The pooled variance is 30.68. Calculate the individual estimated variance for population 1 and population 2. StylesIn a cognitive psychology experiment, the researcher is interested in whether the encoding conditionhas a significant effect on memory for a set of drawings. In encoding condition A, subjects are asked toname the object in each drawing; in encoding condition B, subjects are asked to name the color of eachdrawing. Then all subjects are tested on their memory of the drawings. Each recruited subject israndomly assigned to either encoding condition A or encoding condition B.Based on memory theories, the researcher hypothesized that condition A (object naming) would lead tosignificantly better memory compared to condition B (color naming), and she sets the significance levelat a = .01 for a one-tailed test.Hint: You may remember a similar scenario in the previous assignment, but with a crucial difference. Inthe previous assignment, each subject is tested in BOTH condition A and condition B, while each subjecthere is tested in only ONE condition (either A or B).SubjectID123456789101112EncodingA778290789283918791798592SubjectID131415161718192021222324EncodingB868380779190887787768489

Formula of estimated variance (s2) is given by Sample variance (s2)=∑xi-x2n-1…

Answered: The pooled variance is 30.68. Calculate…

Math

Statistics

The pooled variance is 30.68. Calculate the individual estimated variance for population 1 and population 2.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: In a series of 5 observations, the values of mean and variance are 4.4 and 8.24. If three…

A: It is given that the mean and standard deviation are 4.4 and 8.24.

Q: A company gives the variance in their production of a particular part as 0.051cm. Use the sample…

A: Given: σ02=0.051cmn=32s2=0.08 the significance level is taken as 0.05.

Q: Suppose a population has three values 13, 17 and 24. What is its variance?

A: Given: n=3 The mean of the data is obtained as below: Mean=∑xn=13+17+243=543=18 The mean is 18.

Q: In a series of 5 observations, the values of mean and variance are 4.4 and 8.24. If three…

Q: Calculate the variance products sold per store using this sample data 0, 77, 38, -5, 44, 62

A: Given data is,0, 77, 38, -5 , 44, 62sample size(n)=6

Q: Find the standard error, t statics Sample variance = .67 Sample size = 30 Population size = 60…

A: Given information- Sample variance, s2 = .67 So, sample standard deviation, s = 0.819 Sample size, n…

Q: Suppose when a data set with 32 values is treated as a "population", the value of the (population)…

A: Given that Population Variance = 145.2 n = 32

Q: Perform the analysis of variance (ANOVA) at the 5% significance level to identify is there any…

A: Excel Procedure: Enter the data for 1, 2, 3 in Excel sheet>Go to Data Menu>Click on Data…

Q: There are four brothers in a family. Their ages are 7 years,10 years,15 years, and 21 years.…

A: From the provided information, Sample size (n) = 4 The data values are as follow: 7, 10, 15, 21

Q: Find mean, sample variance, SD and CV for the following data. 20, 25, 35, 30, 40, 45, 35

Q: If 50 and 70 are the two elements of a population data set and their z-scores are -2 and 3,…

A: For X=50, Y=70 Z score= -2 and 3 for point X and Y

Q: Calculate Median, Q1, Q3 and IQR, sample mean, sample variance, and sample standard deviation for…

A: Given: data 48, 92, 47, 44, 94, 18, 95, 67, 74, 64

Q: Calculate the weighted mean for sample 1 and sample 2. Sample 1 has 24 scores with a mean of M =…

Q: What formula is used to calculate the sample variance?

Q: Which of the following data sets would have the smallest variance? 700 701 702…

A: The question is about measures Introduction : Variance - A variance is nothing but mean of sq.…

Q: In analysis of variance, the F-ratio is a ratio of a. Two mean squares b. Two or more sample…

A: In this case, we need to identify the correct option for the given question.

Q: Calculate the standard deviation, variance and co-efficient of variance of the following data. 45,…

A: The given data is, 45 32 37 46 39 36 41 48 36

Q: Given the data 4 7 10 13 17 21 24, Find: 1. sample mean 2. sample variance 3. sample standard…

Q: In a test of hypothesis, the null hypothesis is that the population variance is equal to 4 and the…

A: The given information for the hypothesis test is as follows:Null Hypothesis H0: The population…

Q: Compute the population variance of the data: 16,18,23,21,17,16,24,23,9,17,11,16,22,10,15,14. A.…

A: σ2= ∑(xi-x¯)2n

Q: What is the population variance and standard deviaition of the following data? 3, 6, 10, 12, 14

Q: Find the population variance for the following data set: 13,23,26,17,21

A: Given data set: 13,23,26,17,21

Q: Given the sample data 6 10 12 12 11 17 9. Use the definition of sample variance to find the…

Q: find population variance for given data 89,63,35,45,75,84,21,24,56,85,99

Q: The difference between a sample mean and its parameter is called: a. sampling error b. a biased…

A: The difference between the value of the sample statistic and the value of the corresponding…

Q: What is the variance of the following data( 1, 2, 3, 4, and 5)?

A: According to the given information in this question We need to calculate the value of variance

Q: compute the range, variance, and standard deviation for the two samples

A: The Data is given as: Atlanta(x) Salt Lake City(y) 340.1 570.1 321.6 354.6 291.6 465.6…

Q: How do you determine the coefficient of determination (R^2) for a multiple linear regression model?

A: Coefficient of Determination R2: The coefficient of determination is the proportion of dependent…

Q: Calculate the variance and standard deviation of the sample data set below. 15, 21, 13, 9, 6…

A: 1. The sample mean is, x¯=∑xn=15+21+13+9+65=645=12.8 The sample variance is,…

Q: The variance of a population is 5. The size of the sample collected from a population is 225. What…

A: Answer: From the given data, Variance (σ2) = 5 ⇒Standard deviation (σ) = Variance = 5…

Q: Calculate the population coefficient of variation for the following data 12, 9, 7, 10,…

A: From the provided information, The mean and standard deviation of data can be obtained as:

Q: Find the moment generating function MU(t) for the standard uniform random variable U (the continuous…

Q: Assume the population variances are equal. A teacher wants to determine whether the mean scores for…

Q: Calculate the mean and variance of the following population: 60, 72, 40, 60, 88. Mean: Variance:

Q: Use the magnitudes (Richter scale) of the 120 earthquakes listed in the accompanying data table.…

A: Here given the data of magnitudes of 120 earthquakes. need to find the range variance and standard…

Q: Given mean = 50, median = 48 and coefficient of skewness = 1. Find the value of the variance

A: A measure of central tendency is a single value that attempts to describe a set of data by…

Question

The pooled variance is 30.68. Calculate the individual estimated variance for population 1 and population 2.

Styles
In a cognitive psychology experiment, the researcher is interested in whether the encoding condition
has a significant effect on memory for a set of drawings. In encoding condition A, subjects are asked to
name the object in each drawing; in encoding condition B, subjects are asked to name the color of each
drawing. Then all subjects are tested on their memory of the drawings. Each recruited subject is
randomly assigned to either encoding condition A or encoding condition B.
Based on memory theories, the researcher hypothesized that condition A (object naming) would lead to
significantly better memory compared to condition B (color naming), and she sets the significance level
at a = .01 for a one-tailed test.
Hint: You may remember a similar scenario in the previous assignment, but with a crucial difference. In
the previous assignment, each subject is tested in BOTH condition A and condition B, while each subject
here is tested in only ONE condition (either A or B).
Subject
ID
1
2
3
4
5
6
7
8
9
10
11
12
Encoding
A
77
82
90
78
92
83
91
87
91
79
85
92
Subject
ID
13
14
15
16
17
18
19
20
21
22
23
24
Encoding
B
86
83
80
77
91
90
88
77
87
76
84
89

Expert Solution

Formula :

Formula of estimated variance (s²) is given by

$S a m p l e v a r i a n c e (s^{2}) = \frac{\sum_{}^{} {(x_{i} - x)}^{2}}{n - 1}$

Where, x_i is the set of data

x^- is the mean of set

n is the number of samples in the set

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Similar questions

find the sample variance and standard deviation 20, 10, 2, 06, 08
Suppose that the variance of the sample mean is equals 25 and the sample size is 6 . then the population variance is
Calculate the variance for the following dataset: 15 17 17 5 5
7.Which of the values below is closest to the IQR for a normally distributed population with a variance of 36? chosse one: 5,6,7,8,9
Consider the following data: −10, −10, 0, 3, −10, 3, 3 Step 1 of 3: Calculate the value of the sample Variance. Round your answer to one decimal place. Step 2 of 3: Calculate the value of the sample deviation. Round your answer to one decimal place. Step 3 of 3: Calculate the value of the range.
Given a sample data set with a Variance of 12.25 and Mean of 4.0, what is the Coefficient of Variation of the data set.?
To get an unbiased sample variance, we divide by instead of which would give us a estimate of the variance.
Download the dataset, SummaryStats.xls. Use Excel to calculate the SAMPLE VARIANCE of H. (Round to two decimals.) 399,453,302,468,27,268,165,418,339,154,409,283,31,223,268,393,81,97,84,103,229,3,64,403,118,396,279,93
The coefficient of variation (CV) measures the dispersion of the data relative to the sample mean. Suppose the sample mean of a particular variable is 550 and the sample variance is 6400. What is the CV? O 32.6% O 1.163.6% O 10.7% O 14.5%
what is the variance of the mean squared errors for this data set
Erin is married to Glen Mills. Erin earns an income of 500. Glen earns 400. Glen and Erin live with their two dependent children who earn no income. Vaughan lives alone and earns an income of 100. 1. Statistics Canada would report the variance in income for this population is equal to? 2. Statistics Canada would report the range of incomes for this population is equal to?