Consider the following data:
x 4 5 6 7 8
P(X=x) 0.1 0.2 0.2 0.3 0.2
Step 1 of 5: Find the expected value E(X). Round your answer to one decimal place.
Step 2 of 5: Find the variance. Round your answer to one decimal place.
Step 3 of 5: Find the standard deviation. Round your answer to one decimal place.
Step 4 of 5: Find the value of P(X>4). Round your answer to one decimal place.
Step 5 of 5: Find the value of P(X<7). Round your answer to one decimal place.
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