MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
expand_more
expand_more
format_list_bulleted
Concept explainers
Topic Video
Question
Listed below are the lead concentrations in
mean lead concentration for all such medicines is less than
normally distributed.
muμg/g
measured in different traditional medicines. Use a
0.010.01
significance level to test the claim that the 1717
muμg/g.
Assume that the lead concentrations in traditional medicines are 1010
13.513.5
16.516.5
19.519.5
2121
13.513.5
3.53.5
22.522.5
1313
3.53.5
What are the null and alternative hypotheses?
Upper H 0H0:
muμequals=1717
muμg/g
Upper H 1H1:
muμless than<1717
muμg/g
Upper H 0H0:
muμequals=1717
muμg/g
Upper H 1H1:
muμgreater than>1717
muμg/g
Upper H 0H0:
muμequals=1717
muμg/g
Upper H 1H1:
muμnot equals≠1717
muμg/g
Upper H 0H0:
muμgreater than>1717
muμg/g
Upper H 1H1:
muμless than<1717
muμg/g
Determine the test statistic.
Determine the P-value.
State the final conclusion that addresses the original claim.
Upper H 0H0.
There is
1717
muμg/g
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
Trending nowThis is a popular solution!
Step by stepSolved in 3 steps with 3 images
Knowledge Booster
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
- Fill in the missing values for this ANOVA summary table: Source of Variation SS df MS F Between 1313.964 2 Within TOTAL 2795.964 15 Accordong to the given information, how many groups (or population means) are being compared using this ANOVA? (Hint: Use the df values to compute it) what is the total number of data used for this ANOVA? (Hint: Use the df values to compute it)arrow_forwardA variable is normally distributed with mean 32 and standard deviation 12. Use the Cumulative Z-Score Table to answer the following questions. Write your answers in decimal form using 4 decimal places. a) Find the area under the normal curve to the left of the data value 16.4. b) Find the area under the normal curve to the left of the data value 52.4. c) Find the area under the normal curve to the right of the data value 27.2. d) Find the area under the normal curve to the right of the date value 37.4, e) Find the area under the normal curve between the data values 37.4 and 52.4.arrow_forward1.171 How much vitamin C do women consume? To evaluate whether or not the intake of a vitamin or min- eral is adequate, comparisons are made between the intake distribution and the requirement distribution. Here is some information about the distribution of vitamin C intake, in milligrams per day, for women aged 19 to 30 years:4⁹ Percentile (mg/d) Mean 1st 5th 19th 25th 50th 75th 90th 95th 99th 84.1 31 42 48 61 79 102 126 142 179 (a) Use the 5th, the 50th, and the 95th percentiles of this distribution to estimate the mean and standard deviation of this distribution assuming that the distribution is Normal. Explain your method for doing this.arrow_forward
- To test whether the mean time needed to mix a batch of material is the same for machines produced by three manufacturers, the Jacobs Chemical Company obtained the following data on the time (in minutes) needed to mix the material. Manufacturer 1 2 3 17 28 24 23 26 23 21 31 27 19 27 26 a. Use these data to test whether the population mean times for mixing a batch of material differ for the three manufacturers. Use x=0.05.Compute the values below (to 2 decimals, if necessary). Sum of Squares, Treatment Sum of Squares, Error Mean Squares, Treatment Mean Squares, Error Calculate the value of the test statistic (to 2 decimals). The p-value is What is your conclusion? b. At the x=0.05 level of significance, use Fisher's LSD procedure to test for the equality of the means for manufacturers 1 and 3. Calculate Fisher's LSD Value (to 2 decimals). What conclusion can you draw after carrying out this test?arrow_forwardCan you assist me in answering this? (this is not graded but, rather, an excersice conducive to acquisition).arrow_forwardMake reference to the table below to answer the question that follows: Summary of number of times the child has been placed previously Mean Std. Dev. Freq. physically attacked people never sometimes often Total Source Between groups Within groups 5.5803571 5.9557503 8.7636364 8.7938607 9.8571429 7.8631146 Total 6.9893617 7.2826725 L₂² Analysis of Variance SS df MS 112 55 21 188 F 568.203236 2 284.101618 9349.77549 185 50.539327 9917.97872 187 53.0373194 Bartlett's test for equal variances: chi2(2) = 12.1506 Prob-chi2= 0.002 5.62 Prob > F Does this test violate the assumption of equal variances? 0.0043 O Yes, we are in violation of the assumption of equal variances because p= .002 for Bartlett's test O Yes, we are in violation of the assumption of equal variances because p= .0043 for the difference of means test O No, we are not in violation of the assumption of equal variances because .0043 for the difference of means test No, we are not in violation of the assumption of equal…arrow_forward
- To test whether the mean time needed to mix a batch of material is the same for machines produced by three manufacturers, the Jacobs Chemical Company obtained the following data on the time (in minutes) needed to mix the material. 3 1 19 21 25 20 23 24 21 23 a. Use these data to test whether the population mean times for mixing a batch of material differ for the three manufacturers. Use a 0.05. Compute the values below (to 2 decimals, if necessary). Sum of Squares, Treatment Sum of Squares, Error Mean Squares, Treatment Mean Squares, Error Calculate the value of the test statistic (to 2 decimals). Manufacturer What conclusion can you draw after carrying out this test?. Select your answer- 2 29 27 32 28 The p-value is -Select your answer What is your conclusion? -Select your answer- b. At the a 0.05 level of significance, use Fisher's LSD procedure to test for the equality of the means for manufacturers 1 and 3. Calculate Fisher's LSD Value (to 2 decimals).arrow_forwardListed below are numbers of Internet users per 100 people and numbers of scientific award winners per 10 million people for different countries. Construct a scatterplot, find the value of the linear correlation coefficient r, and find the P-value of r. Determine whether there is sufficient evidence to support a claim of linear correlation between the two variables. Use a significance level of α = 0.05. Internet Users Award Winners 30 Internet Users 90 80.1 79.1 57.2 5.3 3.3 8.7 The linear correlation coefficient is r = (Round to three decimal places as needed.) Determine the null and alternative hypotheses. ▼ Ho: P H₁: p (Type integers or decimals. Do not round.) The test statistic is t=. (Round to two decimal places as needed.) The P-value is. (Round to three decimal places as needed.) 30 67.8 1.6 77.8 37.9 10.4 0.1 Internet Users 90 Because the P-value of the linear correlation coefficient is a linear correlation between Internet users and scientific award winners. (.... 30 Internet…arrow_forward10. The following data was collected from 1 bag of Hershey Kisses®. Each Kiss® was weighed in grams with the wrapper and recorded in the table below. Hershey cims that there are 368 grams of chocolate in one bag. Hershey Kiss Weights in Grams 4.76 4.72 4.74 4.55 4.91 4.74 4.78 4.71 4.80 4.78 4.78 4.75 4.79 4.82 4.91 4.83 4.68 4.74 4.70 4.80 4.70 4.76 4.70 4.83 4.93 4.74 4.84 4.82 4.76 4.77 4.72 4.78 4.83 4.75 4.74 4.68 4.84 4.71 4.71 4.76 4.66 4.78 4.73 4.74 4.92 4.77 4.80 4.79 4.86 4.64 4.78 4.70 4.75 4.78 4.76 4.83 4.66 4.77 4.83 4.78 4.69 4.81 4.68 4.78 4.88 4.72 4.85 4.85 4.81 4.74 4.80 4.82 4.84 4.70 4.85 4.70 4.81 4.72 4.79 4.73 4.61 How might standard deviation and the shape of the distribution indicate how consistent Hershey® is in the manufacturing of their Kisses®?arrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
- MATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C...StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning
- Elementary Statistics: Picturing the World (7th E...StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman
MATLAB: An Introduction with Applications
Statistics
ISBN:9781119256830
Author:Amos Gilat
Publisher:John Wiley & Sons Inc
Probability and Statistics for Engineering and th...
Statistics
ISBN:9781305251809
Author:Jay L. Devore
Publisher:Cengage Learning
Statistics for The Behavioral Sciences (MindTap C...
Statistics
ISBN:9781305504912
Author:Frederick J Gravetter, Larry B. Wallnau
Publisher:Cengage Learning
Elementary Statistics: Picturing the World (7th E...
Statistics
ISBN:9780134683416
Author:Ron Larson, Betsy Farber
Publisher:PEARSON
The Basic Practice of Statistics
Statistics
ISBN:9781319042578
Author:David S. Moore, William I. Notz, Michael A. Fligner
Publisher:W. H. Freeman
Introduction to the Practice of Statistics
Statistics
ISBN:9781319013387
Author:David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:W. H. Freeman