Let X be a random variable corresponding to the number of trials k needed to soccertimes. Suppose the probability of success for each trial ispand thateach of the trials are independent.1. If the number of trials needed isk, then we must succeed on the kth trial. How many possible ways can we arrange the previousr−1 successes

If angle 2=3x +1 and angle 3=2x +4what is angle 2

Wich statement could be used to explain why the function h(x)= x^3 has an inverse relation that is also a function

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.