QUESTION FOUR A bottling company in Ghana is interested in the effects of three methods used to sanitize its glass containers. The table below sows the three different methods and the sanitation grades of glass containers produced by the company. Method Sanitation Grade Acceptable Marginal Unacceptable 140 132 63 89 74 44 140 98 50 Determine whether sanitation grade is related to method used to sanitize glass containers. Use a significance level of 5%.
Q: Seven different hardwood concentrations are being studied to determine their effect on the strength…
A: Hardwood concentration (%) Day(1) Day(2) Day(3) Day(4) Day(5) Day(6) Day(7) Total 2 114…
Q: Exercise 2. A study is designed to test whether there is a difference in mean daily calcium intake…
A:
Q: Which of the following study designs is most efficient in studying a rare exposure? A. Case control…
A: Solution-: Which of the following study designs is most efficient in studying a rare exposure?(A)…
Q: A. Do the data provide sufficient evidence to indicate a difference in mean efficiencies for the two…
A: For Type A : Count, N: 8 Sum, Σx: 585 Mean, x̄1 73.125 Variance, s2: 9.5535 Standard…
Q: Find the coefficient of determination (Do not use Excel). a) 0.2948 O b) None of the answers are…
A:
Q: 6. Mrs. Dante collects data on the entry fees to local zoos for a class field trip. All of the entry…
A: Mrs. Dante needs to use measures of central tendency and variability that are suitable for…
Q: Which of the following can help identify special cause variation in a process? a. capability…
A: Control chart
Q: What variables do Teczar find to have the most significant controlled associa
A: From the given information, The table of correlations is, Women in Ministries sample size 0.5…
Q: A manufacturing company produces three different types of products: A, B, and C. The company…
A: The given data is as follows:
Q: Several methods of estimating the number of seeds in soil samples have been developed by ecologists.…
A: There are two dependent samples which are direct and stratified. We have to test whether the mean…
Q: Three training methods were compared to see whether they led to greater productivity after training.…
A: One - Way ANOVA : This is the technique used to check whether there is significant difference…
Q: Several methods of estimating the number of seeds in soil samples have been developed by ecologists.…
A: The random variable is number of seeds detected. There are two dependent samples which are direct…
Q: 4) The quality control engineer resets the bottle-filling machine and selects another 400 bottles…
A: Given that, Mean = 12.2 sd = 0.06 To interpret the given histogram.
Q: Three different methods of tillage and four varieties were tested in a field experiment using a…
A: The objective is to interpret the descriptive statistics of the given tables.
Q: A researcher is exploring the relationship of academic performance of students in an online class to…
A:
Q: Three different methods of tillage and four varieties were tested in a field experiment using a…
A: The objective is to interpret the descriptive statistics .
Q: Journal of Economic, Political and Business Analysis XIV (2) delivers a report on the stagnation of…
A: Average=sum of observationsnumber of observationsMedian=n+12th observation if n is oddn2+n2+1th…
Q: Which of the following designs is best for testing a causal relationship? Cross-sectional…
A: As we know that, Cross-sectional designs are used for population-based surveys and to assess the…
Q: Find the coefficient of determination
A: The coefficient of determination = r2
Q: Question 2. Crescent Oil has developed three new blends of gasoline and must decide which blend or…
A: TreatmentsBlock 1Block 2Block 3Block 4Block 5TotalBlend X3130293326149Blend Y3029293125144Blend…
Q: 2. Two types of instruments for measuring the amount of sulfur monoxide in the atmosphere are being…
A: Solution: Given information: nA= 9 Sample size of Instrument AnB= 9 Sample size of Instrument B…
Q: Consider the following table where the production quantity of a welding process is presented for…
A: Given data:
Q: As part of an evaluation program, a sport goods retailer wanted to compare the downhill coasting…
A: Given that F statistic =10.17 degree of freedom (Bicycle Brands) =3 degree of freedom (Error)=8…
Q: 1) A series of experiments were conducted to determine the effect of air voids on percentage…
A: Null hypothesis: H0:µ1 = µ2 = µ3 Alternative hypothesis: H1: At least one of the means is different…
Q: When selecting measures of association and the two variables of interest are measured at different…
A: In Statistics, measure of association is used to quantify a relationship between two or more…
Q: i) From the above sampling, find the value of correlation coefficient r. ii) Using the same sample…
A: The following data for the X and Y variables are provided: X = Weight of plastic usage Y = Size…
Q: 14. In planning for your study, you find a case-control study that examined the relationship between…
A: For two attributes, A & B, Yule's coefficient of association is, Q=(AB) (αβ)-(Aβ) (αB)(AB)…
Q: οUESTONOUR A bottling company in Ghana is interested in the effects of three methods used to…
A: Given, A bottling company in Ghana is interested in the effects of three methods used to sanitize…
Q: Find the test statistic. (Round your answer to two decimal places.) t = Find the df. (Round your…
A: The given data shows the number of seeds detected by the direct method and by the stratified method…
Q: What variables do Teczar find have the most significant controlled associations with women in…
A: The correlation is a statistical technique that is used for analyzing the behavior and association…
Q: The training methods were compared to see whether they led to greater productivity after training.…
A: Given : The training methods were compared to see whether they led to greater productivity after…
Q: Summary: This study aimed to determine whether exposure to Artificial Light At Night (ALAN) while…
A: Given the result of the study, of the 7,807 participants who said they slept with no artificial…
Q: Which research design studies only people who are initially free of the disease of interest? Explain…
A: Identifying the study design.
Q: 5. An ecologist is studying the flower Iris versicolor. He measures the width and length of 100…
A: Answer: a) We are asked to determine the petal's length given that the petal is at the 30th…
Q: Select any of the following scenarios where data should be collected through an observational study…
A: The four scenarios where data are collected.The data collection is either through an observational…
Step by step
Solved in 3 steps
- You are in charge of quality control for a company that manufactures a famous luxury brand ofhandbags. There are three different defects that you must be on the lookout for. A defect in any ofthese areas means the handbag cannot be sold and must be either recycled or destroyed.• Defects in stitching: 11% of items• Defects in coloring: 8% of items• Defects in materials: 4% of itemsBecause the areas (stitching, coloring/dying, materials) are done by different suppliers or in differentareas of the manufacturing plant, you may assume that the types of defects are independent of eachother.1. If there is a defect in all of the areas, the product must be destroyed. What percentage of bagswill need to be destroyed?2. A defect in coloring or materials means the product cannot be recycled and must therefore bedestroyed. For what percentage of bags will this be the case?3. What is the probability that a defect will be found of any of the three types?A fragile product will be transported by road or rail. Since the railway is cheaper, this transportation route will be preferred if the breakage rate is less than 5% in the railway. In the table below, the amount of products transported by both ways and the transportationThe number of broken ones is given. Accordingly, which transportation route should be preferred at the 5% significance level?You’re a quality control engineer working for Tinker Air Force Base. The length, width, andheight of a manufactured part used in the maintenance, repair, and overhaul of a particularaircraft type are classified as being either within or outside specified tolerance limits. In aquality inspection, 86% of the parts are found to be within the specified tolerance limits forwidth, but only 80% of parts are within specified limits for all three dimensions. Further, 2% ofthe parts are within the limits for width and length but not for height, and 3% of parts arewithin limits for width and height but not length. Also, 92% of parts are within limits for eitherwidth or height or both. If a part is within the specified tolerance limits for height, what is theprobability that it will also be within the specified limits for width?
- A certain virus affects 0.7% of the population. A test used to detect the virus in a person is positive 87% of the time if the person has the virus (true positive) and 14% of the time if the person does not have the virus (false positive). Fill out the remainder of the following table and use it to answer the two questions below based on a total sample of 100,000 people. Virus No Virus TotalPositive Test Negative Test Total 100,000a) Find the probability that a person has the virus given that they have tested positive. Round your answer to the nearest hundredth of a percent and do not include a percent sign. % b) Find the probability that a person does not have the virus given that they test negative. Round your answer to the nearest hundredth of a percent and do not include a percent sign. %The National Highway traffic Safety Administration requires each U.S. state to carry out an observational study to assess the level of seat belt use in the state. One report summarized data from a study done in a certain state. The proportions in the accompanying table are based on observations of over 25,000 drivers and passengers. Male Female Uses Seatbelt Does Not Use Seat Belt 0.42 0.455 0.08 0.045 Assume that these proportions are representative of adults in this state and that an adult from this state is selected at random. (a) What is the probability that the selected adult does not use a seat belt given that the selected individual is female? (b) What is the probability that the selected individual is female given that the selected individual does not use a seat belt? (c) Are the probabilities from parts (a) and (b) equal? Write a couple of sentences explaining why or why not. They --Select--- ✓ equal. Part (a) is the proportion of [---Select--- ---Select--- and part (b) is the…You are an education researcher interested in studying if race or ethnicity affects the severity of punishment children receive. Through open records, you are able to collect from several high schools the length of suspensions given to kids for fighting along with the race/ethnicity of the child. The state of Texas divides school children into one of 7 race/ethnicity groups: African American, American Indian, Asian, Hispanic, Pacific Islander, White, or Multiracial. You want to compare the average length of suspension among these 7 groups. Which statistical test would be best to determine if there is a significant difference in the severity of punishment among the different groups? one-sample t-test related samples t-test independent samples t-test ANOVA
- An investigator wants to assess the association between caffeine consumption and impaired glucose tolerance, a precursor to diabetes. A study is planned to include seventy participants. Each participant will be surveyed with regard to their daily caffeine consumption. In addition, each participant will submit a blood sample which will be used to measure glucose level. Identify the type of study proposed. Briefly explain why you think the study is of this type. Indicate the study type's specific strengths and weaknesses. Could the study describe be designed as a randomized clinical trial? If so, briefly outline the study design. If not, describe the barriers.A healthcare provider notices an outbreak of foodborne illness among individuals who attended a holiday cookout. Which study type would be most beneficial in identifying the source of the outbreak?A health psychologist investigated dietary differences between middle class Hispanic and Black women. One dietary practice examined was the consumption of mutagen-containing meats (defined as smoked, grilled, or fried meat). Based on the contingency table below, is there a reason to believe there a difference between women with respect to their consumption of mutagen-containing meat servings per day. What can be concluded with an a of 0.01? Ethnicity Мeat Hispanic Black 0-1 68 75 serving 2-3 45 19 serving 4+ 11 37 serving a) Select and compute the appropriate statistic. ---Select--- %3D b) Obtain/compute the appropriate values to make a decision about Ho. p-value ; Decision: ---Select--- c) Compute the corresponding effect size(s) and indicate magnitude(s). If not appropriate, input and/or select "na" below. Effect Size = ; Magnitude: ---Select-- d) Make an interpretation based on the results. O There is a significant negative relationship between middle class and food preference.…
- A cohort study was undertaken to test for association between arteriolosclerosis (hardening of the arterioles) and secondary hypertension. The data were split into 2 groups: subjects who had been treated with nonsteroidal anti-inflammatory drugs (NSAIDS) and those who had not. The stratified data are shown in Table 3: Treated with NSAIDS Exposure Category Secondary Hypertension No Secondary Hypertension Total Not Treated with NSAIDS Exposure Category Secondary Hypertension No Secondary Hypertension Total Table 3 Arteriolosclerosis 46 23 69 Arteriolosclerosis 79 25 104 No Arteriolosclerosis 251 724 975 No Arteriolosclerosis 405 446 851 Total 297 747 1044 Total 484 471 955 Obtain the stratum-specific odds ratios for the 2 groups and the odds ratio for the aggregate data. Comment on the association between arteriolosclerosis and secondary hypertension and the role played by NSAIDS in this association.The more costly and time-consuming it is to export and import, the more difficult it is for local companies to be competitive and to reach international markets. As part of an initial investigation exploring foreign market entry, 9 countries were selected from each of four global regions. The cost associated with importing a standardized cargo of goods by sea transport in these countries (in US$ per container) is stored in the accompanying data table. Complete parts (a) through (d). East Asia & Pacific Eastern Europe & Central Asia Latin America & Caribbean Middle East & North Africa240 77 1200 466777 335 688 397266 396 970 554383 83 290 644580 150 545 181220 306 420 646389 1125 450 695233 655 583 754392 100 1500 779 c. At the 0.05 level of significance, is there evidence of a difference in the variation in cost of importing among the four global regions? Determine…The accompanying table shows the percentage of people with 2 dosage of Covid vaccine administered. Determine the parameters for the South 大 East Asian Countries.