Find whether variables are normally distributed or not

Assignment Help Basic Statistics
Reference no: EM13112706

1. What if the size for each sample were increased to 20? Would a sample mean of 115 or more be considered unusual? Why or why not?

2. Why is the Central Limit Theorem used?

3. Consider situations in your work or home that could be addressed through a continuous probability distribution. Describe the situation and the variables and determine whether the variables are normally distributed or not. How could you change these to a normally distributed dataset?

Reference no: EM13112706

Questions Cloud

Create a pareto chart representing information : Humanities, 372; Natural Science, 415; Social Science, 511; Business Administration, 619; Philosophy, 196. Create a Pareto chart representing this information.
Determine the order of the genes on the chromosome : Arrange the genotype in the table, define the origin(parental, single cross-over progeny and double-crossover progeny) and determine the order of the genes on the chromosome.
Illustrate what is her portfolio beta : If these are the only two investments in her portfolio, illustrate what is her portfolio's beta? Round your answer to two decimal places.
Determine the partial pressure of neon : A mixture of helium and neon gases is collected over water at 28.0 C and 745 mmHg. if the partial pressure of helium is 368 mmHg, what is the partial pressure of neon?
Find whether variables are normally distributed or not : Describe the situation and the variables and determine whether the variables are normally distributed or not. How could you change these to a normally distributed dataset?
Can apparant agency be created by silence : Illustrate what steps can an industry take to protect itself against the creation of apparent agencies? Can apparant agency be created by silence?
Why breathing faster helps to eliminate excess lactic acid : When too much H2CO3 is in the blood, the enzyme carbonic anhydrase catalyzes the conversion of carbonic acid, H2CO3, to carbon dioxide, CO2, and water, H2O.
With a rigid exoskeleton how does an arthropod grow : In aquatic gas exchange across gills, how does countercurrent exchange improve the uptake of O2 that otherwise would be lost with concurrent exchange?
Calculate the length of animalcules : Anton Von L. a 17th century pioneer in the use of the microscope, described the microrganisms he saw as "animalcules" whose length was "25 thousandths of an inch."

Reviews

Write a Review

Basic Statistics Questions & Answers

  Politician advisors estimating proportion

The politician's advisors estimated the proportion supporting her fiscal policy to be .60. How large of a sample is required?

  Statement regarding a nonparametric test

Which of the following statements is true regarding a nonparametric test? We assume that the data has been chosen from a normally distributed population

  What is the probability that a student would complete

Assume that the class has 60 students and that the examination period is 90 minutes in length. How many students do you expect will be unable to complete the exam in the allotted time.

  Stocks-risk and expected returns

Stock A has an expected return of 12% and a standard deviation of 40%. Stock B has an expected return of 18% and a standard deviation of 60%. The correlation coefficient between Stocks A and B is 0.2.

  Information reagrding probability tree

A metropolitan school system consists of three school districts-norths, south, central. The north district contains 25% of all students, the south district contains 40%, and the central district contains 35%.

  Normal approximation to binomial probability

How would you find the normal approximation to the binomial probability P(x = 5) in part A? Please show how you would calculate µ and σ in the formula for the normal approximation to the binomial, and show the final formula you would use without g..

  Determining weighted mean of investment

According to the Scranton Edison Company, utility-plant investment per employee was approximately $453,300; $492,400; $498,900; $531,900; $553,900;

  Testing equality of means of two populations

Find a dataset: approximately 30-100 scores or observations. Write a null and alternative hypothesis, conduct a statistical significance test (in SPSS or Excel), and tell what decision you'd make about the null hypothesis, and why.

  Random variable representing a test score

Let x be a random variable that represents a test score. What is the lowest score that would still place a student in the top 40% of the scores?

  Mean amount of time corporation executives watch television

A survey is being planned to determine the mean amount of time corporation executives watch television. A pilot survey indicated that the mean time per week is 20 hours, with a standard deviation of 5.5 hours

  Association between two variables using chi-square

Calculate chi-square for the cross-tab. Show your work. Is there a statistically significant relationship between these variables?

  Variation in expected probabilities

Conceptually we would expect the probability of newborn males and females to be the same. However, census reports indicate that the ratios of males and females in various countries do not conform to the theoretical prediction.

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