Exercise 1: Data Interpretation Table 1: Water Quality vs. Fish Population Dissolved Oxygen | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | Number of Fish Observed | 0 | 1 | 3 | 10 | 12 | 13 | 15 | 10 | 12 | 13 | 1. What patterns do you observe based on the information in Table 1? -The more dissolved oxygen in the water, the more fish is observed in that area of water. 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. -If there is more dissolved oxygen in the water, there will be more fish present in the area the water sample is taking from. 3. What would your experimental approach be to test this hypothesis? -I …show more content…
3. Four friends decided to go out and play horseshoes. They took a picture of their results shown to the right: 4. A local grocery store was holding a contest to see who could most closely guess the number of pennies that they had inside a large jar. The first six people guessed the numbers 735, 209, 390, 300, 1005 and 689. The grocery clerk said the jar actually contains 568 pennies. Exercise 5: Significant Digits and Scientific Notation Part 1: Determine the number of significant digits in each number and write out the specific significant digits. 1. 405000 6 or 3 2. 0.0098 2 3. 39.999999 8 4. 13.00 4 5. 80,000,089 8 6. 55,430.00 7 7. 0.000033 2 8. 620.03080 8 Part 2: Write the numbers below in scientific notation, incorporating what you know about significant digits. 1. 70,000,000,000 7 x 1010 2. 0.000000048 4.8 x10-8 3. 67,890,000 6.789 x107 4. 70,500 7.05 x 104 5. 450,900,800 4.509008 x 108 6. 0.009045 9.0450 x 10-3 7. 0.023 2.3 x
1. Use the graph below to predict what the results will look like if the null hypothesis is
9. Question : In statistical notation, M is to μ as s is to σ.
The dissolved oxygen levels are much higher in this experiment than in the previous experiment.
The protein molecules in many foods provide the amino acid building blocks required by our own cells to produce new proteins. To determine whether a sample contains protein, a reagent called Biuret solution is used. Biuret solution contains copper ions. However, the chemical state of the copper ions in Biuret solution causes them to form a chemical complex with the peptide bonds between amino acids (when present), changing the color of the solution. Biuret solution is normally blue, but changes to pink when short peptides are present and to violet when long polypeptides are present.
fresh-tasting fluid could be sucked out not only from the eyes of larger fish but also from their
designing an experiment, we have to design an experiment and we need to confirm the
(2) Give that a sample of 25 had x = 75, and (x-x)² = 48 the mean and standard
Procedure: Using distilled water, premeasured containers and objects determine displacement of fluids and density of objects. Use ice and heat measure temperatures in Celsius, Fahrenheit and Kelvin.
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.
As the Dissolved oxygen increases so does the number of fish that are observed, until the ppm gets up to 14 then the
- Having more dissolved oxygen increases the number of fish observed in the body of water.
At the conclusion of the experiment, the two hypotheses were reviewed. Because the water temperature did affect the normal respiration patterns of the goldfish, the null hypothesis was disregarded and the alternative hypothesis was accepted. From the results of this experiment, it was concluded that although other environmental factors could play
2. For the following set of scores, fill in the cells. The mean is 74.13 and the standard deviation is 9.98.
I will say that as much as the expression “Canary in the coal mine” implies an early warning of danger in mines so does it in water too. In this case the fish directly helps us know the extent to which our ecological sphere is damaged, and helps humans to take the necessary precautions to save the environment.
1. A random sample of size 15 is selected from a normal population. The population standard deviation is unknown. Assume the null hypothesis indicates a two-tailed test and the researcher decided to use the 0.10 significance level. For what values of t will the null hypothesis not be rejected?