Defference between the two sample means

Assignment Help Basic Statistics
Reference no: EM1397033

Two samples, each with n = 10 scores, are selected from the same population. The variance for the first sample is s2 = 40 and the variance for the second sample is s2 = 50. If the null hypothesis is true, then how much difference should be expected, on average, between the two sample means?

a. impossible to determine without additional information

b. 3 points

c. 90 points

d. 45 points

Reference no: EM1397033

Questions Cloud

Population of incomes in a particular community : The population of incomes in a particular community is thought to be highly right-skewed with a mean equal to $36,789 and a standard deviation equal to $2,490.
Calculate the generated number of atps : Calculate the number of ATPs generated from one saturated 18-carbon fatty acid, For this question, assume that each NADH molecule generates 2.5 ATPs,
Confidence interval of the mean number of er patients : Find the 95% confidence interval of the mean number of ER patients treated each day at the hospital.
Three point test cross with genes : If you did a three-point test cross with genes A, B and C, and only genes A and B were linked, what recombinant frequencies would you see for the 3 pairs of genes, AB, AC, and BC
Defference between the two sample means : If the null hypothesis is true, then how much difference should be expected, on average, between the two sample means?
Explain determining the units level of fitness : In determining the units level of fitness, which components of fitness would have best level of train-up on your platoon and what activities would place the extra demand on cardiovascular and respiratory systems?
Describe the movement of water through the nephron : Describe the movement of water through the nephron including a description of the movement of salt and countercurrent multiplication.
Explain health production to diminishing returns : Suppose that health production is subject to diminishing returns and that each unit of health care employed entails the constant rate of iatrogenic (medically caused) disease.
Explain roles and influences of computers : Topic is "The Global Economy" . You will be writing the term paper replying to the following questions? Explain the roles and influences of computers and communications technology in increase of trans-border economic activity.

Reviews

Write a Review

 

Basic Statistics Questions & Answers

  Determining sample size required

The manager requires the estimate to be within 1.0 minutes of the population value. What sample size is needed?

  Computing test statistic to test productivity

To test productivity quickly, he has his shift foremen record number of defective T-shirts made in randomly sampled week. Critical Value: t =Test Statistic (Show procedure.): t =?

  Important information about risk reduction

A person reads a research study of the effectiveness of perineal exercises in preventing urinary incontinence and notes that the number of subjects in each group is 120.

  Beer consumption and religious affiliation

Suppose that beer consumption and religious affiliation are not independent of each other. That means that

  Determining stem and leaf-dot plot

How many observations were in the original data set? In the bottom row of the stem and leaf display identify the stem the leaves and the numbers in the original data set represented by this stem and its leaves.

  Statistics-scale of measurement

Identify the scale of measurement in each of the following:

  Process capability index and performance

A process has a capability index of 0.40. This index is interpreted to mean that the process is:

  Conclusion of population mean

Would it be reasonable to conclude that the population mean is 63 pounds?

  Computing the probability value based on the bayes rule

What is the probability that a student who has failed the test came from the South District?

  Relative frequency approach for probability distribution

Use the relative frequency approach to construct a probability distribution for the number of tests taken.

  Summarize the consumer responses with a frequency table

In a marketing study, 100 consumers were asked to select the best digital music player from the iPod, the iRiver, and the Magic Star MP3. To summarize the consumer responses with a frequency table, how many classes would the frequency table have?

  Explaining strong negative linear relation

For each of following data sets, select the most suitable response from choices below the table. A strong negative linear relation exists.

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