Null hypothesis

Decent Essays
Improved Essays
Superior Essays
Great Essays
Brilliant Essays
    Page 9 of 50 - About 500 Essays
  • Improved Essays

    The null hypothesis of this test is that the past p values of X are not helpful to predict Y (X does not Granger cause Y). The alternative hypothesis is that the past p values of X are useful to predict Y (X Granger causes Y). p is the lag length of the Granger causality test and the results of the test depend on the chosen lag…

    • 941 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    The Effect of Caffeine on the Metabolic Rate of Goldfish Intro/Materials and Methods For this experiment, the hypothesis is that there is a difference in the metabolic rate of goldfish, measured in oxygen consumption, when the fish are in pure water versus when the fish are in water with 25 mg of caffeine. The null hypothesis is that there is no difference between in the metabolic rate of goldfish when the fish are in pure water versus when they are in water with 25 mg of caffeine. Results…

    • 594 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    When conducting a hypothesis test for the difference between two means it’s essentially called a two sample t-test. According to Dr. Mirabella (2011, p. 5-2) states that, “In each case you can conduct a t-test for independent means to determine if a significant difference exists.” Furthermore, we’re conducting this test to see if there is an overlapping or if there is clearly a difference among the GPAs for men and women. In our case we are comparing the GPAs for a sample of men and a sample…

    • 929 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    This experiment is the study on the effects of household drugs on the circulatory functions of the blackworm, Lumbriculus variegatus. Household drugs, such as tea, coffee, tobacco, and cigarettes, are easily accessible and may be used every day by a typical human being. These household drugs contain caffeine and nicotine at different concentrations. In addition, caffeine (found in tea and coffee) and nicotine (found in tobacco and cigarettes) can influence the behavior of physiological processes…

    • 899 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    Hypothesis About Sordaria

    • 1054 Words
    • 5 Pages

    Introduction The propose of this experiment was to see if we could conducted an experiment that we could elect data and act our hypothesis about sordaria. We hypothesized if tan and black sordaria got placed together to cross over, we could expect out of 50 sordarias that 27 would cross over and 23 would not cross over. Some research has brought up some discussion about how much tan or black sordaria is one the agar square to begin with. (Kitani 1961) If these numbers are more than the other,…

    • 1054 Words
    • 5 Pages
    Improved Essays
  • Great Essays

    Aedes Mosquito Case Study

    • 1133 Words
    • 5 Pages

    Explain TABLE REGRESSION Table 4.9: Result of simple linear regression between level and ovitrap index Variable SLR Level b (95% CI) p-value -2.5 (-7.7, 2.9) 0.236 R2 = 0.421. The model not fit well: Model assumption are not met There is statistically no significant linear relationship between level and ovitrap index (p= 0.236). The increase of the multi –storey house level is not associated with the ovitrap index level. With level, the model explains 42% of variation of the ovitrap…

    • 1133 Words
    • 5 Pages
    Great Essays
  • Improved Essays

    Quadrat Sampling

    • 578 Words
    • 3 Pages

    In addition, the quadrat sampling is simple and with the table and the performance curve we were able to find the density and the area. The data can be analyze in with the curve or with the table. Both of the information provided in the curve and the table shows that 3 is the density of pill bugs in the area. The second method for estimating abundance is the mark recapture method. When performing this method the average population estimate is 190.211 beans. The standard error is 5.15812 and…

    • 578 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    Pt2520 Lab 2.3

    • 618 Words
    • 3 Pages

    2.2 The method At the searcher will do the searching process as follows: I. Start at the origin and search the cell number 1 and then number 2, 3. Now, the first revolution is completed. If the target not found, then go to step II. II. Since, the target is not detected, then the searcher will do the second revolution which contain the cells number 4 to number 14 as in Fig.1(a). And so on until the hole will detect. Assuming that the target is randomly located in the space at the…

    • 618 Words
    • 3 Pages
    Improved Essays
  • Decent Essays

    1. Explain the concept of density. Density is how much matter is in the object, the atoms, and how they are arranged. It can tell others if anything sinks or not. Basically density is a measurement of atoms inside of them and how they are arranged. 2. a) Why couldn’t just the mass of a block be used to determine the identity of the block? Explain. Why couldn’t just the volume of a block be used to determine the identity of the block? Explain. If people only had the mass of the block, we can’t…

    • 332 Words
    • 2 Pages
    Decent Essays
  • Improved Essays

    2. Demonstrate which tests have improved, which have gotten worse, and which have stayed the same. If any tests have gotten worse, please explain why you think this has happened. If any tests have improved, that are NOT the component that you have been working on, please explain why you think this has happened. (2) All my test have improved except my BMI and my waist-to-hip ratio. To explain, my BMI has increased by 0.2 because my weight increased due to the fact that I gained muscle mass.…

    • 1768 Words
    • 8 Pages
    Improved Essays
  • Page 1 6 7 8 9 10 11 12 13 50