2. Using summary statistics in question 6, find the 98% confidence interval for the difference of mean fabricstrengths for the two types using a pooled interval. Interpret your answer. 6. The maintenance cost (y in dollars) and the age of (x in years) of nine cash registers in a department storeis given in the following table.sum71354292181234012635867251Xya. Complete the above table and find the sum of each row.b. Draw the scatter plot. Is there a linear trend?200150с.Find the S, Sw, and Swy.у 1005010d. Find the Pearson's correlation coefficient.

Standard deviation for sample X: Standard Deviation, s: 2.121 Count, N: 9 Sum, Σx: 36 Mean,…

Answered: 2. Using summary statistics in question…

2. Using summary statistics in question 6, find the 98% confidence interval for the difference of mean fabric strengths for the two types using a pooled interval. Interpret your answer.

College Algebra (MindTap Course List)

12th Edition

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter8: Sequences, Series, And Probability

Section8.7: Probability

Problem 58E: What is meant by the sample space of an experiment?

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Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

6. The maintenance cost (y in dollars) and the age of (x in years) of nine cash registers in a department store
is given in the following table.
sum
7
1
3
5
4
2
92
181
23
40
126
35
86
72
51
Xy
a. Complete the above table and find the sum of each row.
b. Draw the scatter plot. Is there a linear trend?
200
150
с.
Find the S, Sw, and Swy.
у 100
50
10
d. Find the Pearson's correlation coefficient.

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