Given x is a normal distribution with mean of 2.9 and standard deviation of 0.45 find the x value representing 70th percentile

What is the answer to the question 5x+2x

You are saving to buy a bicycle; so far you save 55.00. the bicycle costs 199.00. you earn 9.00 per hour at your job. which inequality represents the possible number of h hours you need to work to buy the bicycle?

D. in a discrete probability distribution, the sum of the probabilities for the discrete variables will be > 1. true or false