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Mathematics Questions and Answers May 30, 2023

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As of November 2010, the number of deaths from cholera in Haiti was 917. Best estimates of the number who were sickened in the outbreak was 14,600 with a total population of 9,719,932. What was the incidence of cholera in this population (per 100,000) ?

Anas raw score in the filipino exam is 90 her history raw score is 94 .The z score of her filipino is 1.5 and the z score of her history is 1.2

Given that the line of best fit for employment growth in the health care and social assistance fields in Ontario can be modeled by the equation y=10.4x+607.2, where y represents the number of employees in thousands and x represents the number of years since 2010, determine the number of employees in these fields in 2018. The population is in

Two random samples are taken from private and public universities (out-of-state tuition) around the nation. The yearly tuition is recorded from each sample and the results can be found below. Test to see if the mean out-of-state tuition for private institutions is statistically significantly higher than public institutions. Assume unequal

What is the setting for One Step at a Time Like This's performance, Since I Suppose

A bin contains 60 lightbulbs, 10 of which are defective. If 6 light bulbs are randomly selected from the bin withreplacement, find the probability that all of the bulbs selected are good. Round to three decimal places as needed.

Stratified Simple Random Sample - a variation of the SRS. To take a Stratified Simple Random Sample, divide the population into 2 or more strata (naturally occurring subgroups). Take a SRS from the first strata then take a SRS from the second strata and so on until you hav SRS from each of the strata. Combine the SRS selected from each strata to
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Given the following values: =58, M =63, n = 42, M =3.4,= 0.05, conduct a one-sample z test for a two-tailed non-directional critical hypothesis test. What will be the decision for the null hypothesis? A. Retain the null hypothesis. B. Reject the null hypothesis. C. There is not enough information to make a decision. D. none of the above

We are testing a new drug, and we want to know whether the drug changes people's reaction time. We randomly select 30 participants and record how much time (in seconds) it takes for them to react to a surprising stimulus without the drug. The following day, each participant consumes the drug, and we record the change in reactiontimecompared to the
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The population standard deviation for the heights of dogs, in inches, in a city is6.5 inches. If we want to be98% confident that the sample mean is within2 inches of the true population mean, what is the minimum sample size that can be taken? z0.10 z0.05 z0.04 z0.025 z0.01 z0.005 1.282 1.645 1.751 1.960 2.326 2.576

Find the z -score corresponding to the given area. Remember, z is distributed as the standard normal distribution with mean of 0and standard deviation . 1 a.)The area to the left of z is 15%. b.)The area to the right of z is 65%. c.)The area to the right of z is 5%. d.)The area between -z and z is 95%.(Hint draw a picture and figure out the area

En cierta poblacin el 60% de los habitantes tienen pantallas gigantes. En una muestra aleatoria de 120 habitantes, cul es la probabilidad de encontrar que 0.5 o menos tengan pantalla gigante? Usa la proporcin

Two standardized tests, test A and test B, use very different scales. Assume that in one year the distribution of scores on test A can be modelled by N(700, 75) and that of scores on test B can be modelled by N(21, 3). If an applicant to a university has taken test A and scored 840 and another student has taken test B and scored 27, compare these
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Can you please help me solve the problem below. Suppose the Acme Drug Company develops a new drug, designed to prevent colds. The company states that the drug is equally effective for men and women. To test this claim, they choose a simple random sample of 100 women and 200 men.At the end of the study, 38 of the women caught a cold and 102 of the

#49. The following data has to do with maternal smoking and infant birth weight.(X,X 2 , Y,Y 2 ,and XY have already been calculated for you and are shown below.) Cigarettes Per Day (X)X 2 Infant Birth Weight (Y)Y 2 XY 247.556.2515.0 6367.251.8443.2 101006.947.6169.0 121446.238.4474.4 X=30X 2 =284Y=27.8Y 2 =194.14XY=201.6 The Pearson Correlation

The heights of fully grown trees of a specific species are normally distributed, with a mean of 53.5 feet and a standard deviation of 7.25 feet. Random samples of size 19 are drawn from the population. Use the central limit theorem to find the mean and standard error of the sampling distribution. Then sketch a graph of the sampling distribution.

Homework: Unit 4 Assignment 1 Score: 0 of 1 pt 10 of 15 (9 complete) A 6.2.1 Find the critical value to for the confidence level c =0.99 and sample size n = 6. Click the icon to view the t-distribution table. to =(Round to the nearest thousandth as needed.) Enter your answer in the answer box and then click Check Answer. All parts showing Clear
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The quality-control inspector of a production plant will reject a batch of syringes if two or more defective syringes are found in a random sample ofeightsyringes taken from the batch. Suppose the batch contains5%defectivesyringes. (a)Find(in terms of the number of syringes). (Enter a number. Enter your answer to two decimal places.) What is the

Answer the questions below about the AGE data from the fall 2012 Math 175 course. Age (Fall 2012) 18.83 20.40 22.50 19.25 20.42 22.50 19.67 20.58 22.50 19.67 20.75 23.92 19.67 20.75 24.33 19.75 21.00 24.50 19.83 21.08 25.00 20.00 21.80 26.30 20.25 22.25 32.80 20.33 22.50 38.17 49.33 5-2.1: What is Q1? 5-2.2: What is Q2? .3: What is Q3? 4: What is

Suppose the number of children in a family in Denmark is normally distributed with an unknown population mean and a population standard deviation of 1.6 children. A random sample of families from the population produces a sample mean of x = 2.2 children. Use a calculator to find the value of z that should be used to calculate a confidence interval

Pupillary distance is the distance between a person's eyes, measured in millimeters. We want to know whether the mean pupillary distance among adolescents is smaller than the mean pupillary distance among adults.The mean pupillary distance among adults is known to be 62.5 millimeters.We randomly select 50 adolescents and measure their pupillary
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answe with explanation Two one-dimensional distributions are uniform in [0, 2] for wj and [1, 4] for w2, and p(w1) = p(w2) = 0.5. Find the Bayes boundary for minimum error, and compute the Bayes error
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1. A machine can be in four different statm: new, good, bad, and dead. 1When the machine is in new condition, there is a prot of $10,000. 'When the machine is in good condition, there is a prot of $5,000. 'When the machine is in bad condition, there is a cost of $1,000. When the machine is dead, there is a cost of $5,000. It is possible to repair
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The results below were obtained by performing linear regression. Interpret the results. A. Interpret the correlation coefficient. B. Interpret the coefficient of determination. C. Write the linear equation that models the dataset. D. Interpret the significance of the regression equation. Model Fit Measures Overall Model Test Model R R2 F df1 df2 P

Qualitative Reporting: Case Scenario Counselors and school counselors are concerned about the current trend in the use of technology and how an excessive use of technology can lead to an increase in mood disorders and addiction. Research indicates this is particularly true for our youth. A complicating factor is that many youth use technology

Reflect on your study of Chapters 1 and 3-7, which covered the basics of business analytics and descriptive analytics. Discuss the history, importance, and relevance of business analytics in the Data Era.Having been exposed to descriptive and inferential statistics in this block of study, discuss the difference between these two branches of

Prove if A, B, and C are any 3 events that P(AuBuC) = P(A)+P(B)+P(C) - P(A^B)-P(A^C) -P(B^C) + P(A^B^C). Please show me simplest way possible to prove this. Thank you

It is reported in USA Today that the average flight cost nationwide is $431.96. You have never paid close to that amount and you want to perform a hypothesis test that the true average is actually less than $431.96. The hypotheses for this situation are as follows: Null Hypothesis: 431.96, Alternative Hypothesis: < 431.96. You take a random sample

Hi, Could you please help me with solving the following problem: By law, an industrial plant can discharge no more than 500 gallons of waste- water per hour, on average, into a neighboring lake. Based on other infractions they have noticed, an environmental action group believes this limit is being exceeded. Monitoring the plant is expensive, so a

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Please help Match the following data types to the data examples provided. The total points scored in the Super Bowl. The number of vowels in this response Amount of water in a lake The cooked weight of a McDonald's Quarter Pounder The height of the Empire . . . State Building 1_ Quantitative Discrete The number of A's on this 2' Quantitative
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Which of the following statements regarding voter ID laws are correct? Correct Answer(s) Voter ID laws have minimal influence on preventing fraud. Voter ID laws tend to turn away voters who disproportionately vote Democratic. Voter ID laws tend to turn away voters who disproportionately vote Republican. Voter ID laws tend to turn away equal

a. Sketch a histogram of the distribution of the number of resistant hacten'a for this sample of aliquots. Be sure to label your axes and include an appropriate title. Be sure to sketch BY HAND; that is. do not use a computer program to make a histogram. Opt)
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can anybody help me with a couple of questions and please show the steps and as much info, thanks 1.Two fair six-sided dice are thrown. What is the probability that the sum of the values on the two dice is a square number? 2.xis chosen at random from all integers between 1 and 20 inclusive. What is the probability that it is a multiple of 3?

You suspect that a gambler's die is "loaded," such that its six outcomes are not equally likely. You roll this die 120 times and get the following results: Side of Die:123456 Observed Frequency:161610202830 Is this a fair die (use = 0.05)? Answer the following: a) Hypotheses H 0 : H 1 : b) Assumptions (pick all that apply) Simple random sampling

ers 10 & 11) Listed below are amounts of court income and salaries paid to the town justices. All amounts are in thousands of dollars. Construct a scatterplot, find the value of the linear correlation coefficient r, and find the P-value using o = 0.05. Is there sufficient evidence to conclude that there is a linear correlation between court
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An urn contains three balls: one red, one green and one blue. At each step we draw one ball randomly, observe its color, and put it back. Let T be the number of steps until each color is observed at least once. Find E[T]. (Hint. Let X i be the number of trials to observe the i'th new color, after already observing i 1 different colors for i = 1,

Does the article mention the sample? What is the sample? Does the article report the mean and standard deviation? What are they? What about the mode, median, range, ratio, rate, variables, variance? https://www.google.com/amp/s/abc7chicago.com/amp/covid-in-kids-symptoms-and-pediatric-cases/11009346/

Last year a small statistical consulting company paid each of its five statistical clerks $23,000, two statistical analysts $60,000 each, and the senior statistician/owner $250,000. The number of employees earning less than the median salary is
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1.The study ran for several weeks during the semester. About a week after it started, the university announced that they would be holding training sessions for faculty and staff about how to handle situations involving a gunman on campus. This shut down the study for several days as the university needed the lab building for training. The study

Different cultivars of roses take different amounts of time to reach maturity. Thirteen different cultivars of roses were sampled. The following data represents the time in years it takes each cultivar to reach maturity. 2.6, 2.9, 3.1, 3.2, 3.4, 3.5, 3.6, 3.8, 4, 4.1, 4.4, 4.5, 4.9 Find the sample mean of the data: R= years Find the sample
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A Customer Telephone Center receives 1,200 calls in a 24-hour period. Of these calls, 75% occur between 9:30 a.m. and 3:30 p.m., and calls are evenly distributed during this time. If each person handles 10 calls an hour, how many people are needed to handle calls during these hours? 15 20 18 5

I need help calculating Tukey for this. The actual question is located at the bottom and there are two graphs included. A study was conducted to examine the impact of caffeine and gender on word recall. Ninety-six participants were randomly assigned to one of 16 groups. Each person was given a dose of caffeine and then tested for word recall. A 2
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What are the variables to analyze in answering the following question? (multiple answers) Research question: Do younger people have higher technology dependence? Group of answer choices Age Time zone Sleep time Employment Class Credit Tech dependence

Please I need help with my assignment due today. Here are the details. Article Analysis 2 Search the GCU Library and find two new health care articles that use quantitative research. Do not use articles from a previous assignment, or articles that appear in the Topic Materials or textbook. Complete an article analysis for each using the "Article

This winter has been especially wet on the sunshine coast where I live. Suppose the number of days, D, It rains next month, has a poisson distribution with =16 rainy days per month. of course, then it rains, the actual amount of rain varies. Let R 1 , R 2 , . . . , be the independent amounts of rain (in millimetres) on the rainy days and assume

Question 6(1 point) Based on past data, the producers of Ice Mountain bottled water knew that the proportion of people who preferred Ice Mountain to tap water was 0.649. To see how consumer perception of their product changed, they decided to conduct a survey. Of the 54 respondents, 44 indicated that they preferred Ice Mountain to the tap water in

Use the output below to answer the following question. Regression model.png Use the output below to answer the following questions (Q13 to Q17). Regression model.png R=.699a; RSquare = .489; Adjusted R square = .476 Does the overall model suggest a significant association between the independent variables and Anxiety symptoms? Does the overall

please help The data below contain the Exam #1 grades for an evening section of ECON3402 at the University of West Georgia. Use the data provided to obtain the median grade for this group of grades. Round your nal answer to the rst place to the right of the decimal point (e.g., 1.23 would be u, and 3.45 would be Q.) Student # Exam #1 Grade Student
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work must be done by hand Cellular ability to regulate homeostasis is important for normal cell functioning and can be measured by basal calcium (Ca) pump activity (nmol/mg/min). In a study investigating the effect of mercury (Hg) exposure in mothers on their newborn's cellular regulatory function, researchers measured the mercury deposits (g/g)
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for the t-test of smoking and lwt state the research question and the null and alternate hypotheses do you reject or fail to reject the null hypothesis based on the p-value and the alpha value state what that means in terms of the t-test results

please help Assume that you have a 12-sided die, with numbers 1 through 12 on the sides. Each side is equally likely to land face up in a roll (meaning it's a fair die). What is the expected value of a single roll
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MyfriendandIplaythefollowinggame:Ipayhim$2toplay.Iflipacoinatmost5times.Ifitcomesupheadsthefirsttime,Igeta$1andthegameends,otherwise,Iflipagainandifitcomesupheadsthistime,Iget$2.Wecontinueinthisway,sothatifthefirstheadsisonthethirdtossIget$4,thefourthtoss,$8,andthefifthtoss$16.Whatismyexpectedwinningsforthisgame?

What is the statistical analysis based on hypothesis statements- (one-directional vs. two-directional). What is your critical value(s)? Show your work from you test statistic. Remember to indicate if you may reject or not reject your null hypothesis. If you calculated a p-value, what is the p-value? Include answers to the following: Case 1:

James is the owner of a bakery. He takes 30 orders every day. The marginal cost per cookie is $5 and he sells them at $15 so he can make $10 profit/ cookie. He noticed that only 80% of his customers show up for their orders. 1) James is superstitious at odd numbers of customers that something will happen to him. What is the probability that an odd

Two ships, the Queen Elizabeth and the Queen Mary are 35 km apart. How far is each ship from a lighthouse if the Queen Elizabeth is at an angle of 68 and the Queen Mary is at an angle of 45 to the lighthouse?

9) The Pepsi Challenge is an ongoing marketing campaign run by PepsiCo since 1975 in which participants complete a blind taste test of two sodas (Pepsi and their primary competitor, Coca- Cola) and select their preferred soda. PepsiCo claims that 2 out of every 3 people prefer their brand of cola. A random sample of 80 people is taken, and 45 of
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Most people have been to a grocery store. Even if you still live at home and your parents do the grocery shopping, it seems likely you have been to more than one specific grocery store. To complete the Discussion activity, please do the following: Answer each question fully. Use a minimum of 250 words for a complete discussion post. While it is

The federal government recently granted funds for a special program designed to reduce crime in high-crime areas. A study of the results of the program in high-crime areas of Miami, Florida, are being examined to test the effectiveness of the program. The difference in crimes reported is calculated as (crimes after - crimes before). You want to

While running a 2-sample z-test for two proportions, you find a test statistic ofz=1.946. If the test is two-tailed and=0.05, what decision will you make?

2. The life expectancy in the United States is 75 with a standard deviation of 7 years. A random sample of 49 individuals is selected. a. What is the probability that the sample mean will be between 72 and 74 years? b. What is the probability that the sample mean will be larger than 73.46 years? HINT: Review Lab 1 Tutorial: Question 2 and answers
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Gbenga is having friends over for dinner. If 8 people will be eating dinner and he seats them at two tables of 4, how many potential groups are there?

1.Thinking that hearing about a gun might be more emotionally stressful for females then males, the researchers made sure that all female participants were in the control condition while males heard the conversation about the presence of a gun. After viewing the theft and speaking with the experimenter as well as campus security, all participants

Does a country's GDP level predict the life expectancy of its' female citizens? Are there regional differences? Are there other variables that might be of interest? Evaluate the following dataset, answer the following questions and create and paste a table with the regression output into the document. You will use the dataset UN.csv, for this

A study of seat belt users and nonusers yielded the randomly selected sample data summarized in the accompanying table. Use a 0.05 significance level to test the claim that the amount of smoking is independent of seat belt use. A plausible theory is that people who smoke are less concerned about their health and safety and are therefore less
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a) Let 1 5 m
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5. An article in Forbes magazine in December 2012 reported that 73% of Fortune 500 companies have Twitter accounts. An economist thinks the percentage is higher at technology companies. She samples 70 technology companies and finds that 55 of them have Twitter accounts. Can she conclude that more than 73% of technology companies have Twitter
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studying for my final exam having trouble with this ssment 5: End of Sessic x Bb 10193568 X Course Hero x f (1) Facebook lackboardcdn.com/5df059da37b55/10193568?X-Blackboard-Expiration=1612148400000&X-Blackboard-Signat... Trainin... Watch Movies Onl. Isaiah - It's Gotta.. X Vyxen Steel Gets.. X Destiny Jaymes I... X TeenPies - Hot 16 / 38 100% +
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We have three urns, each a different color: Red, Blue, Green. The Red Urn contains 3 red balls, 2 blue balls, and 3 green balls. The Blue Urn contains 3 red balls, 3 blue balls, and 2 green balls. The Green Urn contains 4 red balls, 5 blue balls, and 2 green balls. An urn is selected at random and a ball is drawn from the selected urn.The ball is

Find the missing side of the right triangle otherwise state no solution if it cannot be found. C=10 A=15

A certain airplane has two independent alternators to provide electrical power. The probability that a given alternator will fail on a one-hour flight is .02. (a) What is the probability that both will fail? (Round your answer to 4 decimal places.) Probability (b) What is the probability that neither will fail? (Round your answer to 4 decimal

Please help me with those questions.. thank you!! 2.1. Which of the following sentences are mathematical statements? Justify your answers. (a) The number 7r is the smallest irrational real number. (b) The number 7r is an irrational number. (c) The quadratic equation 2:2 4.1: + 2 = 0 does not have a solution in the integers. (d) The inequality 123
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You are asked to conduct the following hypothesis test concerning a population mean: H 0: = 49.1 HA : < 49.1 You know from a previous study that= 5.5. You draw a sample of size 30 from the population. The mean of the sample is 48.3. Calculate the p -value for this test. 0.4321 0.4256 0.2128 0.7839 0.2161 0.7872 Question 2 You are asked to conduct

Please Show Steps Computer component A has four identical parts linked in series, each of which will fail independent of the others with probability pA; component A will fail if any of its parts fail. Computer component B has four identical parts linked in parallel, each of which will fail independent of the others with probability p3; component B
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Could someone help me solve this problem, I don't understand how to raise the hypotheses (null and alternative), they ask me to solve this problem by "Signed range test for two means" 2. It is claimed that a new diet will reduce a person's weight by 4.5 kilograms, on average, over a two-week period. The weights of 10 women who follow this diet are
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In a large urban area with a population of 10 million people, 80,000 deaths occurred during the year ending December 31, 2008. These included 1,300 deaths from firearm-related injuries. Please calculate the proportionate mortality for firearm-related deaths in 2008 .

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True or False:The following is a null hypothesis: There is no difference between Protestants and Catholics in donations.

I am having trouble setting up these problems. While answers are welcome, I am interested in figuring out how to read the word problem and plug in the information to arrive at the answer. Please look at the attached document. 3. A medical researcher wishes to see whether the pulse rates of smokers are higher than the pulse rates of nonsmokers.
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What does the graph says? U= Unskilled hand S= skilled hand note: the seconds are the time of how the drawing a star done or finish. SUBJECT 1 7 SECONDS 1 2 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 TRIALS SUBJECT 1 TRIAL ERRORS TIME TRIAL ERRORS TIME TRIALS ERRORS TIME 15 6.72 95 4.87 175 5.56 25 6.62 105 5.31 185 4.47 35 6.3 115 4.60
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needing help with equations for each probability needed The overall probability of students graduating at each of the three universities. The overall probability of students having a publication at each of the three universities. The overall probability of students having a publication, given that they graduated at each of the three universities.
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what is the primary objective of double robust estimation? a. Make both the outcome and propensity score model more robust to outliers b. Provide an alternative to using propensity scores or regression adjustment for handling selection bias in causal inference c. Minimize computational complexity when using propensity scores d. Estimation that

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