Which of the following tables shows a valid probability density function? Select all correct answers. Select all that apply:

x P(X=x)
0 14
1 12
2 18
3 18
x P(X=x)
0 35
1 15
2 −15
3 25
x P(X=x)
0 310
1 15
2 35
3 110
x P(X=x)
0 0.01
1 0.46
2 0.19
x P(X=x)
0 0.09
1 0.24
2 0.67
x P(X=x)
0 14
1 12
2 14

stew reads at the fastest rate of 265 words per minute.

step-by-step explanation:

it's a given that felicia reads at 260 word per minute and on connie's graph we can see that she reads 200 words per minute. since stew's table tells us that he read 795 in 3 minutes, we can divide 795 by 3 to find out how many words he reads per minute.

795/3 = 265

stew reads 265 words per minute - he reads at the fastest rate since felecia reads at 260 words per minute and connie reads at 200 words per minute.

stew (265) > felecia (260) > connie (200)

question: use the following table of a school bus during morning pickups to calculate its average speed between 2.8 km and 4.2 km

answer: 42 km/h

explanation: 1.4/0.033 42.42424 = 42 km/h

question answered by

(jacemorris04)

the graph line crosses the x axis at both -6 and -2, so the answer would be the second one.