A manufacturer bonds a plastic coating to a metal surface. A random sample of nine observations on the thickness of this coating is taken from a week's output and the thickness (in millimeters) of these observations are shown below. Assuming normality, find a 90% confidence interval for the population variance. 19.4 21.9 18.6 20.9 21.4 19.1 19.4 20.4 20.6 Click the icon to view a table of lower critical values for the chi-squ 1 Lower Critical Values of Chi-Square O Upper Critical Values of Chi-Square E Click the icon to view a table of upper critical values for the chi-squ Find the 90% confidence interval. 0.90 0.95 0.975 0.99 0.999 0.10 0.05 0.025 0.01 0.001 10.828 13.816 1 .016 .004 001 .000 000 1 2.706 3.841 5.024 6.635 211 .103 051 020 .002 4.605 5.991 7.378 9.210 (Round to four decimal places as needed.) 3 .584 352 216 .115 .024 6.251 7.815 9.348 11.345 16.266 4 1.064 .711 484 .297 .091 18.467 20.515 4 7.779 9.488 11.143 13.277 1.610 1.145 831 554 .210 9,236 11.070 12.833 15.086 6. 2.204 1.635 1.237 872 381 12.502 14.067 6. 10.645 14.449 16.812 22.458 7. 2.833 2.167 1.690 1.239 598 7 12.017 16.013 18.475 24.322 3.490 2.733 2.180 1.646 857 1325 2088 8. 13.362 15.507 17.535 20.090 26.125 4168 2700 1152

A manufacturer bonds a plastic coating to a metal surface. A random sample of nine observations on the thickness of this coating is taken from a week's output and the thickness (in millimeters) of these observations are shown below. Assuming normality, find a 90% confidence interval for the population variance. 19.4 21.9 18.6 20.9 21.4 19.1 19.4 20.4 20.6 Click the icon to view a table of lower critical values for the chi-squ 1 Lower Critical Values of Chi-Square O Upper Critical Values of Chi-Square E Click the icon to view a table of upper critical values for the chi-squ Find the 90% confidence interval. 0.90 0.95 0.975 0.99 0.999 0.10 0.05 0.025 0.01 0.001 10.828 13.816 1 .016 .004 001 .000 000 1 2.706 3.841 5.024 6.635 211 .103 051 020 .002 4.605 5.991 7.378 9.210 (Round to four decimal places as needed.) 3 .584 352 216 .115 .024 6.251 7.815 9.348 11.345 16.266 4 1.064 .711 484 .297 .091 18.467 20.515 4 7.779 9.488 11.143 13.277 1.610 1.145 831 554 .210 9,236 11.070 12.833 15.086 6. 2.204 1.635 1.237 872 381 12.502 14.067 6. 10.645 14.449 16.812 22.458 7. 2.833 2.167 1.690 1.239 598 7 12.017 16.013 18.475 24.322 3.490 2.733 2.180 1.646 857 1325 2088 8. 13.362 15.507 17.535 20.090 26.125 4168 2700 1152

Name: A manufacturer bonds a plastic coating to a metal surface. A random s
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: A manufacturer bonds a plastic coating to a metal surface. A random sample of nine observations on the thickness of this coating is taken from a week's output and the thickness (in millimeters) of these observations are shown below. Assumingnormalit

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: A 3-year study was carried out to see if fluoride toothpaste helps to prevent cavities. The…

A: Given data n1=260, x̄1=12.83, s1=8.31, n2=289, x̄2 =9.78, s2=7.51, level of significance=ɑ=0.01

Q: As part of a study of the development of the thymus gland, researchers weighed the glands of five…

A: Given: Data: 26.9, 21.5, 28.0, 34.6, 44.9 n = 5 mean x = 31.7 standard deviation σ = 8.7 Confidence…

Q: The data below are yields for two different types of corn seed that were used on adjacent plots of…

A: Given: First enter this data into Excel

Q: sample of seven containers of fuel have a mean content of 10.0 liters with standard deviation of…

Q: A random sample of 16 pharmacy customers showed the waiting times below (in minutes). 9 12 22 12…

A: From the given data: x¯=20.25s=5.5678n=16 Degree of freedom=n-1=15

Q: A random sample of 16 pharmacy customers showed the waiting times below (in minutes). 15 18 11 22…

A: Given information- Confidence level, c = 90% So, significance level, α = 0.10 Sample size, n = 16…

Q: In Exercises, presume that the assumptions for regression inferences are met.Crown-Rump Length.…

Q: (c) Calculate a two-sided 95% confidence interval for true average degree of polymerization. (Round…

A: An article contained the following observations on degree of polymerization for paper specimens for…

Q: An intemet retaler would e to investigate the relationship between the amount of tme in minutes a…

A: Use EXCEL to obtain the regression equation. EXCEL procedure: Go to EXCEL Go to Data>Data…

Q: Consider the following data for two independent random samples taken from two normal populations.…

A: Solution According to the guidelines we solve only three subparts

Q: Draw a normal curve and label it with the following items for a two-tailed hypothesis. a. Alpha…

A: Given information Two tailed Hypothesis P( Z < -z) +P(Z>z) = 0.05 2P(Z < -z) = 0.05

Q: The following data represent the length of time, in days, to recovery for patients randomly treated…

A: Given information: Medication 1 n1=17 x¯1=10 s12=1.2 Medication 2 n2=12 x¯2=15 s22=1.7

Q: The relationship between "strength" and "fineness" of cotton fibers was the subject of a study that…

A: Given information: Given data represents the values of the independent variable x = Strength and the…

Q: The data below are yields for two different types of corn seed that were used on adjacent plots of…

A: Given Information : The data below are yields for different types of corn seed that were used on…

Q: The table below contains summary statistics about the trading density (sales per square metre, R/m2)…

A: Confidence interval : A confidence interval could be a set of numbers certain on top of associated…

Q: A random sample of 64 automobiles traveling on a section of an interstate showed an average speed of…

A: Solution-: Given: x¯=65,n=64,σ=13.5,c=0.865 We find, The 86.5% C.I. for the μ (in mph)=?

Q: Refer to the table below, the average number of chocolate chips per cookie in two competing…

A: The distributions of chocolate chips, that is obtained for the Brands A and B at the sample level…

Q: A clinic sampled 15 of its patients, based on the sample ,the variance patient waiting time is 16…

Q: A random sample of 16 pharmacy customers showed the waiting times below (in minutes). 16 11 21…

A: Step-by-step procedure to obtain the mean and standard deviation value using the Excel:In Excel…

Q: Use the data file A2Q2.xlsx to answer this question. A sample containing years to maturity and yield…

Q: Given below is a random sample of participants in a weight reduction program. Test if the weight…

Q: The relationship between "strength" and "fineness" of cotton fibers was the subject of a study that…

A: we have give that , data then we calculate mean and standar deviation . n1=10, n2=10 , x1bar=76.1…

Q: A sample of 20 observations shows a sample mean of 290 and a sample standard deviation of 30.…

Q: 1. A researcher is conducting a study to determine the mean trough dosage of medication for a…

A: Margin of error (E): The margin of error for sample mean is given by,

Q: Calcium is essential to tree growth because it promotes the formation of wood and maintains cell…

A: For the given sample values, x¯=0.1574, from the excel function, =AVERAGE(F29:F38)s=0.0849, from the…

Q: Select all that apply Reject the null hypothesis. Fail to reject the null hypothesis.…

A: SolutionLet µ1 be the population mean flight distance of the Lightning, µ2 be the population mean…

Q: 1. A study is run comparing HDL cholesterol levels between men who exercise regularly and those who…

A: The data for men who exercise regularly and those who do not are given below. From the above table:…

Q: The relationship between "strength" and "fineness" of cotton fibers was the subject of a study that…

A: Linear Regression: In the model, the dependent variable Y is the response variable and…

Q: ELF-REVIEW 9-1 The Bun and Run is a franchise fast-food restaurant located in the Northeast…

A: Here as PER POLICY I HAVE CALCULATED CALCULATED MAIN QUESTION 9.1

Q: 1. A company manufactures LCD monitors, which have a lifespan that is approximately normally…

A: The provided information is x¯=180σ=96n=21α=0.05The critical value is zc=1.96 (from statistical…

Q: The following table illustrates the BMI for a number of patients recently enrolled in a study…

A: Obtain the 95% confidence interval for the mean BMI of the population. The 95% confidence interval…

Q: A national survey showed that Hillshire Farm Deli Select cold cuts were priced, on the average, at…

A: Given data : 5.18 5.22 5.25 5.19 5.30 5.17 5.15 5.28 5.20 5.14 5.05 5.19 5.26…

Q: The average yield of grain on 9 randomly picked experimental plots of farm was found to be 150…

A: We have to find confidance interval

Q: (PX) time (in minutes) of college students to write an error-free program (y). Assuming normality of…

Q: The following data show the yearly salaries of football coaches at some state supporteduniversities.…

A: The 90% confidence interval estimate of the variance of the ball bearings in the population is…

Q: In the dataset below 1.15 0.33 0.40 0.33 1.35 0.38 0.25 0.40 0.35 (a) Skewness in the stemplot of…

Q: Use the data file A2Q2.xlsx to answer this question. A sample containing years to maturity and yield…

Q: A manufacturer bonds a plastic coating to a metal surface. A random sample of nine observations on…

A: Given: n=990% confidence interval

Q: A manufacturer bonds a plastic coating to a metal surface. A random sample of nine observations on…

A: Given Dataset is X 19:12 21.7 18.7 20.1 21.6 19.7 19.8 20.7 20.8 sample size=n=9 We need to…

Q: A random sample of 16 pharmacy customers showed the waiting times below (in minutes). 11 25 19 17 24…

Q: R&D department believes that the C-type batteries with a nominal diameter of 2mm will fit properly…

A: Confidence interval formula for Population variance by using chi square χ2 distribution is…

Q: The business manager of a local health clinic is interested in estimating the difference between the…

Q: Six measurements were made of the mineral content (in percent) of spinach, with the following…

A: Since we only answer up to 3 sub-parts. I'll answer the first 3. Please resubmit the question and…

Q: A hotel chain wants to estimate the mean number of rooms rented daily in a given month. The…

A: Solution-; Given: n=25,x¯=370,σ=340,c=90% Find the critical value=?

Q: ocate the following percentile under the normal curve and find its corresponding t-value. Sketch and…

A: The objective is to locate the percentile and find the corresponding t-value. Percentile is the…

Q: A random sample of 16 pharmacy customers showed the waiting times below (in minutes). 15 12 17 17 14…

Q: In a sample of seven cars, each car was tested for nitrogen oxide emissions (in grams per mile). The…

A: Here, sample size = n = 7. Sample mean: x=0.13+...+0.087=0.13 Sample standard deviation:…

Q: The data below are yields for two different types of corn seed that were used on adjacent plots of…

A: Given Information: Sample size (n) = 8 Confidence level = 95% = 0.95 Significance level…

Q: Six measurements were made of the mineral content (in percent) of spinach, with the following…

A: Given information- We have given 6 sample data. Confidence level, c = 99% Significance level, α =…

Q: In a certain type of metal test specimen, the normal stress on a specimen is known to be…

A: Note: As you have posted multiple sub-parts, we have helped you solve the first three parts,…

Topic Video

Question

A manufacturer bonds a plastic coating to a metal surface. A random sample of nine observations on the thickness of this coating is taken from a week's output and the thickness (in millimeters) of these observations are shown below. Assuming
normality, find a 90% confidence interval for the population variance.
19.4
21.9
18.6
20.9
21.4
19.1
19.4
20.4
20.6
Click the icon to view a table of lower critical values for the chi-squa
Lower Critical Values of Chi-Square
i Upper Critical Values of Chi-Square
Click the icon to view a table of upper critical values for the chi-squ
Find the 90% confidence interval.
0.90
0.95
0.975
0.99
0.999
0.10
0.05
0.025
0.01
0.001
1
.016
.004
.001
.000
.000
1
2.706
3.841
5.024
6.635
10.828
<o? <
(Round to four decimal places as needed.)
.211
.103
.051
.020
.002
4.605
5.991
7.378
9.210
13.816
.584
352
216
.115
.024
3
6.251
7.815
9.348
11.345
16.266
4
1.064
.711
484
.297
.091
4
7.779
9.488
11.143
13.277
18.467
1.610
1.145
831
.554
.210
5
9.236
11.070
12.833
15.086
20.515
6.
2.204
1.635
1.237
.872
.381
10.645
12.592
14.449
16.812
22.458
7
2.833
2.167
1.690
1.239
598
7
12.017
14.067
16.013
18.475
24.322
8
3.490
2.733
2.180
1.646
.857
4.168
3.325
2.700
2.088
1.152
8
13.362
15.507
17.535
20.090
26.125
10
4.865
3.940
3.247
2.558
1.479
14.684
16.919
19.023
21.666
27.877
11
5.578
4.575
3.816
3.053
1.834
10
15.987
18.307
20.483
23.209
29.588
12
6.304
5.226
4.404
3.571
2.214
11
17.275
19.675
21.920
24.725
31.264
13
7.042
5.892
5.009
4.107
2.617
12
18.549
21.026
23.337
26.217
32.910
14
7.790
6.571
5.629
4.660
3.041
13
19.812
22.362
24.736
27.688
34.528
15
8.547
7.261
6.262
5.229
3.483
14
21.064
23.685
26.119
29.141
36.123
16
9.312
7.962
6.908
5.812
3.942
15
22.307
24.996
27.488
30.578
37.697
17
10.085
8.672
7.564
6.408
4.416
16
23.542
26.296
28.845
32.000
39.252
18
10.865
9.390
8.231
7.015
4.905
19
11.651
10.117
8.907
7.633
5.407
17
24.769
27.587
30.191
33.409
40.790
20
12.443
10.851
9.591
8.260
5.921
18
25.989
28.869
31.526
34.805
42.312
21
13.240
11.591
10.283
8.897
6.447
19
27.204
30.144
32.852
36.191
43.820
22
14.041
12.338
10.982
9.542
6.983
20
28.412
31.410
34.170
37.566
45.315
23
14.848
13.091
11.689
10.196
7.529
21
29.615
32.671
35.479
38.932
46.797
24
15.659
13.848
12.401
10.856
8.085
22
30.813
33.924
36.781
40.289
48.268
25
16.473
14.611
13.120
11.524
8.649
23
32.007
35.172
38.076
41.638
49.728
26
17.292
15.379
13.844
12.198
9.222
24
33.196
36.415
39.364
42.980
51.179
27
18.114
16.151
14.573
12.879
9.803
25
34.382
37.652
40.646
44.314
52.620
28
18.939
16.928
15.308
13.565
10.391

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 3 images

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.

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc