Computing sample mean-standard deviation

Assignment Help Basic Statistics
Reference no: EM1391530

Consider the following data for two independent random samples taken from two normal populations.

Sample 1 10 7 13 7 9 8

Sample 2 8 7 8 4 6 9

a. Compute the two sample means.

b. Compute the two sample standard deviations.

c. What is the point estimate of the difference between the two population means?

d. What is the 90% confidence interval estimate of the difference between the two population means?

Reference no: EM1391530

Questions Cloud

What is the objective function : Let x1 be the number of units to make and x2 be the number of units to buy. If it costs $1.5 to make a unit and $4 to buy a unit and 4,000 units are needed, what is the objective function?
Calculation of reorder point : The president of the wholesale distributor is concerned about the possibility of stockouts causing a loss of customer confidence and loyalty and is interested in maintaining safety stock in inventory to prevent potential stockouts.
Standard deviation of sample mean : A study of the amount of time it takes a mechanic to rebuild the transmission for a 1992 Chevrolet Cavalier shows that the mean is 8.4 hours and the standard deviation is 1.8 hours.
Importance of marketing to organizational success : Write down the five to six page paper which addresses the following. Create the argument regarding importance of marketing to organizational success in 21st century.
Computing sample mean-standard deviation : Consider the following data for two independent random samples taken from two normal populations. What is the 90% confidence interval estimate of the difference between the two population means?
What combination of x and y will provide : What combination of x and y will provide a feasible solution and a minimum objective function value for the following problem
Explain effective leaders both learn from past : Effective leaders both learn from past and are able to adjust what they have learned to present context. In paper, explain how you, as leader or potential leader in professional or community context.
Hereditary material avery : As you know Griffiths, and Avery, MacLeod and McCarty 1st experimented with the concepts of lateral gene transfer in bacteria as it relates to transformation.
Developing the drug and obtaining fda approval : Despite strong sales and a low marginal cost of producing the product, your company has yet to show a profit from selling the drug.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Probability based on bivariate normal distribution

Suppose that a model for the joint distribution of these rvs is a bivariate normal distribution.

  Hypothesis testing with one way anova

At the .05 significance level, can she conclude that there is a difference in the mean amount of weight loss among the three diets?

  Adding line-of-best fit to scatterplot

Add line-of-best fit (trend line/linear regression line) to your scatterplot.  Write down the equation of the trend line below.

  P-value for testing ho versus ha

Using the sample information given in the above exercise, the p value for testing Ho versus Ha can be calculated to be 0.0057

  Explaining probability distribution of data

Explain probability distribution of X (name and parameters).

  Hypotheses of studying for final exams

It is believed that students who begin studying for final exams a week before the test score differently than students who wait until the night before. Suppose you want to test specifically that students who study earlier have an average score tha..

  Theoretical probability and experimental probability

Comparing the experimental and theoretical probabilities, can you say the die used in this experiment is a fair die? Why or why not?

  A psychologist theorized where people can hear

Utilizing the .05 level, do the results support the psychologists' theory. A psychologist theorized where people can hear better when they have just eaten a large meal.

  Two-sample independent t-test and paired test

Determine what analysis would you do on each problem (i.e., one-sample z-test, one-sample t-test, proportion test, two-sample independent t-test, or paired test)?

  Generate a scatterplot with the linear regression line

A researcher selects a random example of college students and measures number of hours they spend watching television per week and their grade point average.

  Confidence interval for the mean amount a citation

To findout 95 percent with confidence interval for the mean amount a citation. Police Chief Aaron Ard of River City reports 500 traffic citations were issued last month.

  Describing potential problems of analysis

Variance of 4.2 and mean of 23.2 were calculated. Find out 95% confidence interval on mean and standard deviation. Describe any potential problems with this analysis.

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