Mathematics, 28.01.2020 16:54 kkeith121p6ujlt
Aresearcher posts a newspaper advertisement offering $20 in exchange for participation in a short study. the researcher accepts the first five people who respond to the advertisement. which of the following statements is true about the sample?
a it is not a valid sample because it is only a short study.
b it is a valid sample because money was offered to participants.
c it is a valid sample because the first five people were selected to participate.
d it is not a valid sample because it is not a random sample of the population.
Answers: 2
Mathematics, 21.06.2019 21:30
Anumber cube is rolled two times in a row. find the probability it will land on 2 on the first roll and a number greater then 4 on the second roll
Answers: 1
Mathematics, 22.06.2019 00:30
The graph of f(x) is obtained by reflecting the graph of f(x)=-3|x| over the x-axis. which equation describes f(x)? a) f(x)=3|x| b) f(x)=|x+3| c) f(x)=-3|x| d) f(x) = - |x+3|
Answers: 1
Mathematics, 22.06.2019 00:30
$5400 is? invested, part of it at 11? % and part of it at 8? %. for a certain? year, the total yield is ? $522.00. how much was invested at each? rate?
Answers: 1
Aresearcher posts a newspaper advertisement offering $20 in exchange for participation in a short st...
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