pre lab questions:

1. Define “acid” according to the Bronsted-Lowry theory of acids and bases.

2. Hypothesize what might occur to the sodium bicarbonate when it reacts in Part B of this experiment. What will you see?

3. The NaI might undergo one of two different reactions when it reacts with 18 M sulfuric acid in Part C of this experiment. Describe what happens in both of these possibilities (in words or with reaction equations)

4. Lookup the physical appearance of I₂ and Cl₂. What do they look like?

5. Hypothesize what might occur to the magnesium and copper metals when they react with HCl in Part D of this experiment.

1. What two characteristics of the data do you need to determine which binomial distribution to use?
2. What two characteristics of the data do you need to determine which Poisson distribution to use?
3. What two characteristics of the data do you need to determine which normal distribution to use?

(2) For the following scenarios determine if you should use Binomial, Poisson or Normal Distributions

(a) The experiment/problem involves 2 independent outcomes, a fixed number of trials with a known (fixed) probability of “success”

(b) The experiment/problem involves number of outcomes per area or time

(c) The experiment/problem involves determining the probability of certain measurements

Where is the image in a plane mirror formed?

Your friend Noelle suggests the following hypothesis: "The image of an object formed by a plane mirror is formed on the surface of the mirror." Design an experiment to test Noelle's hypothesis.

Available equipment: Plane mirror, object, masking tape, paper, meter stick.

Design and describe the experiment that you plan to perform. Remember that your prediction of the outcome if the expirement must allow from the hypothesis you are testing. Then perform the experiment and record the outcome. Explain the outcome using a ray diagram. Discuss whether the outcome agrees or disagrees with the prediction. If it disagrees, how would you convince Noelle that her idea has been disproven?

1. Does your result match what you had expected based on how you know enzyme activity is affected by temperature? Explain.
2. What changes would you make to improve this experiment? Provide at least one suggestion for improvement.
3. What could you do to increase enzyme activity in this experiment? Provide at least one suggestion.
4. Do animals have an enzyme that breaks down hydrogen peroxide? How could you test for the presence of such an enzyme?
5. What changes would you make to this experiment to determine the optimal temperature for this particular enzyme? Do a web-search to find the optional temperature for this enzyme. Include references to information sources.

1. Write a function named ”ThreeDicesAdd” to perform the following ”experiment” 1000 times: roll 3
six-sided dice and add their values. Put the outcomes in a list called addDiceList. So addDiceList should
have length 1000, and each of the 1000 elements should be an integer from 3 to 18. Plot the histogram of
the outcomes.
2. For the same experiment as in question 1, write a function named ”ThreeDicesAdd2” to increase the
experiment times (N) and see how the histogram of the outcomes changes. For each N, you will have one
histogram plot. Output all plots as a GIF file. (Choose N= 1000 : 10,000 : 1,000,000). matlab question

According to an​ airline, flights on a certain route are on time 80​% of the time. Suppose 10 flights are randomly selected and the number of​ on-time flights is recorded.

​(a) Explain why this is a binomial experiment. (options provided below)​

A.There are two mutually exclusive​ outcomes, success or failure.

B.The probability of success is different for each trial of the experiment.

C.Each trial depends on the previous trial.

D.There are three mutually exclusive possibly​ outcomes, arriving​ on-time, arriving​ early, and arriving late.

E.The exeriment is performed a fixed number of times.

F.The probability of success is the same for each trial of the experiment.

G.The trials are independent.

H.The experiment is performed until a desired number of successes is reached.

(b) Determine the values of n and p. ​

(c) Find and interpret the probability that exactly 6 flights are on time. ​

(d) Find and interpret the probability that fewer than 6 flights are on time. ​

(e) Find and interpret the probability that at least 6 flights are on time.

​(f) Find and interpret the probability that between 4 and 6 ​flights, inclusive, are on time.

Imagine you wanted to design a quasi-experiment to study the hypothesis that Changing the start of the day in high school start time to 8:30 a.m. or later causes teens to suffer less depression. Imagine that there are four public high schools, all in the same area of the country, that are willing to participate in this study. Currently, they all start between 7:20 a.m. and 7:35 a.m., but in fact, two of the high schools are already planning to change their starting times next fall.

1.Why might it be more practical to conduct a quasi-experiment on this question, rather than a true experiment? (2 pts)

2. Using one of the designs below, design a quasi-experiment to research this question. Clearly identify which study type you are using and clearly demonstrate knowledge of the study design. (4 pts)

•Nonequivalent control group design (posttest-only)

•Nonequivalent control group design (pretest/posttest).

•Interrupted time-series design

•Nonequivalent control group interrupted time-series design

For the clinical trials of a weight-loss drug containing Garcinia Cambogia the subjects were randomly divided into two groups. The first received an inert pill along with an exercise and diet plan, while the second received the test medicine along with the same exercise and diet plan. The patients do not know which group they are in, nor do the fitness and nutrition advisors. a. Which is the treatment group? b. Which is the control group (if there is one)? c. Is this study blind, double-blind, or neither? d. Is this best described as an experiment, a controlled experiment, or a placebo-controlled experiment?



To test a new lie detector, two groups of subjects are given the new test. One group is asked to answer all the questions truthfully. The second group is asked to tell the truth on the first half of the questions and lie on the second half. The person administering the lie detector test does not know what group each subject is in. Does this experiment have a control group? Is it blind, double-blind, or neither? Explain.​​​​​​​

For this assignment, you participated in an online experiment on facial recognition. Using the data that I gave you and your statistics from the analysis, you will write a short lab report (2-3 pages) in APA style consisting of an Introduction, Method, Results, Discussion, and References.

Doing the experiment online is only to give you an idea of how the experiment works. You will write the mini lab report as if you were the researcher who conducted the experiment.

You may use this article by Rehman and Herlitz (2007) as a reference in your report: Facial Recognition Article

Here is the grading rubric for this report: Mini Lab Grading Rubric