S
  1. study help
  2. subject categories
  3. sciences
  4. mathematics
  5. november 2019
  6. 28

Mathematics Questions and Answers November 28, 2019

Expert-verified solutions to help you succeed

Matt is a quarterback on the local football team. In the first quarter, Matt threw eight passes. Three passes were completions for gains of 12, 17, and 6 yards, while two passes were completions for losses of 2 yards and 5 yards. The other three passes were incompletions. What was the total accumulated yardage for Matt in the first quarter

A sample of 565 low-income and 680 high-income individuals was surveyed concerning their opinions on television violence. Among the low-income respondents, 400 believed that television violence is excessive, whereas 417 of the high-income respondents believed that television violence is excessive. Answer the following questions. 1. What is the

Categorize each of the following variables Quantitative (Discrete or Continuous) or Qualitative (Nominal or Ordinal). Place an X in the correct cell of the following table. A variable can ONLY be Quantitative OR Qualitative NOT both. Variable Quantitative Qualitative Discrete Continuous Nominal Ordinal Male Height Male Weight Female Height Female

If a researcher uses pet ownership (Yes, No) with political affiliation (Democrat, Republican, Independent) in a factorial design , the study will be a three-way analysis of variance. be a 2 3 analysis of variance. have eight cells. have four marginal means

what is the mean, median, mode and standard deviation of the following: MAT220 Statistics Topping % People Like on Pizza Anchovies 18% Bacon 49% Beef 36% Chicken 56% Chillies 31% Ham 61% Jalapenos 30% Margherita Only 2% Mushrooms 65% Olives 33% Onions 62% Pepperoni 56% Peppers 60% Pineapple 42% Pork 25% Spinach 26% Sweetcorn 42% Tomato 51% Tuna 22%

You are throwing a party this weekend and want to estimate the number of sodas to buy. You know that people will only drink 0, 1, 2, or 3 sodas during your party. You know that about 10% of people will drink zero sodas, 45% of people will drink one, 35% of people will drink two, and 10% of people will drink three. Based on this information

Urn 1 contains 7 red and 3 white balls. Urn 2 contains 2 red and 7 white balls. A ball is drawn from urn 1 and placed in urn 2. Then a ball is drawn from urn 2. If the ball drawn from urn 2 is red, what is the probability that the ball drawn from urn 1 was red? The probability is ___

explain which test can be used in Do workplace wellness programs increase exercise rate? A workplace wellness program enrolls 452 participants. The number of minutes a week that the partici- pants exercise is measured weekly for the 6-week program. The data (minutes of exercise) are normally distributed

use the apple stock dataset (df_apple) Create a variable named corr_volume_close_16. This variable will hold the correlation between the volume and close variables in 2016. You have already created the year and month columns in the previous question. Filter the dataset by using the year column. Select the observations in a way that year is equal

Final Project Assignment InstructionsScenario Background: A marketing company based out of New York City is doing well and is looking to expand internationally. The CEO and VP of Operations decide to enlist the help of a consulting firm that you work for, to help collect data and analyze market trends. You work for Mercer Human Resources. The

28 (Mandatory) (2 points) Saved When making conclusions about a population based on data from a sample, researchers use ____. Question 28 options: Descriptive statistics Inferential statistics Probability sampling Non-probability sampling

https://sagepub.vitalsource.com/reader/books/9781071847336/epubcfi/6/22[%3Bvnd.vst.idref%3Ds9781071847367.i246]!/4/2[s9781071847367.i246]/48[s9781071847367.i329]/12[s9781071847367.i331]/8/6 21. DESCRIPTIVE STATISTICS EXERCISE 22. GRAPHING EXERCISE What are the do lab 21 and 22 talk about ? Password: Kristenwhite

Dr. Guess Who wants to know if students at his university believe that social security will support them in their old age. He sends his graduate students to stand in front of the library and the student union to ask questions of those who pass by. At the end of the day they have 100 responses and find that 24% believe that social security will

critique an article include responses to the following: Why did the authors use multiple regression? Do you think it's the most appropriate choice? Why or why not? Did the authors display the data? Do the results stand alone? Why or why not? Did the authors report effect size? If yes, is this meaningful? Use proper APA format, citations, and

A statistics teacher gave each of her students a spinner with four equal sized sections: one red, one blue, one yellow, and one green. She asked each of them to spin their spinner 50 times, record the proportion of times their spinner landed on red, and add the value to a class dotplot. They repeated this process until they had a plot with many

The mean of a normal probability distribution is 460; the standard deviation is 10. a. About 68% of the observations lie between what two values? b. About 95% of the observations lie between what two values? c. Practically all of the observations lie between what two values?

Select a research idea or problem you anticipate encountering in your current or future career that you could investigate using statistics.( any one research on meantal health in nurses) Locate a research article that reported descriptive statistics related to your selected research idea or problem. To locate your article, visit the University

Look back to the raw data you collected in week 1. There are 7 variables listed: Vehicle type/class Year Make Model Price MPG (city) MPG (highway)

A part of data analysis, data adjustments are not always necessary but may improve the quality of analysis. Explain

Low calcium levels (hypocalcemia) can lead to confusion, depression, achy muscles, and tingling in the fingers. This is usually treated with calcium and vitamin D supplements. A study plans to investigate the impact of a new supplement for increasing calcium levels in a population at risk for low calcium. Potential candidates complete a screening

Please send me answer in type form strictly prohibited handwritten solution don't use chatgpt Or copied content show your own work with step by step explanation.

how to plot the graph of a linear correlation in Rstudio

Toyota's director of marketing develops a questionnaire to determine client satisfaction with its products, which yields a satisfaction score between 10 and 50 for participant responses. A random sample of 90 of the company's 900 clients is asked to complete a satisfaction survey. The satisfaction scores for the 90 participants are averaged to

please provide the answer with clear explanation with step by step

(d) Use each of the three fitted trend equations to make numerical forecasts for the next three years. (Round your final answers to 2 decimal places.)

I am not understanding this question. Understanding about what additional information it is asking for.

e. Construct a table that shows only the appropriate conditional proportions for this example that is, the proportion of people in active poses given that they are men or women. f. Construct a graph that displays these conditional proportions. g. Calculate the relative likelihood of being photographed in an active pose if you are a male athlete

Suppose that the amount of time between consecutive surges in an electricity network has an exponential distribution with rate of one surge every nine days. (a) What is the probability that exactly two power surges occur in the next eight days? (b) What is the probability that the next power surge happens at least five days from now? (c) What is

Estimate the daily VaR at the 1% and 5% levels using both the parametric and historical simulation methods. Compare the results and discuss the pros and cons of the VaR as a risk measure and the pros and cons of the two methods in estimating the VaR. Assume that the weights of the two ETFs remain the same throughout your estimation process. That

A regression equation allows you to ______. Question 3 options: eliminate any error in the prediction of Y values more closely estimate the value of Y for a given X value make predictions of Y that match the actual values of y predict only the whole number values

Can you please explain questions 2 and 3, please? Would the graph for question 2 be bimodal? Also, if you don't mind, can you please draw the graphs by hand?

For the conditional statement: If the car does not run, the car needs to be checked by a mechanic. What is the hypothesis

When eighteight basketball players are about to have a free-throw competition, they often draw names out of a hat to randomly select the order in which they shoot. What is the probability that they shoot free throws in alphabetical order? Assume each player has a different name. Question content area bottom Part 1 P(shoot free throws in

Which pitfall to rational decision making occurs when a person feels "trapped" in the decision they made previously? Responses overconfidence bias overconfidence bias anchoring anchoring sunk decision sunk decision status quo

Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate for the data below Class times measured in minutes Choose the correct answer below . The ordinal level of measurement is most appropriate because the data can be ordered, but differences (obtained by subtraction) cannot be found or are

6. Create a spreadsheet prediction of the regression model from part 5. Perform a two-way sensitivity analysis and use conditional formatting to highlight the results.

Population Mean=50, Population SD=9, N=60 Round each STEP to two decimal places 1. Se _____ 2. 95% Margin of error ____ 3. 95% CI ______ to ____ 4. 99% Margin of error _____ 5. 99% CI _____ to _____

mgt 6203 Use the same "Default" dataset from the ISLR package, and create a model that uses student and income to predict default. Then use the model to identify which customer has the highest probability of defaulting on their credit card balance

how would you find the whole numbers for perfect negative correlation. Participant 1 2 3 4 5 6 7 8 9 10 Variable (x) 52 57 62 67 72 77 82 87 92 97 Variable (y) _ _ 54 _ _ _ 38 _ _ _

A study on elementary school students found a Very Strong Positive Association between the height of a student and their level of mathematical ability. Can we conclude that getting taller is a Cause of better math skill? Why or why not

IDinsight is evaluating the impact of a new fertilizer on farmer income. 10 farmers who received fertilizer harvested a total of 500 bags of beans and 10 farmers that did not use fertilizer harvested for 400 bags. If each farmer has 10 acres of land and the cost of fertilizer per acre is $16, by what percentage did the fertilizer improve farmer

Check whether each of the conditions are met. Show your work.

The physical location selected for a business will depend, to a large degree, on your multiple distribution channels. a. True b. False

X, Y and Z are independent random variables with X binomial(25, 0.3), Y normal(5, 16) and Z exponential(0.5). What is the value of E(XY Z)

Select the correct options below. Smallest shaded area: [ Select ] ["A", "B", "C"] Middle shaded area: [ Select ] ["C", "B", "A"] Largest shaded area: [ Select ] ["C", "B", "A"] Smallest standard deviation: [ Select ] ["Sampling Distribution II", "Sampling Distribution I", "Sampling Distribution III"] Middle standard deviation: [ Select ]

A researcher is interested in studying how playing video games before bed might influence sleep quality. She randomly assigns 30 teenagers to play video games right before bed for a week, and 30 teenagers to watch TV right before bed for a week, and then compares their sleep quality. What is the null hypothesis for this example

explain what the p vlaue revels about the probabiity that a study is repicable

Paolo has collected scores from 75 participants and found that the average IQ of those in his sample was 102 and the standard deviation was 14. How can Paolo find the variance in the data

This question is in three parts. a. (15) Given the premises: 1. If the steak is well done, it's overcooked. 2. If the steak is overcooked, the fire alarm will go off. 3. Either the batteries have been changed or the fire alarm will not go off. 4. The batteries have only been changed if the ladder is in the room. 5. The ladder is not in the room.

El tiempo (en minutos) entre dos llamadas telefonicas en la oficina de solicitud de servicios de una aseguradora tiene la siguiente distribucion de probabilidad exponential. f(x) = 0.5e-0.5x Cual es el tiempo medio entre las llamadas telefonicas? Cual es la probabilidad de que pasen 30 segundos o menos entre llamadas telefonicas? De que pase 1

a club has 19 members. in how many ways can they select a person to be president and a different person to be treasurer

Linear Regression In an area of the Midwest, records were kept on the relationship between the rainfall (in inches) and the yield of wheat (bushels per acre). Below is the data: (Round to four decimal places). Rain fall (in inches), x 10.8 8.9 13.2 12.5 18.8 10.9 7.0 15.6 16.0 Yield (bushels per acre), y 51.5 46.2 56.6 59.8 82.4 49.7 30.9 76.8

Heights (cm) and weights (kg) are measured for 100 randomly selected adult males, and range from heights of 134134 to 191191 cm and weights of 3939 to 150150 kg. Let the predictor variable x be the first variable given. The 100 paired measurements yield x overbarxequals=168.24168.24 cm, y overbaryequals=81.5781.57 kg, requals=0.2610.261,

SYMBOLS FOR NOTE TAKING FOR " TO SAY, STATE, DECLARE, TELL, SPEAK

Thefollowingimageillustratesthetopologyofafeedforwardneuralnetworkthathas two sensing neurons (Neurons 1 and 2), two hidden processing neuron (Neurons 3, and 4), and two processing output neurons (Neurons 5 and 6). w3,0 =0.1 1 w3,1 =0.1 3 w5,3 =0.1 w6,3 =0.1 w4,1 =0.2 w5,0 =0.1 5 w4,0 =0.1 w6,0 =0.1 w3,2 =0.2 w5,4 =0.2 2 w4,2=0.3 4 w6,4=0.2 6 (a)

help! Need help with the box. What significance level and conclusion would you recommend and why?

Hypothesis Tests A study was conducted to determine if the salaries of elementary school teachers from two neighboring districts were different. A sample of teachers from each district was randomly selected. Test the claim that the salaries from both districts are not equal. Assume the samples are random, independent and populations are normally

Hello tutors, can I please get your help with the following problem?

The Jeffersons want to paint their living room and hallway. The living room is 8 feet by 15 feet. The hallway is 10 feet long. The walls are all 9 feet high and the ceiling does not need to be painted. What is the total area in square feet of the surfaces to be painted

A researcher was comparing motivation among participants randomly assigned to one of three varying methods to increase self-efficacy (i.e., belief in one's ability to succeed). The calculated effect size was 2 = .27. What can you conclude based on this effect size? a. The difference in mean motivation scores among the groups was significantly

The accompanying table provides data on students' pre-MBA salary and post-MBA salary expectations. Define range names for each of these ranges and then use the range names in formulas to find the expected salary increase for each of the respondents

A new compound (Rageless) has been developed to decrease aggressive behavior. Researchers have been hired to test Rageless on Sprague-Dawley laboratory rats. Twenty male Sprague-Dawley laboratory rats were chosen to test the effects of Rageless on a measure of aggressive behavior. The twenty rats first received an injection of vehicle (no drug),

There are two boxes containing only red and purple pens. A pen is randomly chosen from each box. Box A purple : 7 Box A red: 20 Box B purple: 10 Box B: red 14 Name an event with either box A or box B where the probability would be 1.

Can you be thorough in your explanation process. No code

Total points 125. Submit through D2L in Word/Excel format, single or multiple files. Must show your work, answer all parts of the question, and write necessary explanations to earn full points. You must use Excel to solve this numerical problem (project). 1. The following data covers 24 periods (could be years or quarters or months) for company

On a recent exam, a group of students had a mean score of 92 and a standard deviation of 14. If Chris achieved a score of 128.4, what would be the corresponding score? Answer: The score =

For the following research situations please choose the statistical test which is most appropriate. You will not necessarily use all tests. A. One-sample T-test B. Two-sample T-test C. Analysis of Variance (ANOVA) D. Chi-squared E. Pearson's r (Correlation) 12.1. We hypothesize that employees' job satisfaction scores (1-100) are associated with

The population standard deviation for the heights of dogs, in inches, in a city is 3.7 inches. If we want to be 95% confident that the sample mean is within 2 inches of the true population mean, what is the minimum sample size that can be taken?z0.101.282z0.051.645z0.0251.960z0.012.326z0.0052.576

Hazel wants to test a hypothesis according to which the mean rating of negative judgement will be lower for unattractive individuals than for attractive individuals. The appropriate statistical test would be the a. two-tailed t-test b. chi-square c. Pearson r d. one-tailed t-test 1 points

During the 2011 NFL regular season, kickers converted 83.5% of the field goals attempted. Assume that this percentage is true for all kickers in the upcoming NFL season. What is the probability that a randomly selected kicker who will try 4 field goal attempts in a game will (let x = successful attempts: a. Convert all 4 field goal attempts

For this exercise, you will be using a variation of KIELMC, which contains panel data on housing prices in different years and includes characteristics such as distance from the house to the incinerator, distance to the incinerator, square footage of the house, square footage of the lot, number of rooms in the house, and other housing

For B, the options are z, t , chi-square, and f

Which type of distribution does the below graph illustrate? Question 14Answer a. binomial distribution b. uniform distribution c. exponential distribution

Relative current strength can be interpreted from sorting values. Strong and weak currents produce poor sorting values. Optimum currents (for that grain size) produce good sorting values. Examining your data, how would you interpret current strength indicated by your sample

For B, the options are z, t , chi-square, and f

Instructions: Select the correct past participle for each the word in parentheses. Its most recent home, Fire Station No. 6, has been ____ (visit) by many tourists sine the light bulb was installed there in 1976. a. been visiting b. visit c. visited

The expected value would be? And the player would be expected to lose?

The table provides a test of the overall model fit. The F statistic (2.101) is a ratio that compares the explained variance with the unexplained variance. The Sig. F (.005) is the p-value associated with the F statistic. If this value is less than .05, we can reject the null hypothesis and conclude that the model is statistically significant. any

Using the IRIS module, Progress Monitoring , answer and complete the following items. https://iris.peabody.vanderbilt.edu/module/pmr/Links to an external site. Using the following scenario, score the probe and graph Grayson's data. Mrs. Booker is a 4th-grade reading teacher who monitors the progress of Grayson and several other struggling

a man is shopping for a new patio umbrella. There is an 8-foot and a 12-foot model, and each is available in beige, forest green, and white. He buys a 12-foot forest green umbrella. The probability is

b) Use the appropriate command in your calculator to determine the test statistic and the p-value for this test. Give the calculator command and the values you entered as a way to show your work: Give the test statistic rounded to two decimal places: Give the p-value rounded to four decimal places: c) Use a significance level of 0.05 to make a

A trainer is teaching a dolphin to do a new trick. The probability that the dolphin successfully perfoms the trick is 65%, and the probability that the dolphin does not successfully perform the trick is 35%. Out of 20 attempts, how many times would be expect the dolphin to perform the trick successfully? What would be the standard deviation? What

Question Dmitry suspected that his friend is using a weighted die for board games. To test his theory, he wants to see whether the proportion of odd numbers is different from 50%. He rolled the die 40 times and got an odd number 14 times. Dmitry conducts a one-proportionhypothesis testat the 5% significance level, to test whether the true

Need help with this excel assignment can use phsat or levine databases below are screenshots of assignment and questions

You are planning a lesson and need to support your students in conducting research and communicating their findings to solve problems . Which ELP standard should you refer to ? A. Standard 5 B. Standard 6 C. Standard 7 D. Standard 8

The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 38 ounces and a standard deviation of 4 ounces. Use the Empirical Rule. Suggestion: sketch the distribution in order to answer these questions. a) 95% of the widget weights lie between BLANK and BLANK b) What percentage of

Using statistical package for the social sciences program (SPSS) program

A weather forecaster predicts that the rainfall in February in a local area will be between four and eleven inches but has no idea where within the interval the actual amount will be. In other words, all amounts within that interval are equally likely. (a) What kind of random variable would rainfall be? What would be a reasonable probability

CardioGood Fitness is a developer of high-quality cardiovascular exercise equipment. Its products include treadmills, fitness bikes, elliptical machines, and e-glides.CardioGood Fitness looks to increase the sales of its treadmill products and has hired the AdRight Agency, a small advertising firm, to make and implement an advertising program. The

In a recent tennis tournament, women playing singles matches used challenges on 134 calls made by the line judges. Among those challenges, 37 were found to be successful with the call overturned. a. Construct a 95% confidence interval for the percentage of successful challenges. b. Compare the results from part (a) to this 95% confidence interval

A researcher conducted a study of student-preferences in class attendance modality. The study contained responses from 3,441 people with a margin of error of 3.00%. 17% of participants favored an online mode of attendance. Calculate the confidence interval for this statistic. What is the minimum percent of all students who would favor an online

The weight of frogs in grams in a marsh population are normally distributed with mean () equal to 23 grams and standard deviation () equal to 1.3 grams. How much would a frog need to weigh (in grams) to be in the 70th percentile for weight?

20. Find the mistake Each of the following statements contains an error. Explain what is wrong in each case. (a) The correlation between the distance traveled by a hiker and the time spent hiking is r = 0.9 m/sec. (b) There is a correlation of 0.54 between the position a football player plays and his weight

Elizabeth, the human resource manager of a start-up company, believes employee salaries are increasing at the company. She would like to test the claim that the average salary at the start-up company is over 56 thousand dollars. Using the computed test statistic of 2.68 and the critical value of 1.65 , is there enough evidence for the human

Continuous/Discrete 05 During winter, red foxes hunt small rodents by jumping into thick snow cover. Researchers report that a hunting trip lasts on average 19 minutes a direction. Three variables are mentioned in this report. The third variable mentioned is Answer 1.0 quantitative and discrete. 2.quantitative and continuous. 3.0categorical.

Find the specified point estimate. Given that the first sample had 16 broken eggs out of three 365 eggs in the sample and that the second sample had 20 broken eggs out of 490 eggs, find the point estimate for the difference between the population proportion of broken eggs. Round your answer 26 decimal places.

. A researcher wishes to test the hypothesis that moving to another neighborhood decreases negative peer groups. She gathers a sample of juveniles with an adjudication conviction. a. What is the independent variable? b. What is the dependent variable? c. What is the unit of analysis? d. What is the sample?

___________ are especially valuable for showing an audience statistical trends and patterns. Question 48 options: a) Graphs b) Transparencies c) Charts d) Diagrams

Select three critical factors to consider when determining the right data to select? Check All That Apply How will the data be collected?How will the data be collected? What types of data do you need to solve a specific problem?What types of data do you need to solve a specific problem? How much data should be collected?How much data should be

Good day tutor, could you provide a detailed explanation for your chosen answer in the following questions. Thank you

Showing 400 - 500 of 1504
  • 5 / 16