51 and standard deviation 20,what is P(70

If X is normal with mean 10.7 and standard deviation 4.2, what is the 15th percentile of X?Give your answer to 1decimal place

If X is normal with mean 12and standard deviation 6,what is the upper quartile of X?Give your answer to one decimal place

If X has mean 5.4 and standard deviation 1.8, what is P(X > 8)