Modular arithmetic

Problem 1.17 In problem 1.17, the average age of pinon trees in the coast ranges of California was investigated. 500 ten-hectare plots randomly selected using a computer. The age of every pinon tree within each plot was measured and the average age of the plot was used as the unit measurement (Whitlock and Schluter, 2015, pg 20). The results of this investigation were used to estimate the average age of California pinon pines, making the population of interest in this study is all California…

For example, if σ = 45% and ρ = 0.2, then the standard deviation with 50 stocks would be 20.91%, and would rise to 22.05% when only 20 stocks are held. Such an increase might be acceptable if the expected return is increased sufficiently. Hennessy could contain the increase in risk by making sure that he maintains reasonable diversification among the 20 stocks that remain in his portfolio. This entails maintaining a low correlation among the remaining stocks. For example, in part (a), with ρ = 0…

I find it extremely interesting that most teachers were not able to give the correct answer to the fraction problem. Fractions may take some time to understand, but a teacher should be able to understand and implement a problem regarding fractions. Also, does putting a fraction into story form confuse teachers and so they are not able to put in the correct way? I believe that teachers need to make sure they are not getting confused with connecting the symbols to elements in the story and then…

The preeminent design of the paper helicopter experiment would comprise of the best mean and standard deviation of the overall measured data. An in depth comparison of the mean value and the standard deviation of each variable will be discussed in relation to a measure suitable for a longer flight time and a more accurate landing. These variables will be discussed relevant to the data and information gathered from our experiment during testing. The ratio of each helicopter will be discussed in…

Methods We began this experiment by laying out the needed materials to find the chromatography of Skittles Sweets and Sours and Crayola markers. Using a ruler and a pencil, a line was drawn on all thirty chromatography strips 1.5 centimeters from the bottom of the paper. This was to ensure that the starting point for each chromatography process was consistent. The chromatography of the skittles was found first. We began by pouring water into a cup. A pipette was used to transfer fifteen…

Planning, performing and reporting are the three major stages of auditing. The first stage in an audit is the planning stage. The planning stage consists of getting to know the client, pinpointing factors that could impact the risk for a material misstatement for the financial records, and creating an audit strategy (Wiley,2015). Marilyn Terrill is the senior auditor for the the Uden Supply Company audit, for this client she will need to perform the analytical procedures and calculate the…

During this project we had to collect a quantitative number of fifty data information. For my project I decided to do the quantity a person has visited amount of states, including just driving through. Sample surveys is based off a sample of observations that are supposed to use the probability for showing the rest of the population. Experiments are taken place when there is a procedure and it consist of a hypothesis or demonstrating a known fact. Then there is an observational study in which is…

Naplan For assessment two, we were to answer 6 questions form a year nine NAPLAN test. This test is compulsory for all year nine students to complete as per ACARA ( 2016). The test is designed to access the skills of Australian students by collecting data from the population of years 3,5,7 and 9 as well as an assessment of the students a gainst the national minimum standards. For these questions I was mostly confident in answering them correctly, some questions were easy to answer from general…

Introduction. Serial correlation can be defined as a relationship between elements within a time series. It can affect the variance of our estimators, and cause us to incorrectly estimate our true mean, Y ̅. To properly study and analyze a covariance stationary time series, we need to know something about the correlation/covariance structure. Several methods exist for dealing with serial correlation. Here, we will deal exclusively with batch means, replication/deletion, and the Mean Squared…

When conducting a hypothesis test for the difference between two means it’s essentially called a two sample t-test. According to Dr. Mirabella (2011, p. 5-2) states that, “In each case you can conduct a t-test for independent means to determine if a significant difference exists.” Furthermore, we’re conducting this test to see if there is an overlapping or if there is clearly a difference among the GPAs for men and women. In our case we are comparing the GPAs for a sample of men and a sample…