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Formulate null and alternative hypothesis,identify the dependent, independent ,control and experimental variables

Quiz by Felix Famarin

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30 questions
Show answers
  • Q1
    In a science experiment, a group of students wants to test if the amount of sunlight affects the growth of plants. If they grow one group of plants in sunlight and another group in the shade, what is the dependent variable?
    the height of the plants
    the type of plants
    the temperature of the room
    the amount of water given
    30s
  • Q2
    If a researcher wants to determine if a new study technique helps students improve their test scores, what would be the alternative hypothesis?
    All study techniques result in the same test scores.
    Traditional methods are more effective than the new technique.
    There is no difference in test scores with the new technique.
    The new study technique improves test scores compared to traditional methods.
    30s
  • Q3
    In an experiment to test if different fertilizers affect plant growth, if one group of plants receives fertilizer A while another group receives no fertilizer, what is the control variable?
    the sunlight exposure
    the amount of water given
    the group of plants that receives no fertilizer
    the type of fertilizer used
    30s
  • Q4
    What is the independent variable in an experiment where students are testing how different amounts of study time affect test scores?
    the amount of study time
    the classroom environment
    the type of test
    the test scores
    30s
  • Q5
    In a study examining if playing video games affects reaction time, what would the null hypothesis be?
    Reaction time is the same for all activities.
    Playing video games makes reaction time worse.
    Playing video games improves reaction time.
    Playing video games has no effect on reaction time.
    30s
  • Q6
    When testing the effect of temperature on the solubility of sugar in water, which of the following is the experimental variable?
    the temperature of the water
    the amount of sugar used
    the size of the container
    the type of water
    30s
  • Q7
    In an experiment to see how different brands of batteries affect the lifespan of a flashlight, what would be the dependent variable?
    the brand of the batteries
    the brightness of the flashlight
    the lifespan of the flashlight
    the color of the flashlight
    30s
  • Q8
    When conducting an experiment to test whether different types of music influence plant growth, which type of music would be considered the independent variable?
    the amount of sunlight
    the type of music played
    the type of plants used
    the height of the plants
    30s
  • Q9
    In a study where scientists are investigating if eating breakfast affects students' concentration levels in class, what would the control variable be?
    the time of the day
    the type of breakfast eaten
    the students who do not eat breakfast
    the concentration levels
    30s
  • Q10
    In an experiment to determine if different colors of light affect plant growth, which of the following statements represents the alternative hypothesis?
    Plants grow differently under different colors of light.
    Plants grow better in complete darkness.
    There is no effect of light color on plant growth.
    All colors of light promote the same plant growth.
    30s
  • Q11
    In an experiment to test if studying more hours improves test scores, what is the correct null hypothesis?
    Studying more hours always leads to higher test scores.
    Students who study less will score better on tests.
    There is a relationship between hours studied and test scores.
    Studying more hours has no effect on test scores.
    30s
  • Q12
    In an experiment to determine the effect of light on plant growth, what would be the independent variable?
    The type of plant used.
    The amount of water given to the plants.
    The temperature of the environment.
    The amount of light the plants receive.
    30s
  • Q13
    In a study to explore whether a new fertilizer improves crop yield, which of the following is the control variable?
    The amount of fertilizer used.
    The type of soil used for both groups.
    The crop species being grown.
    The amount of sunlight received.
    30s
  • Q14
    In an experiment that tests if a new study technique improves quiz scores among students, what is the dependent variable?
    The quiz scores of the students.
    The time spent studying.
    The number of students in the experiment.
    The study technique being used.
    30s
  • Q15
    What would be a possible alternative hypothesis in an experiment testing whether a specific diet affects weight loss?
    The specific diet leads to a significant weight loss compared to other diets.
    All diets lead to the same amount of weight loss.
    The specific diet has no impact on weight loss.
    Only exercise affects weight loss.
    30s

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