AlignmentFontClipboardfeL2EG.H.KA.C DProblem: Customers are complaining about sandwich leagthYou are the owner of three local sandwich shops. Recently you've received complaints fromcustomers that their "footlong" sub sandwiches were les than 12 inches long. As a measure of1quality assurance, data was collected on all footlong sub sondwiches made over the pcriod of anhour at cach store. Determined which, if any, of your stores are making sub sandwiches that aresignificantly shorter than 12 inches. You will conduct three t-tests, one for coch store. You want46.to be 95% confident in your recults. (Note. This case is inspired by reality. Scarch the internet for"claims over footlong sub' for a historical perspective and how a company used statistics toincure consistent quality.)171011 SandwicL Measuremeat:12 Store 1 Store 2 Store 3StatisticsStore 1 Store 2 Store 3138.83.19.0Somple SizeMean (length)1411.411.612.51513.413.415.1VarianceStandard Deviation1611.311.414.31710.110.310.81812.412.4Hypothesized Mean (M)Difference in Means (X - M)Stondard Error13.81910.410.611.2208.99.23.12110.411.1T-Statistic2211.814.0Degrees of Frcedom2312.814.3249.38.7P-value P(T=t) two-tail2512.613.7"Remomberthat the T.DIST.2T) Function requiror the t-statirkic arqumont ta be an abralute value, nat a noqativo value,2611.712.92711.813.0or an orror uill occur.283.710.22912.614.1308.6Interpret the Reselts8.61. What is the null hypothesis for these teste?2. What is the alternative hypothesis for these teste?3. Given the desired confidence level, whst alpha should be used?4. Can you say with 95% confidence that Store 1 is producing sub3114.6[select][select]3211.033[select]34candwiches with an average length that is less than 12 inchcs?5. Can you say with 95% confidence that Store 2 is producing sub35[select]36sandwiches with an average length that is less than 12 inches?6. Con you say with 95% confidence that Store 3 is producing subcondwiches with an average length that is less than 12 inches?37[sclect]3839[sclect]GlossaryCase 1Case 2Sandwich ShopReadyP Type here to search耳|

Name: AlignmentFontClipboardfeL2EG.H.KA.C DProblem: Customers are complaini
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: AlignmentFontClipboardfeL2EG.H.KA.C DProblem: Customers are complaining about sandwich leagthYou are the owner of three local sandwich shops. Recently you've received complaints fromcustomers that their "footlong" sub sandwiches were les than 12 inc

We are asked to conducted three t-tests for each store. The objective is to test if your stores are…

Math

Statistics

Problem: Cestomers are complaining about sandwich leagth You are the owner of three local sondwich shops. Recently you've received complaints from customers that their "footlong" sub sandwiches were less than 12 inches long. As a measure of quolity acsurance, data was collected on all footlong sub sondwiches made over the period of an hour at cach store. Determined which, if any, of your stores are making sub sondwiches that are significantly shorter than 12 inches. You will conduct three t-tests, one for cach store. You want to be 95% confident in your reculto. (Note. This case ic inspired by reality. Scarch the internet for "claims over footlong sub' for a historical perspective and how a company used statistics to incure consistent quality.) Sandwich Measurements Store 1 Store 2 Store 3 Statistics Store 1 Store 2 Store 3 8.8 9.1 9.0 Somple Size Mean (length) 11.4 11.6 12.5 13.4 13.4 15.1 Variance 11.3 11.4 14.3 Standard Deviation 10.1 10.3 10.8 12.4 12.4 13.8 Hypothesised Meon (M) Difference in Means (2 - M) 10.4 10.6 11.2 8.9 3.2

Problem: Cestomers are complaining about sandwich leagth You are the owner of three local sondwich shops. Recently you've received complaints from customers that their "footlong" sub sandwiches were less than 12 inches long. As a measure of quolity acsurance, data was collected on all footlong sub sondwiches made over the period of an hour at cach store. Determined which, if any, of your stores are making sub sondwiches that are significantly shorter than 12 inches. You will conduct three t-tests, one for cach store. You want to be 95% confident in your reculto. (Note. This case ic inspired by reality. Scarch the internet for "claims over footlong sub' for a historical perspective and how a company used statistics to incure consistent quality.) Sandwich Measurements Store 1 Store 2 Store 3 Statistics Store 1 Store 2 Store 3 8.8 9.1 9.0 Somple Size Mean (length) 11.4 11.6 12.5 13.4 13.4 15.1 Variance 11.3 11.4 14.3 Standard Deviation 10.1 10.3 10.8 12.4 12.4 13.8 Hypothesised Meon (M) Difference in Means (2 - M) 10.4 10.6 11.2 8.9 3.2

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: (a) State which of the following sets of data are discrete. Speeds of cars travelling along a road.…

A: A set data is discrete if every point of the set is a discrete point. A point is said to discrete if…

Q: (c) Find x, and y. Then find the equation of the least-squares line ŷ : b to three decimal places.)…

Q: The manager at Publix recently received information that customer satisfaction dropped at noon due…

A: The manager at Publix recently received information that customer satisfaction dropped at noon due…

Q: In this problem, assume that the distribution of differences is approximately normal. Note: For…

A: a. Level of significance The level of significance is defined as the probability of rejecting a null…

Q: A student constructs the scatterplot below and concludes that the price increased by the same amount…

A: We have to check the conclusion made by student on the basis of the scatterplot of the given data.…

Q: Ackerman and Goldsmith (2011) compared lear performance for students who studied material printed on…

A: a) Dependent and independent variable: The variable of interest, regarding which, the prediction is…

Q: The amount of time adults spend watching television is closely monitored by firms because this helps…

A: The mean of the sampling distribution is, μx¯=μ The standard deviation of the sampling distribution…

Q: Use MINITAB or some other computer software toconstruct a stem-and-leaf display for the following…

A: The stem and leaf plot is obtained using EXCEL MegaStat. The software procedure is given below:…

Q: In general, % of the values in a data set lie at or below the median. % of the values in a data set…

Q: It is thought that prehistoric Indians did not take their best tools, pottery, and household items…

A: e) The sample correlation coefficient between two random variables x and y is given as 0.884.

Q: Which one of the following values can never be negative?

A: So measures of central tendency and dispersion are given and we have to determine which measure can…

Q: watching uns ieips to delenmine ) Do you think the variable "weekly time spent watching television"…

Q: alpha should be used? 4. Can you say with 95% confidence that Store 1 is producing sub sandwiches…

A: The data shows the sandwich measurements for three stores.

Q: 1.4 For each of the following items from a public- opinion survey, indicate the level of measurement…

A: a) Discreate b) Discreate c) Discreate

Q: In this problem, assume that the distribution of differences is approximately normal. Note: For…

A: Note: Hi there! Thank you for posting the question. As your question has more than 3 parts, we have…

Q: The amount of time adults spend watching television is closely monitored by firms because this helps…

A: The amount of time adult spent watching television is closely monitored by firms. data given: mean=…

Q: Determine and explain why the following is discrete or continuous variable 1. income of a teacher…

A: A variable can be discrete or continous. Discrete variable are countably finite and it will be…

Q: If the incidence rate of an incurable disease doesn’t change but better treatments result in longer…

A: The prevalence of illness and years of life lost owing to disease, respectively, if the incidence…

Q: In this problem, assume that the distribution of differences is approximately normal. Note: For…

Q: Question 3: What is the highest scale of measurement of the dependent variable? A. Interval B.…

A: 1. Dependent and independent variable: The variable of interest, regarding which, the prediction is…

Q: Presented below is a "data scenario." Decide which type of grouping (single-value, limit, or…

A: The question is about grouping.Introduction :Single value grouping :This is a one of the type of…

Q: Fitting a straight line to a set of data yields the following prediction line. Complete (a) through…

A: The variable Y is the dependent variable and variable X is the independent variable. The value of Y…

Q: 3. The volume of water served to each table at a restaurant measured in fluid ounces is which type…

A: It is given that the statement about to the type of data. Here, need to find out the correct choice…

Q: In this problem, assume that the distribution of differences is approximately normal. Note: For…

A: b) The level of significance is 0.05.

Q: see 1.png

A: Provided information, Researcher interested in comparing the depression levels for australian…

Topic Video

Question

Alignment
Font
Clipboard
fe
L2
E
G.
H.
K
A.
C D
Problem: Customers are complaining about sandwich leagth
You are the owner of three local sandwich shops. Recently you've received complaints from
customers that their "footlong" sub sandwiches were les than 12 inches long. As a measure of
1
quality assurance, data was collected on all footlong sub sondwiches made over the pcriod of an
hour at cach store. Determined which, if any, of your stores are making sub sandwiches that are
significantly shorter than 12 inches. You will conduct three t-tests, one for coch store. You want
4
6.
to be 95% confident in your recults. (Note. This case is inspired by reality. Scarch the internet for
"claims over footlong sub' for a historical perspective and how a company used statistics to
incure consistent quality.)
17
10
11 SandwicL Measuremeat:
12 Store 1 Store 2 Store 3
Statistics
Store 1 Store 2 Store 3
13
8.8
3.1
9.0
Somple Size
Mean (length)
14
11.4
11.6
12.5
15
13.4
13.4
15.1
Variance
Standard Deviation
16
11.3
11.4
14.3
17
10.1
10.3
10.8
18
12.4
12.4
Hypothesized Mean (M)
Difference in Means (X - M)
Stondard Error
13.8
19
10.4
10.6
11.2
20
8.9
9.2
3.1
21
10.4
11.1
T-Statistic
22
11.8
14.0
Degrees of Frcedom
23
12.8
14.3
24
9.3
8.7
P-value P(T=t) two-tail
25
12.6
13.7
"Remomberthat the T.DIST.2T) Function requiror the t-
statirkic arqumont ta be an abralute value, nat a noqativo value,
26
11.7
12.9
27
11.8
13.0
or an orror uill occur.
28
3.7
10.2
29
12.6
14.1
30
8.6
Interpret the Reselts
8.6
1. What is the null hypothesis for these teste?
2. What is the alternative hypothesis for these teste?
3. Given the desired confidence level, whst alpha should be used?
4. Can you say with 95% confidence that Store 1 is producing sub
31
14.6
[select]
[select]
32
11.0
33
[select]
34
candwiches with an average length that is less than 12 inchcs?
5. Can you say with 95% confidence that Store 2 is producing sub
35
[select]
36
sandwiches with an average length that is less than 12 inches?
6. Con you say with 95% confidence that Store 3 is producing sub
condwiches with an average length that is less than 12 inches?
37
[sclect]
38
39
[sclect]
Glossary
Case 1
Case 2
Sandwich Shop
Ready
P Type here to search
耳|

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

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 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

The amount of time adults spend watching television is closely monitored by firms because this helps to determine advertising pricing for commercials. Complete parts (a) through (d). ..... (a) Do you think the variable "weekly time spent watching television" would be normally distributed? If not, what shape would you expect the variable to have? A. The variable "weekly time spent watching television" is likely symmetric, but not normally distributed. B. The variable "weekly time spent watching television" is likely uniform, not normally distributed. C. The variable "weekly time spent watching television" is likely skewed right, not normally distributed. D. The variable "weekly time spent watching television" is likely normally distributed. E. The variable "weekly time spent watching television" is likely skewed left, not normally distributed. (b) According to a certain survey, adults spend 2.25 hours per day watching television on a weekday. Assume that the standard deviation for "time…
c. Complete the analysis (be sure to include graphs as appropriate to the test). Show me calculations and results from excel. d. What is the interpretation of your results?
In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer. The western United States has a number of four-lane interstate highways that cut through long tracts of wilderness. To prevent car accidents with wild animals, the highways are bordered on both sides with 12-foot-high woven wire fences. Although the fences prevent accidents, they also disturb the winter migration pattern of many animals. To compensate for this disturbance, the highways have frequent wilderness underpasses designed for exclusive use by deer, elk, and other animals. In Colorado, there is a large group of deer that spend their summer months in a region on one side of a highway and survive the winter months in a lower region on the other side.…
Which of the following is the closest estimate of r for the following scatterplot? a. .4 b. 0 c. -.9. d. -.4
I need help explaining parts a and b.
Imagine you are talking with a novice statistics student. How would you describe the method of determining if a variable is continuous versus discrete?
Suppose a researcher collects data on the bacterial contamination, measured in colony-forming unit per milliliter, for both upstream and downstream sections of 35 rivers. The data is plotted with upstream bacterial contamination on the horizontal axis and downstream bacterial contamination on the vertical axis. The Scioto River is an outlier in the ?y‑direction. What must be true about this river? The upstream bacterial contamination for this river is much higher or lower than the rest of the rivers in the data set. The downstream bacterial contamination for this river is much higher or lower than other rivers in the data set that have similar upstream bacterial contamination. This river is an influential observation. The downstream bacterial contamination for this river is much higher or much lower than the rest of the rivers in the data set. The absolute value of the residual of this river is large.
2. For each of the following, determine if the variable is continuous or discrete:a. Time taken to read a book chapterb. Favorite foodc. Cognitive abilityd. Temperaturee. Letter grade received in a class3. For each of the following, determine the level of measurement:a. T-shirt sizeb. Time taken to run 100 meter racec. First, second, and third place in 100 meter raced. Birthplacee. Temperature in Celsius
In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer. The western United States has a number of four-lane interstate highways that cut through long tracts of wilderness. To prevent car accidents with wild animals, the highways are bordered on both sides with 12-foot-high woven wire fences. Although the fences prevent accidents, they also disturb the winter migration pattern of many animals. To compensate for this disturbance, the highways have frequent wilderness underpasses designed for exclusive use by deer, elk, and other animals. In Colorado, there is a large group of deer that spend their summer months in a region on one side of a highway and survive the winter months in a lower region on the other side. To…
In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer. The western United States has a number of four-lane interstate highways that cut through long tracts of wilderness. To prevent car accidents with wild animals, the highways are bordered on both sides with 12-foot-high woven wire fences. Although the fences prevent accidents, they also disturb the winter migration pattern of many animals. To compensate for this disturbance, the highways have frequent wilderness underpasses designed for exclusive use by deer, elk, and other animals. In Colorado, there is a large group of deer that spend their summer months in a region on one side of a highway and survive the winter months in a lower region on the other side. To…
In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer. The western United States has a number of four-lane interstate highways that cut through long tracts of wilderness. To prevent car accidents with wild animals, the highways are bordered on both sides with 12-foot-high woven wire fences. Although the fences prevent accidents, they also disturb the winter migration pattern of many animals. To compensate for this disturbance, the highways have frequent wilderness underpasses designed for exclusive use by deer, elk, and other animals. In Colorado, there is a large group of deer that spend their summer months in a region on one side of a highway and survive the winter months in a lower region on the other side.…
A. Does this mean the true average length of a pine needle is not 10cm (a = 0.05)? B. Does this mean the true average length of a pine needle is not 10cm (a = 0.01)? c. Does this mean the true average length of a pine needle is not 10cm (a = 0.10)?