2)Need:Difference of meansStandard errorTest statistic Degrees of freedomP-value These selections will result in SALT drawing a histogram of the ages of patients who did not develop SSI and ahistogram of the ages of the patients who did develop SSI.Scroll further down the page to see the Summary Table below the graphs. Here is where SALT displays thesample mean age and standard deviation for the two patient groups.Enter the mean age and standard deviation for these two groups in the table, rounded to three decimalplaces.Surgical Site Infection (SSI)Sample SizeMean AgeStandard deviationNo Infection2,67852.45652.45616.89116.89124153.82853.82815.85215.852Yes InfectionPart 3 of 6We need to verify the assumptions for using the two-sample t test for comparing two population means toanalyze this dataset.First, the two samples must be independent and randomly selected. The data were collected from 2,919surgeries and we have no reason to believe that this sample is not representative of the population of patientwho undergo this type of surgery and since a patient will either develop a surgical site infection or will notdevelop one, the two groups are independent. This indicates that the first assumption has beenhas been met.Second, the sample sizes generally should be 30 or larger. We have 2,678 patients with no SSI and 241patients with SSI. This indicates that the second assumption has beenhas been met. = mean Age of patients who do not develop SSI= mean Age of patients who do develop SSIH21-H2#1-2=0Use a significance level of a = 0.05.Part 5 of 6Recall our hypotheses and summary statistics.= 0Surgical Site Infection (SSI)Sample SizeMean AgeStandard deviationNo Infection2,67852.45616.891Yes Infection24153.82815.852In SALT click an the "Inferential Statictics" age

Name: 2)Need:Difference of meansStandard errorTest statistic Degrees of free
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: 2)Need:Difference of meansStandard errorTest statistic Degrees of freedomP-value These selections will result in SALT drawing a histogram of the ages of patients who did not develop SSI and ahistogram of the ages of the patients who did develop SSI.S

Denote μ1, μ2 as the population mean ages of patients who do not develop SSI and develop SSI,…

Answered: = mean Age of patients who do not…

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

Topic Video

Question

2) Need: Difference of means Standard error Test statistic Degrees of freedom P-value

These selections will result in SALT drawing a histogram of the ages of patients who did not develop SSI and a
histogram of the ages of the patients who did develop SSI.
Scroll further down the page to see the Summary Table below the graphs. Here is where SALT displays the
sample mean age and standard deviation for the two patient groups.
Enter the mean age and standard deviation for these two groups in the table, rounded to three decimal
places.
Surgical Site Infection (SSI)
Sample Size
Mean Age
Standard deviation
No Infection
2,678
52.456
52.456
16.891
16.891
241
53.828
53.828
15.852
15.852
Yes Infection
Part 3 of 6
We need to verify the assumptions for using the two-sample t test for comparing two population means to
analyze this dataset.
First, the two samples must be independent and randomly selected. The data were collected from 2,919
surgeries and we have no reason to believe that this sample is not representative of the population of patient
who undergo this type of surgery and since a patient will either develop a surgical site infection or will not
develop one, the two groups are independent. This indicates that the first assumption has been
has been met.
Second, the sample sizes generally should be 30 or larger. We have 2,678 patients with no SSI and 241
patients with SSI. This indicates that the second assumption has been
has been met.

= mean Age of patients who do not develop SSI
= mean Age of patients who do develop SSI
H2
1-H2
#1-2=0
Use a significance level of a = 0.05.
Part 5 of 6
Recall our hypotheses and summary statistics.
= 0
Surgical Site Infection (SSI)
Sample Size
Mean Age
Standard deviation
No Infection
2,678
52.456
16.891
Yes Infection
241
53.828
15.852
In SALT click an the "Inferential Statictics" age

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Hypothesis Tests and Confidence Intervals for Means$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions