User Account

All Pages

Existence of a linear correlation

Assignment Help Basic Statistics
Reference no: EM13968591

The following data are indexed prices of gold and copper over a 10-year period. Assume that the indexed values constitute a random sample from the population of possible values. Test for the existence of a linear correlation between the indexed prices of the two metals.

Gold: 76, 62, 70, 59, 52, 53, 53, 56, 57, 56

Copper: 80, 68, 73, 63, 65, 68, 65, 63, 65, 66

Also, state one limitation of the data set.

Reference no: EM13968591

Questions Cloud

Linear relationship between returns and book to market value : A regression analysis was carried out of returns on stocks (Y) versus the ratio of book to market value (X). The resulting prediction equation is Y = 1.21 + 3.1X (2.89) where the number in parentheses is the standard error of the slope estimate. The ..
Explain how the data will be physically collected. : Calculate the sample size for the mean or sample or sample size for the proportion, using a 95% confidence level, estimated population standard deviation or estimate of the true population proportion, and a 5% margin of error. Place the calculatio..
Describe to the american people as part of an ongoing effort : Describe the characteristics of the crime you believe to be the most difficult to address: prevalence, trends, costs, etc. Be specific in presenting information on this crime.
Compute the sample correlation coefficient : Follow daily stock price quotations in the Wall Street Journal for a pair of stocks of your choice, and compute the sample correlation coefficient.
Existence of a linear correlation : The following data are indexed prices of gold and copper over a 10-year period. Assume that the indexed values constitute a random sample from the population of possible values. Test for the existence of a linear correlation between the indexed pr..
What are advantages & disadvantages of political influence : Is the shaping of public opinion by external influences good or bad for effective financial policy implementation? Why or why not?
Proportion of defective items : When sampling is done for the proportion of defective items in a large ship- ment, where the population proportion is 0.18 and the sample size is 200, what is the probability that the sample proportion will be at least 0.20?
What are the positive and negative tradeoffs : What quality systems and procedures and systems should Toyota have followed to ensure that faulty automobiles are not delivered to the customers?
Problem regarding the population with standard deviation : When sampling is from a population with standard deviation C = 55, using a sample of size n = 150, what is the probability that X will be at least 8 units away from the population mean µ,?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Interpret making a type one error and type two error

Very satisfied customers give the XYZ-Box video game system a rating that is at least 42. In the context of this situation, interpret making a Type I error; interpret making a Type II error.

  Correlation and causation in multiple regression

Consider the relationship between yearly wine consumption (litres of alcohol from drinking wine per person) and yearly deaths from heart disease (deaths per 100,000 people) in 19 developed countries.

  Are the events employed and unemployed mutually exclusive

question the following table gives a two-way classification based on gender and employment status of the civilian

  Use the appropriate hypothesis test to examine whether

the scholastic aptitude test sat is standardized to be normally distributed with a population mean of 500. a parent is

  What is the probability all five men survive the year

Brooks Insurance Inc. wishes to offer life insurance to men age 60 via the Internet. What is the probability all five men survive the year? What is the probability at least one does not survive?

  Random variable with expected value

A sequence of n independent sample pH determinations will be made. Suppose each sample pH is a random variable with expected value m and standard deviation .1.

  Determine experiments to want a lower-level

Researchers routinely choose an -level of 0.05 for testing their hypotheses. What are some experiments for which you might want a lower -level (e.g. 0.01)?

  Probability that exactly half consume caffeine and smoke

Suppose that 40% of participants consume caffeine and smoke. If 8 participants are evaluated, what is the probability that: Exactly half of them consume caffeine and smoke?

  An air conditioning as well as heating repair firm conducted

Estimate the values using multiple regression models. An air conditioning as well as heating repair firm conducted a study to determine if the outside temperature, Illustrate the forecasted monthly electric bill.

  Bivariate normal conditional calculation

Suppose the systolic blood pressure X and fasting blood sugar Y are jointly distributed as bivariate normal in some population with means 120 and 105, standard deviations 10 and 20, and correlation 0.7. Find the average fasting blood sugar of thos..

  Introduction to hypothesis testing

State the claim mathematically. Then write the null and alternative hypothesis. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed.

  Determining interpretation of anova results

An occupational health study was carried out to evaluate the health status of workers. The response is forced expiratory volume (FEV), a measure of respiratory function

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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