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1. Make an observation – Based on the data in Table 4, discuss what patterns you observe in regards to dissolved oxygen content and fish populations in

1. Use the graph below to predict what the results will look like if the null hypothesis is

each Ob­Scertainer. I formed a hypothesis for each one, then I took retests to make more

The scenario for this case study is that you notice that the grass around my house is brown, short, and dead. The grass around my neighbor's house is green, tall, and alive. Utilizing my understanding of the Scientific Method, my intent is to explain what the problem is to develop a hypothesis. After developing the hypothesis I will then design and perform an experiment to test my hypothesis; analyze my data and reach conclusions regarding my hypothesis. I will

Research Design: The independent variable of this project would be if there is already money in the tip jar. Furthermore, the independent variable can also be when there is no money in the tip jar. Thus, the two levels are there is money in the tip jar (this receives larger tips) or there is no money in the tip jar (receive less tips than you would if there is money in the tip jar). As people enter the bar and go to the bar the experimenter will roll the die and determine what group the person will be assigned to, the experimental (money in the jar) or the control (no money in the jar). At the same time the research

There were three different runs in order to have comparable data and to increase the validity of the experiment. The first run gave 39% of Sodium Bicarbonate. The second run gave 34% of Sodium Bicarbonate while the third one gave 39%, which is the same as the first run. The average percentage was 37% which is much lower than the manufacturer's percentage of 59%. The percent error came out to be -37%.

Select one (1) project from your working or educational environment that you would use the hypothesis test technique. Next, propose the hypothesis structure (e.g., the null hypothesis, data collection process, confidence interval, test statistics, reject or not reject the decision, etc.) for the business process of the selected project. Provide a rationale for your response.

2. Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water.

7. Graph the data from Table 1: Water Quality vs. Fish Population (found at the beginning of this exercise). You may use Excel, then “Insert” the graph, or use another drawing program. You may also draw it neatly by hand and scan your drawing. If you choose this option, you must insert the scanned jpg image here.

2. A science teacher tells her class that their final project requires the students to measure a specific variable and determine the velocity of a car with no more than 2.50% error. Jennifer and Johnny work hard and decide the velocity of the car is 34.87 m/s. The teacher informs them that the actual velocity is 34.15 m/s. Will Jennifer and Johnny pass their final project?

The performance had to be forced in a bell curve like curve where high performers could be maximum of 14%; Achievers (A) min 70%; Low Achievers (L) min 7% and Unacceptable (U).

The procedure for this experiment followed the steps as shown in the flow chart (Figure 1) and will be expanded upon here. The oxygen-measuring probe in the test chamber was first turned on and required 10 minutes to warm up. During this time, two empty containers had 200mL of fish water added to them and then each was weighed using a scale that was tared to zero before use. Two pairs of goldfish were then collected from the large tank #1 in the lab room using the fish net provided, and one pair was placed in each container. Then, the containers were reweighed separately and the original weights were subtracted from the new weights in order to determine each pair of goldfish’s weight. Two trials were conducted and in each trial, each goldfish pair was subjected to two conditions, first a control condition where no factors were introduced, followed by an experimental condition where they were exposed

 Explain how the data collected will provide the data necessary to support or negate the hypothesis or proposition

The alternative hypothesis was that the metabolic rate of goldfish in ambient light verse no light, as measured by oxygen consumption, would differ. The null hypothesis was that the metabolic rate of goldfish in ambient light verse no light, as measured by oxygen consumption, would not differ. Results There was a total of 8 different trials and each trial had 2 different goldfish. Thus, the sample size was 16 goldfish.

In the Aquarium experiment it consisted of 5 tanks: tank 1 included rocks and water , Tank 2 contained water, gravel rocks and plants, tank 3 contained gravel rocks, water, snails, tank 4 contained gravel rocks, water, snails and tank 5 contained water, gravel rocks, snails and plants. For conduction this experiment we made multiple predictions before conducting this experiment. First tank 1 we predicted that the level of carbon dioxide wouldn’t occur and also the level of oxygen. They wasn’t any activity such as plant or animal in the tank to create any process. This would be the case because they was photosynthesis or cellular respiration involved in this tank. For the data we collected from this tank determine that the prediction was