Kean Gerard Sumayo Experiment 1 APPLICATION OF STATISTICAL CONCEPTS IN THE DETERMINATION OF WEIGHT VARIATION IN SAMPLES I. OBJECTIVES 1. To determine the use of the different statistical concepts 2. To perform the proper applications of the statistical methods/ concepts on determining the weight variations of samples II. RESULTS and DISCUSSIONS A. Weight of Samples Ten 1-peso coins were used as samples for this experiment and were weighed carefully
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Observation and Experiment Data Table A. The Overall Reaction What are the physical properties of the individual substances? Chemical Observation Calcium Chloride Grainy‚ White Sodium Bicarbonate White‚ flour texture Phenol Red Solution The color of Hawaiian punch‚ thin consistency‚ semi- transparent What happens when the substances are mixed together? Observations Calcium Chloride- Foams and heats up when mixed with the phenol red. Turned orange Sodium Bicarbonate- Turned orange
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Purpose: To find the initial velocity of a marble leaving a ramp using time‚ range‚ and background information learned in class. Equipment: The equipment used in this experiment was a toy track and ramp‚ a small marble‚ multiple Physics textbooks‚ meter sticks‚ bright-colored cardstock‚ masking tape‚ sidewalk chalk‚ plastic bag and a cloth. Procedure: Our experimental values include the height that the marble would travel‚ y= 88.1 cm‚ and our ramp angle‚ θ= 44.0°. These independent variables
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The purpose of this experiment was to test the tonicity of potato cells. The potato cells were placed in different test tubes with water and were left there for 15 minutes. The percent change in mass is then used to determine if the cells lost or gained water‚ therefore determining the tonicity of the cell. Although it was a brief short time‚ the final results showed that the more water the potatoes were placed in‚ the more hypotonic the potato becomes. Tonicity is stated to be the state of a solution
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Is it normally acceptable to experiment on non-human animals to develop products and medicines that benefit human beings? New scientific research has cast grave doubt on the safety testing of hundreds of thousands of consumer products. Everyday products‚ from soft drinks to paints‚ contain numerous synthetic chemicals. Official assurances of the safety of these chemicals are based largely on animal experiments. But recent results from a consortium in America suggested such assurances may be worthless
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Brenda Richardson Intro. to Psych. Chapter 6 Part 2 Loftus Experiment Elizabeth Loftus‚ a psychologist and expert on memory‚ has conducted much research on human memories‚ real and imagined‚ and how that may happen. Loftus‚ personally‚ has experienced the misinformation effect and eyewitness memory. Even though there are several experiments outlined‚ I chose the ’Lost in the Mall’ experiment as more fitting to the sex abuse testimony she gave. Participants‚ twenty-four of them‚
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Section November 7‚ 2012 Abstract The effect of water and fertilizer on corn seedlings was examined. It was hypothesized before the experiment that enough water with sunlight and air should make the plants grow healthy. It has to do with photosynthesis. Fertilizer is also going to make the plants grow much faster; this is because of the nutrients in it. The experiment took about four to six weeks to complete; it took some days for the seed to germinate before planting. The corn was growing there were
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The ‘Experiment’ by Dr Haskell portrays the unusual experiment that he conducted to compare his bare body and a Chickadees body in harsh freezing conditions. He decided to investigate it further because there was no logical explanation for a tiny bird to be able to survive in such conditions. He related his astonishment to the Bergmann’s rule‚ which states that larger animals will be found in colder climates and smaller animals will be found in warmer climates. Haskell found that the Chickadees
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OBJECTIVE The purpose of this experiment is to analyze mixtures of compounds prior to‚ during and after a separation scheme. This experiment also allows monitoring reactions of organic molecules‚ and determines the identity of a mixture of compounds. STRUCTURES AND PHYSICAL PROPERTIES OF REACTANTS [1] SOLVENTS | a. Hexane1Molecular Molarity: 86.18 g/molBoiling Point: 69 ºCMelting Point: -95ºCDensity: 0.659 g/mL at 25ºCWater Solubility: Insoluble in waterColor/Texture: Colorless/LiquidHazardous
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if this medicine cures the disease. All of these cases relate to decision making. We cannot reach a conclusion in these examples unless we have access to data. Data can be obtained from observational studies‚ experiments‚ or surveys. This article is devoted mainly to controlled experiments. However‚ it also explains observational studies and how they differ from surveys. Suppose two diets‚ Diet 1 and Diet 2‚ are being promoted by two different companies and each of these companies claims that
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