User Account

All Pages

Difference in memory performance

Assignment Help Basic Statistics
Reference no: EM132173832

A researcher believes that length of time spent listening to classical music increases memory for previously learned material. She has 4 groups of 5 subjects listen to either 10 min., 20 min, 30 min, or 40 min. of Mozart symphonies, then tests their recall memory for a list of words they previously attempted to memorize. The mean number of words recalled by each group is given below:

10min.  M = 6.5            20min. M = 7.75           30min M = 8.5              40min. M = 8.5

SS within = 31.75             SS between = 10.69

At the α = .05 level, do these data indicate that there is a difference in memory performance based on how long people listen to Mozart? If so, which listening times do better than which other ones?

Reference no: EM132173832

Questions Cloud

Compute and returns the natural logarithm of the gamma : Implement a fucntion that computes and returns the natural logarithm of the gamma value of a positive integer that uses recursion instead of a for loop
Percentages in product : Another experiment that the earlier statistics class did was to count M&M's (okay, so this isn't biology). M&M's claim the following color percentages in their
A program which uses a recursive function to compute series : Using Python, write a program which uses a recursive function to compute the series.
How many ways can these companies make their selections : How many ways can these companies make their selections from a team with 25 players?
Difference in memory performance : At the a = .05 level, do these data indicate that there is a difference in memory performance based on how long people listen to Mozart?
Write a function that takes a string text as a parameter : Write a function named symmetry that takes a string text as a parameter and return a dictionary d.
Find the proportion of consumers : 1.You would like to conduct a survey to find the proportion of consumers who bought the newest uPhone X were happy with their purchase.
Find the probability that a randomly selected mobile : Find the probability that a randomly selected mobile phone of this brand will last at least 2 years but less than 3 years.
Write a function that given a character returns true : Write a function that given a character returns true if it is a letter otherwise returns false.

Reviews

Write a Review

Basic Statistics Questions & Answers

  In order to improve the signal transmitted reliablity the

1. when an engineer wants to send a binary signal a 0 or 1 signal through a communication channel assume that there is

  Probabilities-standard normal distribution

Assume the body temperatures of healthy adults are normally distributed with a mean of 98.20°F and a standard deviation of 0.62°F (based on data from the University of Maryland researchers).

  Normal distribution with a mean

We have a normal distribution with a mean of 71 and a standard deviation of 11

  Calculate the sample variance and standard deviation

Calculate the sample variance and standard deviation for this data (since it is a case of grouped data- use group or class midpoints in the formula

  The selling prices in thousands of dollars for a sample of

question the selling prices in thousands of dollars for a sample of 15 recreational vehicles sold by getaway rvs and

  Is there sufficient evidence to indicate that the mean

the weights of a fish in a certain pond that is regularly stocked are considered to be normally distributed with a mean

  Computing f-statistic for linear construct

Compute an F-statistic for each linear construct and determine its significance. Also, state what questions each of these contrasts address.

  Housing cost index and the median family income by state

Describe the relationship between the Housing Cost Index and the Median Family Income by state.- If we standardized both variables, what would the correlation coefficient between the standardized variables be?

  What is the z-score that corresponds

What is the z-score that corresponds to the 22.66th percentile when a sample data has a mean of 72 and a standard deviation of 8?

  What is the form and strength of the association

Make a scatterplot of these data if you have not already done so. What is the form, direction, and strength of the association? Are there any outliers?

  Test claim distribution-first nonzero digits-benford-s law

Use a 1% level of significance to test the claim that the distribution of first nonzero digits in the account file does not follow Benford's Law.

  What is the probability that three changed for pay reasons

An article published in BusinessWeek says that according to a survey by a leading organization 45% of managers change jobs for intellectual challenge.

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