Multiple Choice
Suppose the average reading speed of 15 randomly selected elementary school students is 25,and the average reading speed of 15 randomly selected junior high school students is 31.You compute an independent samples t-test,and your 
is 3.12,which is statistically significant.Which of the following is the most appropriate conclusion?
A) Increases in age cause increases in reading speed.
B) We have evidence that older students tend to read faster.
C) There is a proven relationship between age and reading speed.
D) The difference between the older and younger students is due to sampling error.
Correct Answer:
Verified
Correct Answer:
Verified
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