(CO 1) What type of data collection might be best to estimate the impact of exercise on longevity?

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Question 72 pts

(CO 1) What type of data collection might be best to study how voters might decide an upcoming ballot issue?

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Question 82 pts

(CO 1) You need to study the satisfaction of customers of a specific restaurant. You ask every 10^th customer as they leave after their meal. This would most closely describe which type of sampling technique?

An experiment was carried out to make lead chloride from lead nitrate. 34.6 g of lead chloride were obtained from 50.8 g of lead nitrate.

Determine the percentage yield of lead chloride.

a Determine the moles of lead nitrate,

used in the experiment. (To avoid introducing rounding errors on intermediate calculations, enter your answer to four significant figures.)

Moles of lead nitrate used = ______ mol

Reactant mass 50.8 g

Product mass 34.6 g

Molar mass Pb 207 g/mol

Molar mass N 14 g/mol

Molar mass O 16 g/mol

Judy and Elroy Jetson take a field trip to Mars for science class (recall that the acceleration due to gravity on Mars is smaller than on Earth, gMars = 3.7 m/s2 ). They repeat a version of Millikan’s oil-drop experiment.

(A) Compared to the same experiment on Earth (same drop mass and charge) would the required electric field to hold the oil drop in place be smaller, larger, or the same (why)?

(B) Elroy forgets to write down the charge for one of his droplets. He thinks it might have been 2.30 × 10−19 C. Judy says that Elroy remembered incorrectly, why did she say that?

The famous Hungarian mathematician Alfréd Rényi once declared: “A mathematician is a device for turning coffee into theorems.” A researcher wants to test whether drinking coffee affects scores graduate students achieve in a test of mathematical ability performed an hour later. Thirty volunteers are available for the study.

a) What are the explanatory and response variables in this study?

b) Design a completely randomised experiment for this study, in which each volunteer completes the test ONCE ONLY. Comment on elements of control, randomisation and replication in your design. Your answer should include a schematic diagram or flow chart.

c) Say what comparisons you would make at the end of the experiment.

An experiment is done to measure electron transport and ATP synthesis in isolated mitochondria. Sketch a plot of the hypothetical experimental results if you measure both O2 consumption and ATP synthesis ( Left Y-axis for O2 consumption; Right Y-axis for ATP production, overlay both on the same plot. You may use different color or simply indicate the curves) versus time (X-axis). Start the experiment (t = 0) with succinate, ADP, and Pi in the mix and successively add DNP at t = 4 min., and then Oligomycin (at t = 8 min.). Indicate the point in the plot that each agent is added. (4 points)

In your lab you are studying the kinetics of the degradation of a pain killer in the human liver. You are monitoring the concentration of the pain killer over a period of time. The initial concentration of the pain killer in your experiment was 1.51 M. After 15.58 hours the concentration was found to be 0.7550 M. In another 15.58 hours the concentration was found to be 0.3775 M (t = 31.16 hours overall).

If another experiment were set up where the initial concentration of the pain killer was 0.383 M, how long would it take for the pain killer concentration to reach 0.0205 M?

Also, for this type of problem, how can I determine the order?

1)Design the sample space for an experiment where you will flip three coins into the air, first one, then the second, and finally the third to examine the faces landing upwards. Use the sample space to answer the questions that follow. Probabilities should be expressed as decimals.

A) Please identify the sample space for this experiment.

B) What is the probability of at least one head showing?

C) What is the probability of exactly one tail showing?

D) What is the probability of all three coins matching?

E) What is the probability of a tail showing from the first flip, a head showing on the second flip? (either result on the third flip is included)

You are 50m away from a train and running at a constant velocity of 26m/s. The train has a constant acceleration of 39m/s2. If it takes the train 4.92 seconds to reach a distance of 150m, and it takes you 5.78 seconds to reach a distance of 150m, then at what distance will the two meet? Please show what equations to use, THEN input the values. Thanks!

Please let me know if there are any missing variables you need. I'm trying to do a lab experiment and I don't know what equations to use--also I know that the measurements are unrealistic, I'm just giving you the variables from my experiment.

A colleague of the investigators is problem 3 repeats the experiment but matches the samples on the dimensions of sex and job type. the raw data appear below. Evaluate her experiment using the criteria of p < .05. Assume it is a two tailed test.

Pairs: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Contr: 38 40 35 36 35 32 31 30 28 26 24 21 18 34 22

Relax: 35 32 30 34 30 32 28 27 22 22 18 17 17 25 21

Please provide
Definitions, some explanation along with example for each topic
(Note: please provide all data in text format pdf/text so i can copy into MsWord because i have to submit my assignment in printed form)

1)Random experiment
2)properties of random experiment
3)sample space
4)event
5)simple event
6)compound event
7)equally likely event
8)mutually exhaustive probability
9)classical or priori probability
10)relative frequency or posterior prob.
11)Axiamatic probability
12) Properties of probability