Which of the following statements about experiments is true?
Group of answer choices
None of these is true.
All experiments must have a control group.
Random assignment is only critical for treatment groups, as opposed to control groups.
Matching can be used in any experiment to eliminate lurking variables.
Blocking is employed to reduce variation.
The true options are :
1.) Matching can be used in any experiment to eliminate lurking variables. Because matched pair designs is a particular case of Randomised block designs which helps in elimination of confounding or lurking with random selection and homogenous blocks.
2.) Blocking is employed to reduce variation. Because we create blocks of homogenous data.
Which of the following statements about experiments is true? Group of answer choices None of these...
Which of the following statements is true about active transport? Group of answer choices a. It is needed only for the transport of polar molecules. b. The transported species can move against its concentration gradient. c. It is exergonic. d. It must be regulated by phosphorylation
Which of the following statements is true about the ANOVA? Group of answer choices An ANOVA indicates if any significant difference exists and specifies which two groups were statistically significant. An ANOVA indicates no significant difference between two groups that are statistically significant. An ANOVA indicates no significant difference between three groups that are not statistically significant. An ANOVA indicates if any significant difference exists but does not specify which two groups were statistically significant.
Which of the following statements about the Null Hypothesis Decision Strategy is false? Group of answer choices As a last step, we state whether our scientific hypothesis is actually true or not The logic of NHDS is much the same for all research scenarios except for when we have categorical response variables Confidence in our conclusions about our population of interest is greater when we are able to obtain a random as opposed to a nonrandom sample from that population...
Which of the following statements about the quantum-mechanical model of atoms is true? Group of answer choices Not only did the Bohr model correctly describe the hydrogen atom and its line spectra, but it also perfectly described more complicated multi-electron atoms. Multiple measurements of the position of hydrogen’s electron, when it’s in the ground state, find a range of values, but on average, it is located at a distance of one Bohr radius from the proton. There are multiple values...
What of the following statements is not true about group price discrimination? Group of answer choices it is less difficult to charge different prices to different consumers if a good is an individually provided service, such as haircuts the group of consumers with more elastic demand (as a given price) will be charged a higher price in theory the good considered must be the same, but in the real world a price discriminating monopolist may need to change the good...
Which of the following statements is NOT true about theories? Group of answer choices Theories summarize the facts as currently known. Theories are unchanging bodies of research. Theories allow us to predict future behavior. Theories stimulate new research.
Which of the following statements about the marketing research process is true? Group of answer choices The steps in the marketing research process are highly interrelated. Every marketing research project involves all of the research stages. The steps in the Marketing Research process are chronological and independent of one another. Good marketing research entirely eliminates uncertainty.
Question 24: Which of the following statements is true about transcription? Group of answer choices a. In both prokaryotic and eukaryotic cells, transcription requires a promoter b. In eukaryotic cells, orientation and positioning of the polymerase is determined by sigma c. All transcription initiates in the cytoplasm d. In prokaryotic cells, orientation and positioning of the polymerase is determined by TBP and TFII-like transcription factors Question 25: If the transcribed mRNA using this coding strand were to be translated, the...
Which of the following statements about London dispersion forces is/are true? Group of answer choices London dispersion forces are stronger between molecules of 1-butanol than between molecules of 2-methyl-2-propanol. London dispersion forces are stronger than hydrogen bonding interactions. both a and b neither a nor b How many different alkene products (counting cis and trans isomers of a compound as a single product) could be produced when 3-methyl-3-pentanol is dehydrated? Group of answer choices 1 2 3 4
Which of the following statements about human-made CO2 is NOT true? Group of answer choices: A.Oceans and photosynthesis do not take up all human-made CO2. B. The amount of CO2 produced by human activities is low. C. Burning coal and oil adds CO2 to the atmosphere. D. Burning fossil fuels adds CO2 to the atmosphere.