The common wall lizard, Podarcismuralis, is native to Europe but has also been
|
Prey Type |
· Time of Day |
||
|
Beetle |
22 |
Morning |
51 |
|
Snail |
31 |
Afternoon |
20 |
|
Spider |
15 |
Evening |
45 |
|
Rodent |
6 |
|
|
|
Bird egg |
42 |
|
|
In each of the following questions, we assume that prey type and time of day are independent samples or sets.
1. What is the probability of getting each type of prey item? What is the probability of being observed eating at each time of day?
2. What is the probability that a lizard will be found eating an invertebrate?
3. What is the probability that a lizard will be found eating prey at some time other than in the evening?
4. What is the probability that a lizard will be found eating a rodent in the morning? What is the probability that a lizard will be found in the afternoon eating a snail?
5. If we already know that a lizard was found munching on a snail, what is the probability that it was observed during the afternoon?
NOTE: For all parts of question 2 I want you to show your work, including which formula (or formulas) you used to answer the question!