Aresearcher posts a radio advertisement offering $35 in exchange for participation in a short study. the researcher accepts the first eight people who respond to the advertisement. which of the following statements is true about the sample? (5 points) a. it is a valid sample because the first eight people were selected to participate. b. it is not a valid sample because it is not a random sample of the population. c. it is a valid sample because money was offered to participants. d. it is not a valid sample because it is only a short study.

The true sentence about the sample is B. It is not a valid sample because it is not a random sample of the population.

Step-by-step explanation:

The concept of random sample involves that the sample have to be representative and with the minimum bias. If the researcher wants to arrive to a conclusion about the population, eight individuals are not enough and he needs a method to select from his subsample (all individuals who respond the advertisement in a given period of time), individuals that will finally participate .

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.

$75.00

step-by-step explanation:

i = prt

i = 1,5000 * 0.025 * 2

i = 75