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Mathematics Questions and Answers May 02, 2022

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Can you give five examples for continuous probability distribution and five for discrete probability distribution

A company estimates that 0.6% of their products will fail after the original warranty period but within 2 years of the purchase, with a replacement cost of $500. If they offer a 2-year extended warranty for $78, what is the company's expected value of each warranty sold? Round your answer to the nearest cent. {
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question i need help with P Take a Test - christian hernandez - Google Chrome mathxl.com/Student/PlayerTest.aspx?testld=218319480¢erwin=yes PCC-STAT50-Summer 2020 christian hernandez & | 07/27/20 1:59 PM Test: Test#5-chapter 10 & 11 Time Remaining: 03:15:48 Submit Test This Question: 1 pt 1 of 10 (0 complete) This Test: 10 pts possible between
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7. A STAT 200 professor took a sample of 10 midterm exam scores from a class of 30 students. The 10 scores are shown in the table below: \f
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I don't teach much in person any more. I am so bad-looking that there were complaints from students. When I did teach at the Richmond campus I often got coffee before class at the Tim's there. Just for fun I wanted to find the probability of getting coffee in less than 2 minutes. I measured average wait times at the Tim's and found two minutes and
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(a) Tony runs9miles in53minutes. How many miles does he run per minute? ______ miles per minute (b)It takes67 pounds of seed to completely plant an11-acre field. How many pounds of seed are needed per acre? ________pounds per acre

Which of the following two variables would be appropriate for the two-way contingency table analysis? Group of answer choices Height and weight measured in inches Age, measured in years, and weight, measured in pounds Both A and B are incorrect

A television station asks its viewers to call in their opinion regarding the desirability of programs in high definition TV. .. . What type of sampling is used? O A. Cluster O B. Convenience O C. Simple random O D. Systematic O E. Stratified

MBA 6350 Week 2 Case Study - Data Visualization and Descriptive Statistics (Case Study #2) Case Study #2 is intended to test your knowledge of how to summarize data into descriptive statistics and correlation analysis, as well as create histograms, boxplots, and scatterplots for the applicable variables. The data file contains estimated housing

8 2 pts (CO 3) On the production line the company finds that 99.7% of products are made correctly. You are responsible for quality control and take batches of 30 products from the line and test them. Let X represent the number of products out of 30 that are made correctly. What value(s) of X would cause you to shut down production? O Less than 28

Use technology to find theP-value for the hypothesis test described below. The claim is that for 12 AM bodytemperatures, the mean is <98.6F. The sample size is n=6 and the test statistic is t=1.486. please show how to do it in statcrunch

Need help with g and h The method we have investigated is called the bisection method (The reason is ap- parent). Note that the intermediate value theorem, which is a seemingly abstract and useless result, is critical. (g) The function f(r) has one negative zero, too. By using the bisection method, find the negative zero with an error of less than
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Suppose at random 46% of school children develop nausea and vomiting following holiday parties and that you conduct a study to examine this phenomenon, with a sample size of n=12. What is the probability thatless than 12children become sick?

In a study of 10 insurance sales representatives from a certain large city, the average age of the group was 48.6 years with a standard deviation of 4.1 years. Find the 90% confidence interval of the population mean age of all insurance sales representatives in that city. Select one: a.46.47 < Mu < 50.73 b.46.22 < Mu < 50.98 c.46.23 < Mu < 50.99

E. RANDOM VARIABLE Xhas a Binomial Distribution, B(64, 0.5). #10. Standard deviation of X = __________ #11. Use Normal approximation, P(X > 24) = __________ F.Let P(A) = 0.6, P(B) = 0.7, and P(A or B) = 0.7, then P(A and B) = ___________ G. #12. From a student's' t-table, find m such that P(t > m) = 0.05 with sample size is 9.m = __________ H. For

Two cards are selected from a standard deck of 52 playing cards. The first is replaced before the second card is selected. Find the probability of selecting a heart and then selecting a king. what is The probability of selecting a heart and then selecting a king? king is ? . (Round to three decimal places as needed.)

In a queue with unlimited waiting space, arrivals are Poisson (parameter ) and service times are exponentially distributed (parameter ). However, the server waits until K people are present before beginning service on the first customer; thereafter, he serves one at a time until all K units, and all subsequent arrivals, are serviced. The server is

Table below gives Brinell hardness hourly test results of hardened tool steel in kilograms per square millimetre. (a) Compute the moving ranges for the data shown (2-period moving range). (6) (b) Calculate the centre line of the moving range chart and control limits for the same chart (Do not draw the chart). (6) (c) Calculate the centre line of

In a survey conducted by a reputable marketingagency, 253 of 1000 adults 19 years of age or older confessed to bringing and using their cell phone every trip to the bathroom(confessions included texting and answering phonecalls). Complete parts(a) through(f) below. a) What is the sample in thisstudy? What is the population ofinterest? Determine

Pierakstiet, kur gadjum notikusi olbaltumvielu, kur - nuklenskbju hidrolze? Hidrolzes rezultt ir iegts aminoskbju maisjums -.................... . Hidrolzes rezultt iegtajos produktos ir konstatti fosforskbes un oghidrta atlikumi

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Suppose you are working with a data set that is normally distributed, with a mean of 300 and a standard deviation of 48. Determine the value of x from the following information. (Round your answers and z values to 2 decimal places, e.g. 1.25.) (a) 70% of the values are greater than x. (b) x is less than 16% of the values. (c) 23% of the values are
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Which of the following is true about the dependent variable in an experiment? Group of answer choices The dependent variable is presented on the X-axis. The dependent variable is caused by the independent variable. The dependent variable is related to the independent variable. The dependent variable is manipulated

1. X is a normal random variable with mean 50 and standard deviation 15. Compute k so that: (a) P(X k) = 0.8413 (b) P(X k) = 0.3821 (c) P(30 X k) = 0.2238 2. X is a normal random variable: (a) If the standard deviation is 10 and P(X 20) = 0.3085 find the value for . (b) If = 3 and P(X 2) = 0.0778 find the variance of x.

A hypothesis must be ____. Group of answer choices true testable detailed written by a professional

what do you think are the central themes evident in Philippine contemporary art? how does idealizing affect art appreciation? how does the form of art affect the purpose and message of what is being portrayed in it?

how do i go about this (1 point) The half-life of Radium-226 is 1590 years. If a sample contains 500 mg, how many mg will remain after 4000 years? Answer: mg
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READ AND FOLLOW DIRECTIONS ! SUBJECT: SOCIAL RESEARCH METHODS Complete the topic essay for this module. You may use Web resources, your textbook, or any other resource. Answer the question fully; there is no minimum length for your answer (submittals are usually between 2 and 5 pages). Embed any pictures, tables, or data into the document. Follow
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Use the data 8, 9, 10, 12, 13, 14. Without actually computing the standard deviation, determine the value below that best approximates the standard deviation. Question content area bottom Part 1 Choose the correct answer below. A.7 7 B.24 24 C.12 12 D.2 2

The term error is used in two different ways in hypothesis testing: explain the difference of the three Type I error (or Type II), and ;Standard error. \f
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Engineering Maths IIA - Probability: It would be really helpful if you could please include any necessary information that will help in understanding the question and solution (i.e. what the variables are assigned to, Laws or Properties of probability used). Thank you! \f
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23. Let's say you know the number of Nobel laureates is 12.3 and want to find the amount of chocolate consumed. Substitute into the regression equation and find the amount of chocolate. Show your calculations
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In a regression analysis, suppose that we have three predictors - one factor-type predictorDwith 3 levels, another factor-type predictorEwith 2 levels, and a continuous predictorX. Write the mean functions of the following regression models (please introduce proper notations): Model1: YD+E+X Model2:YD+E+X+D:X+E:X Model3:YD+E+X+D:X+D:E:X

Suppose that cats' weight in the East York Animal Shelter follows a normal distribution with a mean of 18 kg and a variance of 0.25 kg^2. Which of the following R functions is used for obtaining the probability that a randomly chosen cat weighs more than or equal to 20kg? Question 1 options: 1-pnorm(20,18,0.50) pnorm(19,18,0.25,lower.tail=FALSE)

Can i please get some help with this question?thank you! A study was done to determine the average number of homes that a homeowner owns in his or her lifetime. For the 60 homeowners surveyed, the sample average was 4.2 and the sample standard deviation was 2.1. Calculate the 90% condence interval for the true average number of homes that a person
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On average, two UCI students get into a car accident each day. Assuming it is a Poisson distribution, what is the probability that exactly four UCI students will get into a car accident on any given day?Explain your work and how you got your answer.

People were polled on how many books they read the previous year. Initial survey results indicate that s=15.2 books. Complete parts (a) through (d) below. a) How many subjects are needed to estimate the mean number of books read the previous year within four books with 90% confidence? (b) How many subjects are needed to estimate the mean number of

Since an instant replay system for tennis was introduced at a major tournament, men challenged 1391 referee calls, with the result that 429 of the calls were overturned. Women challenged /63 referee calls, and 226 of the calls were overturned. Use a 0.05 significance level to test the claim that men and women have equal success in challenging
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19. What is the equation of the line-of-best fit? Insert the values for b, and b, from above into the equation y = bo + bix. (Your equation should have an x variable)
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Each of the following is a type of tactical entry EXCEPT ________. Group of answer choices buttonhook zigzag combination crisscross

For the sample space S = {apple pie, cherry pie, peach pie, pumpkin pie}, what is the complement of A = {pumpkin pie, cherry pie}? {apple pie, peach pie}{pumpkin pie, cherry pie}{apple pie}{peach pie}

When testing a new treatment, what is the difference between statistical significance and practical significance? Can a treatment have statistical significance, but not practical significance

NAAT testing is preferred over evaluation of wet mounts for the diagnosis of trichomoniasis because NAAT is which of the following? Question 5 options: more convenient than using wet mounts more sensitive than using wet mounts less likely to cause adverse effects to the patient than are wet mounts less expensive than using wet mounts

27. Use Life multiple regressloll equation to predict the Weight of person whose Nobel is 5.5 Population is 22 Internet is 79.5
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A z score of 0.00 means that ______. Group of answer choices a person had zero points on a test a person scored at the mean a person scored below the mean a person scored in the bottom percentile

Question 2 Consider the regression model: In(7IME) = B, + B, In(DEPART) +e. (1) (a) Estimate equation (1) using least squares technique and report the results. (3 Marks) (b) Interpret the regression coefficients. (4 Marks) (c) Find and interpret the 90% confidence interval for 5. (4 Marks) (d) Find and interpret the coefficient of determination.
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What is your thoughts several factors that may be the cause for a distribution to not appear normal in nature. Perhaps the most important up there on the list, is that 'said' variable just simply isn't normal in nature. A trad'tl example from a textbook might be the following: modeling the lifetime of a car battery (Weibull distribution) modeling

A metropolitan transportation authority has set a bus mechanical reliability goal of 3,800 bus miles. Bus mechanical reliability is measured specifically as the number of bus miles between mechanical road calls. Suppose a sample of 100 buses resulted in a sample mean of 3,825 bus miles and a sample standard deviation of 175 bus miles. Complete

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You have collected a sample of size n=30 concentration measurements from a normal population with unknown mean and known standard deviation of 3.0 mg/ml. a) To obtain your individualized sample measurements for this problem, first run a Matlab command or python script or use any other computing method to generate 30 random numbers between 70.0 and

MTH 95 Name Worksheet 3 Instructor grading score: /11 points For this assignment, function notation is REALLY important. Both the left side and right side of your function equations should look like the Lecture Examples and the examples on the Notation Standards in D2L. Make sure you check your notation, both sides of the equation, to make sure

Questions below the picture! Thank you! The following data represent the annual revenue (in millions of dollars] for a cloud software company from EDGE to 2019. Complete the table by developing: - 4year moving average forecasts - 3year weighted moving average forecasts using weights 6, 2 and 1, with emphasis placed on more recent periods -
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Examine the frequency distribution listed below. The variable is the number of in-service training classes teachers have attended over a 2-year period. What is the mode for the number of in-service classes taken by the teachers? Chapter 18 Question 3.png Group of answer choices 50 0 3 10

1.On an effort to evaluate the health effects if air pollution containing Sulphur, 90 individuals living near a pulp mill in Finland were questioned about various symptoms following a strong emission released in September 1987.The same 90 subjects were questioned again 4 months later during a low exposure period.Of the 20 individuals who had

Im sorry if its sideways but can you please help me out and Lebel the answers clearly. Thank You! 8. Identify, graph, and state the symmetries for each polar equation. Write the scale that you are using for the polar axis. (4 points) a. r= 900s(59) \f\f\f9. Transform each polar equation to an equation in rectangular coordinates and identify its
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VERTICAL DIAL READING (mm) STRAIN DIAL READING (mm) LOAD DIAL READING (mm) SHEAR FORCE (g) CROSSSECTIONAL AREA OF SPECIMEN (mm2 ) SHEAR STRESS (g/cm2 ) (1) (2) = rdg. x (2x10-3 ) (3) = rdg. x (2x10-3 ) (4) = (3) x proving ring calibration (5) = initial area of specimen (6) = (4)/

1) Using the following data, what would be a good research question?
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Consider selecting one card at a time from a 52-card deck. What is the probability that the first card is an ace and the second card is also an ace? Express the probability in fraction format. (Note: There are 4 aces in a deck of cards) Show all work (a) Assuming the card selection is without replacement. (b) Assuming the card selection is with

reply to at least one other student's post. In your reply, please do one of the following: 1. Simplify your peers sentences. Sharpen their approach 2. Suggest ways to Modify their analysis or instances of their use of course material. Convert measurements of length, area and Volume that you come across in daily life. Converting measurements is

You are working for a pollution control company that specializes in PM2.5 removal from homes. Your supervisor shows you the following abstract and does not understand the stuff about regression. The supervisor asks you to look at this abstract and explain it in English without all the statistical jargon. Pay particular attention to slope of the

The sodium content of a popular sports drink is listed as 245 mg in a 32-oz bottle. Analysis of 10 bottles indicates a sample mean of 256.6 mg with a sample standard deviation of 17.2 mg. 1.) Calculate the t test statistic to test the manufacturer's claim. (Round your answer to 4 decimal places.) 2.) Use Excel to find the p -value and compare it

Collect a sample of 85 observations, and inspect your data. Which of the following describes the sample and population for this data set? multiple choice The sample includes all possible sales chosen from the 85 associates. The sample includes 85 associates selected from a population of all associates that could have been examined. The sample

Answer the Quesion Please Question 2 Consider the mction f(a:) = :52 + 1. $2 a Find f' (x). I: Find the values of a: at which the tangent to the curve is horizontal. c Show that the tangents at these points are the same line
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PLEASE ONLY USE GRADE 11 FUNCTIONS MATH TO SOLVE ALL THE PROBLEMS. SHOW YOUR WORK FOR ALL (PENCIL AND PAPER). Need it in less than an hour, thank you Question 13 (4 points) Complete the table below. Function Is this Exponential Growth or What is the Growth or Decay Rate? Exponential Decay? a) V (t) = 3(1.23)' b) P (t) = 450(0.84)'Question 15 (9
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1-How can I verify if I did a multiple Regression (with dummy variables) correctly using Excel. 2-From there how can I analyze the coefficients and to determine how the variables are related? 3-How do I conduct a t-test with the information I get in excel? Do I need to use the t-statistic to calculate the t-test? 4-I know that the p-values in the

Which statement best describes the difference between "hazard" and "risk"? Question 11 options: 1) A hazard is dangerous and risk increases the level of danger 2) A hazard increases the level of danger and risk is dangerous 3) A hazard is the harm and risk is the likelihood of harm 4) A hazard is the likelihood of harm and risk is the harm

Example:If you have a savings account with an annual interest rate of 5%, and you deposit $1,000, the interest earned in one year is calculated as:

Theresa has many ICU patients in her care.Some of the patients are on feeding tubes while others are on IVs only.In addition, Theresa knows that some of the patients have diabetes while some don't.The exact breakdown is as follows: (Use these data for this question only.) FeedingTubeIV HasDiabetes5262 NoDiabetes1127 What is the probability of

Check the Show Groups box. You can also check the Boxplots box to overlay those as well. Report the means, standard deviations, and sample sizes for the change in BMI amounts for each diet.. Summary statistics: n Mean SD LEAR 79 -0.92 2.00 Orni 76 -0.77 2.14 Zone 79 -0.53 2.00 Atki 77 -1.65 2.54 pooled 311 -0.97 2.18 Statistic: Observed Mean Group

Fill in the blank: If a test is statistically significant, the results are less likely to be due to _____ and more likely to be due to a real difference between the groups being compared. 1 point insufficient data random chance bias causation

If the level of significance of a hypothesis test is raised from .01 to .05, the probability of a Type II error will Question 26Select one: a. also increase from .01 to .05. b. not change. c. decrease. d. increase

how does variance and standard deviation contribute to the T test?

1)At a water bottling facility, a technician is testing a bottle filling machine that issupposed to deliver 750milliliters of water. The technician dispenses 45 samplesof water and determines the volume of each sample. The 45 samples have a mean volume of x = 748.4 mL. The machine is out of calibration if the mean volume differs from 750 mL. The

The Lakeside Coffee Shop morning customer load follows a normal distribution. The mean number of customers is 60 and the standard deviation is 15. If the store gets more than 70 customers, they need to have a fourth staff member working. What is the probability that they will need a fourth person tomorrow? Please tell me if continuity correction

5. A casino has a game where you can spin a wheel and they will pay the player either $0, $10, $100, or $1 .000. Let x = the amount the casino pays to the player How much should the casino charge people to play if they want to make an average profit of $1 per play? {4 pts}
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In a study of 103 randomly selected male smokers, the average heart rate was found to be 115 beats per minute. The margin of error in the survey was found to be plus or minus 7.85 beats per minute. a. Compute the sample statistic from this study.Use appropriate notation to label the statistic. b. Construct a 95% interval estimate using this

Which of the following is not a characteristic of a geometric distribution? There are exactly two possible outcomes: success and failure. The probability of success is the same for all trials. There are a fixed number of observations. You should perform x trials until you observe a success. Each trial is independent.

Identify each of the variables contained in the dataset by type, and match each to an appropriate graph type. (For example, qualitative data can best be displayed with a pie chart or bar graph; continuous numerical data can best be displayed using a histogram.) Use the graphing functions in Excel to create appropriate graph of the data for each

1. [55 points] (public health) In 1972 a oneinsix random survey of the electoral roll largely concerned with studying heart disease and smoking was carried out in Whickham, a mixed urban and rural district near Newcastle upon Tyne in England. Twenty years later a followup study was conducted, with the results published in the journal Clinical
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Fill in the blank: _________ probability distributions have an infinite number of possible outcomes

Ask a new Question How much will the player expect to win given that: Prize Probability -10 30% 0 35% 2 20% 10 15%

Lead a Data Talk and reflect on the Data Talk. What did/didn't go the way you planned? The reflection s h o u l d be one to 2 para graphs. -------------------------------------------------------------------------------------------------------------------------------------- State the group of people in which y o u will lead the Data Talk. They can
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101) According to the Bureau of Labor Statistics it takes an average of 16 weeks for youngworkers to find a new job. Assume that the probability distribution is normal and that the standard deviation is two weeks. What is the probability that 20 young workers average less than 15 weeks to find a job?A. 0.01

In a study of pain relievers,25 people were given product A, and17experienced relief. In the same study,100 people were given product B, and78 experienced relief. Fill in the blanks of the four statement below to make the statement the most reasonable possible. Which Product? A or Bperformed better in the study because only ________% failed to get

duration (amount of time) is what type of data in the scenerio? a study was done to determine the age, the number of times per week, and the duration (amount of time) of residents using a local gym in san antonio, texas. the first car in the parking lot was selected randomly, and then the residents of every car in the lot around the gym was

Case Study-Quality Associates, Inc. Quality Associates, Inc., a consulting firm, advises its clients about sampling and statistical procedures that can be used to control their manufacturing processes. In one particular application, a client gaveQuality Associates a sample of 800 observations taken during a time in which that client's process

The weight of US Postal Service packages is normally distributed with a mean of 2 oz and a standard deviation of 0.5oz. If I choose two letters from my mail carriers bag, what is the probability that t hey will both weigh less that 1 oz ?

please explain this. 1) In a sample of 800 adults, 242 said that they liked sugar cereals. Three adults are selected at random without replacement. Find the probability that all three like sugar cereals. 2) In a sample of 80 adults, 25 said that they would buy a car from a friend. Three adults are selected at random without replacement. Find the

20. For people thatreally dohave the allergy, the test says "Yes"80%of the time. For people thatdo nothave the allergy, the test says "Yes"10%of the time ("false positive"). If 1% of the population have the allergy, andallergy test shows a positive result, what are the chances that this person really has the allergy? i. What is prevalence of

ANOVA An ad company was interest in determining the amount of money that should be spent in Nevada for the upcoming democratic primary.The theory is that more money should be spent on TV ads that reached more people.They decided to survey people to determine which news station they watched and then recommend to candidates where ads should be
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A random sample of 82 eighth gradestudents' scores on a national mathematics assessment test has a mean score of 279 . This test result prompts a state school administrator to declare that the mean score for thestate's eighth graders on this exam is more than 270 . Assume that the population standard deviation is 39 . At = 0.09 , is there enough

Variables such as height, weight, and test score are considered

Question 3. Consider the following KB: . Vx, y, Child(x) A Chocolate(y) Loves(x, y) . Vr, y, Chocolate(y) A Loves(x, y) -Healthy(x) . Chocolate( KitKat) . Child( Ali) 1. Convert the KB into propositional logic and show that it entails -Healthy( Ali). 2. Prove -Healthy( Ali). using FOL inference rules
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READ AND FOLLOW DIRECTIONS ! THERE ARE TWO DIFFERENT PART OF QUESTIONS THAT NEED TO BE ANSWER! SUBJECT : PART 1 Read the following Articles: In Spring 2015 a researcher published the results of a study on the benefits of eating chocolate to help lose weight. This article spurred many news media reports on the benefits of chocolate, for example,

Would the following data set be qualitative or quantitative data? - Children's favorite baseball teams. Question 20 Select one: a. Quantitative data b. Qualitative data

Please Answer Question Question 3 A quadratic of the form y = ax, a > 0, y 4 y = ax2 touches the logarithmic function y = In x y = Inc as shown. a If the x-coordinate of the point of contact is b, explain why ab2 = In b and 2ab = b Deduce that the point of contact is (Ve, ? ). Find the value of a. If two curves touch then d Find the equation of
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5. Peaches order from a farmer have a 1% unripe rate. These cannot be canned at a factory. To ensure quality, in every shipment of 360 000 peaches, a sample of 300 are tested for ripeness. If more than 2% are unripe, the shipment is rejected. b. What is the probability, using the normal approximation of the binomial distribution, that a single

3. A freight elevator, including its load, has a mass of 500 kg. It is prevented from rotating by the track and wheels mounted along its sides. When t = 2 5, the motor M draws in the cable with a speed of 6 m/s, measured relative to the elevator. If it starts from rest, determine the constant acceleration of the elevator and the tension in the
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The income distribution of a country is estimated by the Lorenz curvef(x)=0.37x 3 +0.56x 2 +0.07x. Step 1 of 2: What percentage of the country's total income is earned by the lower60%. Write answer as a percentage rounded to the nearest whole number

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