The lifespans of lizards in a particular zoo are normally distributed. The average lizard lives 3.1 1 years; the standard deviation is .06.
Use the empirical rule (68- 95- 99.7 percent) to estimate the probability of a lizard living less than 2.5 years. PLS HELP

Based on the figures as marked, /\rqs = —

Atorch and a battery cost 2.50 altogether.the torch costs 1.50 more than the battery.what fraction of the total price is the torch? give your answer in its simplest form.

70 points ! pls 2. given the following two sets of data what is the union of the two sets and what is the intersection of the two sets. set a = {1, 2, 3, 4, 5, 6, 7, 8, 9} set b = {2, 4, 6, 8, 10, 12, 14} 3. given a regular deck of cards. describe a way of pulling cards that would create a dependent event and then one that would create an independent event. 4. what is the probability of drawing a red card and then drawing a spade without replacing the card that was drawn first?