Explain in context what statistically significant means

Assignment Help Basic Statistics
Reference no: EM131402015

Cell phone risks

Researchers at the Washington University School of Medicine randomly placed 480 rats into one of three chambers containing radio antennas. One group was exposed to digital cell phone radio waves, the second to analog cell phone waves, and the third group to no radio waves. Two years later the rats were examined for signs of brain tumors. In June 2002 the scientists said that differences among the three groups were not statistically significant.

a) Is this a study or an experiment? Explain.

b) Explain in this context what statistically significant means.

c) Comment on the fact that this research was supported by funding from Motorola, a manufacturer of cell phones.

Reference no: EM131402015

Questions Cloud

What is the importance of teacher role in the child life : In 250 words what is the importance of the teacher's role in the child's life. Give examples of how the school and the teacher will affect the child's socialization
Describe how randomness is or is not achieved in each : Aside from casinos, lotteries, and games, there are other situations you encounter in which something is described as random in some way.- Give three different examples. Describe how randomness is (or is not) achieved in each.
The social responsibility of business is to increase profits : In 1970, Milton Friedman wrote an article titled "The Social Responsibility of Business is to Increase its Profits" that sparked a debate about corporate responsibility that remains heated to this day. Read the Schwartz and Saiia article, "Should ..
Liquidating long-term assets : Explain why a firm might be reluctant to meet its short-term liquidity needs by liquidating long-term assets.
Explain in context what statistically significant means : Explain in this context what statistically significant means.- Comment on the fact that this research was supported by funding from Motorola, a manufacturer of cell phones.
Financial analysis of the three different sites : Conduct research on at least three reputable online job sites in the USA and provide financial analysis of the three different sites individually and independently. the report should be in APA style.
What is his profit or loss by an accountant’s definitions : By working in the firm, though, Economan forfeits the $50,000 he could earn by working for the Friendly Space Agency and the $4,000 he could have earned as interest had he saved his funds instead of putting them in this business.
How does inequality affect these life chances : Considering the basic assertions of the Davis/Moore functionalist theory of social stratification discuss the argument that simply says that rewards reflect one's skills and credentials as well as the importance of one's job
What is the weight percent of copper in chalcopyrite : What is the weight percent of copper in chalcopyrite? Which would contain more copper-a hundred kilograms (kg) of chalcopyrite or 100 kg of chalcocite?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Statistics-probability assignment

MATH1550H: Assignment:  Question:  A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..

  What is the least number

MATH1550H: Assignment:  Question:     what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?

  Determine the value of k

MATH1550H: Assignment:  Question:     Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form

  What is the probability

MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?

  Binomial distributions

MATH1550H: Assignment:  Questions:  Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.

  Caselet on mcdonald’s vs. burger king - waiting time

Caselet on McDonald’s vs. Burger King - Waiting time

  Generate descriptive statistics

Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.

  Sampling variability and standard error

Problems on Sampling Variability and Standard Error and Confidence Intervals

  Estimate the population mean

Estimate the population mean

  Conduct a marketing experiment

Conduct a marketing experiment in which students are to taste one of two different brands of soft drink

  Find out the probability

Find out the probability

  Linear programming models

LINEAR PROGRAMMING MODELS

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd