1. biased sample2. convenience sample 3. unbiased sample 4. self-selected sample 5. stratified sample 6. systematic sample a. members are selected from the different subgroups within a population. b. sample where representatives are easily accessible. c. sample where every member of the population has an equal chance of being selected. d. sample members are selected through the use of a rule. e. sample not representative of the entire population. f. sample where members volunteer to take part.

c

step-by-step explanation:

i think because what else can be a sample of every member

what i would say the best answer is a. 40.5

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation: