Suppose you want to test how fair is the coin. You conduct the following experiment. You flip the 2 coins multiple times and observe HH - 23 times, HT - 24 times, TH - 37 times, and TT - 34 times. What is the Test Statistics to test the Null Hypothesis that the coin is fair against the alternative hypothesis that the coin is unfair?

A researcher plans to conduct a marketing experiment to decide which shampoo has the better floral scent considering only two brands, "red" shampoo or "pink" shampoo. A sample of 190 people were chosen assuming that they can distinguish between the different scents. What are the symmetrical limits of the population percentage within which the sample percentage is contained with a probability of 90%?

Percent yield of alkyl halide (Show all calculations for limiting reactant, theoretical yield and percent yield.) Note I have 1.746g of product obatined of pure alkyl halide Also my unkown that i chose for this experiment was 3-methyl-1-butanol---- I started with 18.996g---15.281g after reflux-- 14.993g after IR spectroscopy

3. If you have colonies of two colors and sizes on your LB/amp/ara +pGLO plate, is there any noticeable pattern in the distribution of these colonies? If so, describe what you see.

4. On which of the four plates would you expect to find wild type E. coli growing? What purpose does this plate serve in the design of this experiment?

Isolation and Recrystallization of Aspirin Experiment. If the melting-point range of my purified aspirin is 129 - 131 degrees Celsius, and pure aspirin melts at 135 degrees Celsius. Which of the following best describes the purity of the aspirin I isolated?

a. Very pure.

b. More pure than the impure sample but still contains impurities.

c. Very impure.

Explain

Question )

a) Briefly state an explanation of what the helical spring in simple harmonic motion and its concepts are in min 300 words? (In word text, no pictures)

b) What is the Aim of The helical spring in simple harmonic motion experiment where in oscillations of 30 how long it takes or the time it takes for each set of weights is measured?(min 100 words)

A 5.274 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 11.99grams of CO₂ and 4.909 grams of H₂O are produced.

In a separate experiment, the molar mass is found to be 116.2 g/mol. Determine the empirical formula and the molecular formula of the organic compound.

Enter the elements in the order C, H, O

You are isolating C. elegant genomic DNA to b used in a subsequent experiment to amplify osm-3 gene by PCR. You add worms to a tube containing lysis buffer and proteinase K, and then use the PCR machine to hold the tube at 65°C for 90 minutes and then at 95°C for 15 minutes. What is the purpose of these two temperature steps?

Let’s say there is a gene known as X that is expressed in the developing forebrain and midbrain (located anteriorly), and a gene known as Y that is expressed in the developing hindbrain (located posteriorly). Describe one experiment to confirm that another gene, Z, which encodes a transcription factor, activates the expression of Y but represses the expression of X in the developing hindbrain; be sure to include your expected result.

At 326°C,1,3-butadiene dimerizes according to this equation: 2C₄H₆---->C₈H₁₂

In a given experiment, the initial pressure of 1,3-butadiene was 632.0 torr. Using the data table below, calculate the order of the reaction and the rate constant.