solve the maths asap correctly plz and answer all of these as all are connected Suppose, a researcher wants to conduct a study todetermine whether drinking alcoholic beverages has aneffect on the bacteria that cause ulcers and for thispurpose she conducted an experiment among 180 peopleand developed the following table -DevelopingNo. of Alcoholic drinksUlcerTotalconsumed per dayNoUlcerUlcerNoneA21One-Two4178More than twoE49TotalF82180a. What is the probability of consuming one-two alcoholicdrinks?Answer in exact fraction, or rounded to at least 4 decimal placesb. What is the probability of having ulcer?Answer in exact fraction, or rounded to at least 4 decimal placesc. What is the probability of developing ulcer among thepeople who don't consume alcoholic drinks?Answer in exact fraction, or rounded to at least 4 decimal placesd. What is the probability developing ulcer among thepeople who consumed more than two alcoholic drinks?Answer in exact fraction, or rounded to at least 4 decimal places

No. of alcoholics drinks Ulcer No Ulcer Total None A=32 21 B=53 one-two 41 C=37 78 more than…

Answered: Suppose, a researcher wants to conduct…

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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What is an experiment?
A manufacturer has determined that a machine averages one faulty unit for every 500 it produces. What is the probability that an order of 300 units will have one or more faulty units?
To investigate water quality, in early September 2016, the Ohio Department of Health took water samples at 2424 beaches on Lake Erie in Erie County. Those samples were tested for fecal coliform, which are the E. coli bacteria found in human and animal feces. An unsafe level of fecal coliform means there is a higher chance that disease‑causing bacteria are present and more risk that a swimmer will become ill if she or he should accidentally ingest some of the water. Ohio considers it unsafe for swimming if a 100-milliliter100-milliliter sample (about 3.3 ounces)3.3 ounces) of water contains more than 400400 coliform bacteria. The E. coli levels found by the laboratories are shown in the table. 18.7 579.4 1986.3 517.2 98.7 45.7 124.6 201.4 19.9 83.6 365.4 307.6 285.1 152.9 18.7 151.5 365.4 238.2 209.8 290.9 137.6 1046.2 127.4 224.7 Take these water samples to be an SRS of the water in all swimming areas in Erie County. Are these data good evidence that on…
The data in the attached image represents blood pressure based on a new trial medication used in an experiment involving a total of 50 male and female subjects. There were two levels of treatment: 0 = placebo and 1 = treatment group. Family History Blood Pressure = Fam-Hist-BP; from the paternal side = PS; from the maternal side = MS; from both sides = BS; none on both sides or not known = N.; Blood pressure before the experiment = BP-Before-Exp; Blood pressure after the experiment = BP-After-Exp. Task: Generate at least two different cross tabulations.
The data in the attached image represents blood pressure based on a new trial medication used in an experiment involving a total of 50 male and female subjects. There were two levels of treatment: 0 = placebo and 1 = treatment group. Family History Blood Pressure = Fam-Hist-BP; from the paternal side = PS; from the maternal side = MS; from both sides = BS; none on both sides or not known = N.; Blood pressure before the experiment = BP-Before-Exp; Blood pressure after the experiment = BP-After-Exp. Task: Find the mean and standard deviation for the family history group, the before treatment group, and the after treatment group.
The data in the attached image represents blood pressure based on a new trial medication used in an experiment involving a total of 50 male and female subjects. There were two levels of treatment: 0 = placebo and 1 = treatment group. Family History Blood Pressure = Fam-Hist-BP; from the paternal side = PS; from the maternal side = MS; from both sides = BS; none on both sides or not known = N.; Blood pressure before the experiment = BP-Before-Exp; Blood pressure after the experiment = BP-After-Exp. Task: Construct a histogram to represent the family BP history, the subjects' BP before treatment and the subjects' BP after treatment.
The data in the attached image represents blood pressure based on a new trial medication used in an experiment involving a total of 50 male and female subjects. There were two levels of treatment: 0 = placebo and 1 = treatment group. Family History Blood Pressure = Fam-Hist-BP; from the paternal side = PS; from the maternal side = MS; from both sides = BS; none on both sides or not known = N.; Blood pressure before the experiment = BP-Before-Exp; Blood pressure after the experiment = BP-After-Exp. Task: Construct a side-by-side boxplot to compare the variables BP-Before-Exp and BP-After-Exp.
A cross-sectional study of 1,900 participants looked at the association between Normal Course Load (12-15 credit hours (CH)) and Anxiety among upperclassmen college students (Junior & Senior). The study included 1,000 students with a High Course Load. This study also discovered a total of 850 cases of Anxiety. Of those with a Normal course load 12% were diagnosed with anxiety like symptoms by a school psychologist. Course Load High (16-19 CH) Normal (12-15 CH) Total 850 Yes Anxiety 1050 No 1000 900 1900 Total Fill in every blank cell in the table. You will report them as "fill in the blanks" below based on the labels in the table.
According to a prestigious historical society, in 1999, 7.2% of recent high school graduates believe that the Romans invented mayonnaise. A classic scholar belives that the percentage has increased since then. He randomly selects 125 recent high school graduates and finds that 17 of them believe in the Roman invention of mayonnaise. Test the researcher's claim at 0.01 level of significance.
Citrus Rental is a popular car rental agency that has a history of having too few cars available, so that its available cars are overdriven. The mean monthly mileage over the years for Citrus cars has been about 1550 miles per month. Recently, though, Citrus purchased thousands of new cars, and the company claims that the average mileage of its cars is now less than in the past. To test this, a random sample of 19 recent mileages of Citrus cars was taken. The mean of these 19 mileages was 1532 miles per month, and the standard deviation was 208 miles per month. Assume that the population of recent monthly mileages of Citrus cars is normally distributed. At the 0.1 level of significance, can it be concluded that the mean recent monthly mileage, μ , of Citrus cars is less than 1550 miles per month? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places and round your answers as…
Citrus Rental is a popular car rental agency that has a history of having too few cars available, so that its available cars are overdriven. The mean monthly mileage over the years for Citrus cars has been about 1550 miles per month. Recently, though, Citrus purchased thousands of new cars, and the company claims that the average mileage of its cars is now less than in the past. To test this, a random sample of 19 recent mileages of Citrus cars was taken. The mean of these 19 mileages was 1450 miles per month, and the standard deviation was 202 miles per month. Assume that the population of recent monthly mileages of Citrus cars is normally distributed. At the 0.05 level of significance, can it be concluded that the mean recent monthly mileage, u, of Citrus cars is less than 1550 miles per month? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places and round your answers as specified in the table. (If necessary,…
The Human Resources Department is studying absenteeism with employees. They have noticed an unacceptable level of absenteeism that is believed to be related to the general health of the employees. Twelve months ago, a fitness program for employees was started at the company. To evaluate the program, a random sample of eight participants were studied before the fitness program began and the same eight participants were studied twelve months later. The Human Resources Department believes the number of absences should change over the twelve months. Before After Difference Employee 1. What is dbar? 2. What is tcrit? 3. What is at? 4. What is pvalue? 1 5. What is decision? 6 5 2 6 2 four decimal places four decimal places 3 four decimal places 7 1 4 At the 5% significance level, answer the following questions using the following information: Ho: mu d = 0 Ha: mud #0 7 3 5 4 3 6 3 6 7 5 3 8 6 7 standard deviation of sample = 2.92

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