# Category: Mathematics

## Is there a correlation between overall quality and difficulty level ratings of instructors on RateMyProfessor.com?Discuss

Research Question: Is there a correlation between overall quality and difficulty level ratings of instructors on RateMyProfessor.com?

## Explain the measuring scale associated with the question and if the data collected is cross-sectional or time series.

Your first should be a question associated with a categorical (quantitative) variable. Explain the measuring scale associated with the question and if the data collected is cross-sectional or time series. What might you be able to infer about the data you would collect? Your second should be a question associated with a quantitative variable. Explain […]

## Use the Shell Sort algorithm to rearrange the numbers 5, 9, 1, 7, 4, 6 into ascending order. Explain the method, demonstrate all passes and state the total number of comparisons and swaps.

Use the Shell Sort algorithm to rearrange the numbers 5, 9, 1, 7, 4, 6 into ascending order. Explain the method, demonstrate all passes and state the total number of comparisons and swaps. (8 marks) Using the list of numbers, 5, 9, 1, 7, 4, 6 given in question 1, Use the Quicksort Algorithm to […]

## Explain why a person would be wrong to claim, “My correlation coefficient is positive, therefore the two variables are highly correlated.”

1.A student is analyzing how two variables are correlated: size of committee and “efficiency” of committee. He reports to his friends that he had a correlation coefficient (r) of -0.85. What does the negative sign on the “r” tell us? (Hint: Don’t just say that the relationship is negative – explain what that means!!) 2. […]

## Do you think you would also collect some descriptive data, such as gender, age, or shift? Why do you think it makes sense to collect descriptive data?

Clearly define the problem or issue you are addressing. Provide a brief background of any research you have found that might affect your research hypothesis. Create a research hypothesis based on the information provided in each scenario. You have been given a data set (Microsoft® Excel® document) with two sets of interval data (just the […]

## How much noisier are streets where cars travel faster? A department of transportation worker wants to fit a simple linear regression model /41„ = + fl rx where x is the speed of the car in mph and y is the noise level in decibels. State the null and alternate hypothesis whether the speed of the car is significantly linearly associated with the noise level.

‘ssfl ,onsider the table you used in question 22. Can you conclude that the mpg is less for tread B in for tread A? Use the a = 0.01 level and interpret in the context of the problem. 6 of 6 a random sample of 340 cars driven at low altitudes, 46 of them exceeded […]

## What are the pros and cons of the significance level you selected (i.e., use the terms Type I and Type II error in your response)?Discuss

Part A A researcher is conducting a study to determine if a newly developed drug, X, is an effective treatment for treating Basal cell carcinoma (i.e., a common kind of skin cancer). The researcher collects a sample of 2,000 participants from the population of people suffering from Basal cell carcinoma. As part of this study, […]

## A polymer material, subjected to a constant strain of 0.5, undergoes stress relaxation from 3.5 MPa to 0.5 MPa in 30 seconds. What is its modulus of elasticity at 10 second?Calculate

1.Calculate the weight average molecular weight for a thermoplastic that has the following weight fractions for the molecular weight ranges listed.Hint: consult pages17and 18 of lecture file 210426.Molecular Weight Range(g/mol)Weight FractionMolecular Weight Range(g/mol)Weight Fraction0 –5,0000.0120,000 –25,0000.195,000 –10,0000.0425,000 –30,0000.2110,000 –15,0000.1630,000 –35,0000.1515,000 –20,0000.1735,000 –40,0000.072.The average molecular weight of a random poly(isobutylene-isoprene) copolymer is known to be 77,630 […]

## In your own words, name two effects of the Digital Millennium Copyright Act (DMCA) that are mentioned in the article.Discuss

Question #1: Give your own single-sentence synopsis of the article. Question #2: Do you think that government has a role in overseeing cryptographic research? Question #3: Do you think that private citizens should be allowed to practice cryptography? Question #4: In your own words, name two effects of the Digital Millennium Copyright Act (DMCA) that […]