Keisha decides to roll a number cube until she gets a 6. Let X = the number of rolls until she rolls a 6. What is the probability that Keisha gets her first 6 before her 3rd roll? Round to 3 decimal places.

Recall: P(X = k) = (1 – p)k–1p

0.139
0.167
0.306
0.421

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What kind of interaction is depicted in the image? a. intraspecific, direct b. intraspecific, indirect c. interspecific, direct d. interspecific, indirect e. invasion

What is it called when someone gets sick from eating food contaminated with germs or toxins? a. potentially hazardous food b. ptomaine poisoning c. foodborne illness d. raw food