Interpret the graph shown in the image associated with the average
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Interpret the graph shown in the image associated with the averages shown in the table.
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- Specimen Method 1 Method 2 1 1.5212457 1.5385967 2 1.5514927 1.5354895 3 1.4748865 1.4737537 4 1.5440624 1.5529241 5 1.5381555 1.5297297 6 1.6505717 1.6081168 7 1.3261934 1.3231544 8 1.5038477 1.5110962 9 1.428179 1.4512758 10 1.467465 1.4845284 11 1.5472126 1.5571789 12 1.2918578 1.3506767 13 1.4618478 1.4986059 14 1.5936601 1.5668332 15 1.4803333 1.5175659 16 1.6290638 1.6226015 17 1.4427661 1.4122777 18 1.6796492 1.6888483 19 1.4045012 1.400003 20 1.3489328 1.3604714 21 1.5058152 1.5016116 22 1.4720991 1.4776931 23 1.4545904 1.509409 24 1.430578 1.4316958 25 1.5169106 1.5382421 26 1.536495 1.5902854 27 1.6175856 1.64074 28 1.3455597 1.4092455 29 1.4430694 1.4113823 30 1.5438335 1.5427199he Damon family owns a large grape vineyard in western New York along Lake Erie. The grapevines must be sprayed at the beginning of the growing season to protect against various insects and diseases. Two new insecticides have just been marketed: Pernod 5 and Action. To test their effectiveness, three long rows were selected and sprayed with Pernod 5, and three others were sprayed with Action. When the grapes ripened, 430 of the vines treated with Pernod 5 were checked for infestation. Likewise, a sample of 390 vines sprayed with Action were checked. The results are: Insecticide Number of Vines Checked (sample size) Number of Infested Vines Pernod 5 430 24 Action 390 34 At the 0.05 significance level, can we conclude that there is a difference in the proportion of vines infested using Pernod 5 as opposed to Action? Hint: For the calculations, assume the Pernod 5 as the first sample. a. State the decision rule. (Negative amounts should be indicated by a minus sign. Do not…The manager of Alaina’s Garden Center must make theannual purchasing plans for rakes, gloves, and other garden-ing items. One of the items the company stocks is Fast-Grow,a liquid fertilizer. The sales of this item are seasonal, withpeaks in the spring, summer, and fall months. Quarterlydemand (in cases) for the past 2 years follows: If the expected sales for Fast-Grow are 1,850 cases for year 3,use the multiplicative seasonal method to prepare a forecastfor each quarter of the year.
- You conduct a survey of current exposure to organochlorine pesticides and pregnancy status among 500 fertility patients at a fertility center following them from 2015-2017. Half of those patients are pregnant at the time of survey. Of those who are pregnant, 63 reported using OCPs in their gardens in the last year while they were trying to conceive. Among those who are not pregnant at the time of survey, 40% reported using OCPs in their gardens in the last year while they were trying to conceive. Assume minimal loss to follow-up and no competing risks. a. Which study design is described above? Case-control study Closed cohort study Open cohort study Cross-sectional study Ecologic study None of the above B. Draw a 2x2 table based on the description above. Identify and label the exposure and the outcome. Be sure to include any appropriate totals based on the respective study design.What I Can DoCOVID -19 RecoveriesThe ongoing pandemic of corona virus disease 2019, a novel infectious disease causedby severe acute respiratory syndrome was spread in the Philippines onJanuary 30, 2020. Thousands of people in the country tested positive in this virus, and some ofthem recovered from the disease. The following table shows the number of recoveries from April24-May 3, 2020DateApril 24April 25April 26April 27April 28April 29April 30May 1May 2May 3Number of Recoveries X40307070434820414090a. Illustrate the probability distribution if X is the random variable that represents the number ofrecoveries.b. What safety precautions will you undertake to help avoid the spread of the COVID-19ppandemicaAt noon time, customers arrive at Metrobank counter managed by a single cashier with mean arrival rate of 6 customers per hour. The cashier attends the customers on first come first served basis at 10 customers per hour.What is the waiting time of a customer in the system?
- Robot Drying Time Robot 2 146 Robot 2 146 Robot 2 133 Robot 3 141 Robot 1 131 Robot 4 149 Robot 3 136 Robot 4 140 Robot 4 132 Robot 2 132 Robot 3 119 Robot 1 137 Robot 2 142 Robot 1 137 Robot 2 147 Robot 3 143 Robot 4 141 Robot 1 128 Robot 2 135 Robot 4 150 Robot 3 137 Robot 1 124 Robot 4 152 Robot 2 144 Robot 1 137 Robot 3 133 Robot 1 139 Robot 2 137 Robot 1 141 Robot 2 128 Robot 4 153 Robot 1 121 Robot 2 130 Robot 4 135 Robot 1 135 Robot 4 142 Robot 4 146 Robot 1 140 Robot 3 139 Robot 4 151 Robot 3 138 Robot 4 161 Robot 2 134 Robot 3 137 Robot 4 139 Robot 1 128 Robot 1 139 Robot 4 134 Robot 3 139 Robot 1 130 Robot 4 135 Robot 3 137 Robot 2 143 Robot 1 128 Robot 3 131 Robot 2 146 Robot 3 135 Robot 3 136 Robot 3 139 Robot 2 142Company determines that that the length of life of WPPX model radio is probably normal with µ=12 years and σ=2.5 year A) Lets say this radio company guarantees the radio for 9 years. What % of the radios will have to be replaced... find % of the radios that last less than 9 years? (b) Also lets say the radio company says they are going to replace the bottom 2.5% of the radios. What is thethe length of minimum guarantee period (c) What is the 90th percentile of the length of life of the radio model?Dawn is a brand of dishwashing liquid owned by Procter & Gamble. Introduced in 1973, it is the best-selling brand of dishwashing liquid in the United States. One of the inactive ingredients in Dawn is sodium lauryl sulfate. If the detergent contains too much of this ingredient, it will not perform as intended. The production process is set so that each bottle of Dawn detergent contains, on average, 8% sodium lauryl sulfate. How many bottles of Dawn detergent should be sampled if the Procter & Gamble quality control engineer wants to be 96% certain of being within 3% of the true population proportion of sodium lauryl sulfate in bottles of Dawn? Answer: n = bottles of Dawn should be sampled
- A health officer is trying to study the malaria situation of Zambia. From the records of seasonal blood survey (SBS) results he came to understand that the proportion of people having malaria in Zambia was 3.8% in 2015. The size of the sample considered was 15,000. He also realized that during the year that followed (2016), blood samples were taken from 10,000 randomly selected persons. The result of the 2016 seasonal blood survey showed that 200 persons were positive for malaria. Help the Health officer in testing the hypothesis that the malaria situation of 2016 did not show any significant difference from that of 2015 (take the 5% level of significance).2) . In February 2021, the Chicago Tribune reported:“The overdose epidemic that has ravaged Chicago has not spared the nearby suburbs, some of which have death rates comparable to anything seen in the city, according to a report released this week by the Cook County Department of Public Health. ZIP codes in the towns of Worth, Broadview, Maywood, and Forest Park, areas that “have substantially lower median household incomes and higher poverty rates,” have been especially hard-hit, the report said.”In the article, they claimed that lower incomes were associated with higher overdose death rates and that overdose death rates are increasing over time. The data you have been analyzing wasn’t focused on Chicago, obviously. But do your results support the general gist of the statistical argument being made in this Tribune excerpt? Please address:• Do overdose death rates appear to be associated with per capita income (use scatterplot)?• Do overdose death rates appear to be increasing over…A medical researcher is studying the effects of a drug on blood pressure. Subjects in the study have their blood pressure taken at the beginning of the study. After being on the medication for 4 weeks, their blood pressure is taken again. The change in blood pressure is recorded and used in doing the hypothesis test. Change: Final Blood Pressure - Initial Blood Pressure The researcher wants to know if there is evidence that the drug affects blood pressure. At the end of 4 weeks, 31 subjects in the study had an average change in blood pressure of -2.7 with a standard deviation of 5.3. Find the p-value for the hypothesis test. Your answer should be rounded to 4 decimal places.
