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Mathematics Questions and Answers November 15, 2019

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Could you please give a thorough step-by-step explanation on how to solve the questions on the 2nd page? Use the 1st page to help understand. This is the 1st page for you to use

)Vineyard owners are experimenting with 2 new types of fertilizer: Grape Grow and Grapes Gone Wild. One owner has 200 vines facing south and 300 vines facing north. The owner would really like to know, if either method works and if so, which one increases the grape harvest. The owner has offered to let you use her vineyards this year for an

Hello, this practice project is to help me for my final math 250 statistics group project I will have in class this week. Please help so I can better understand what the expectation is for my in class project. The project is open notes and having a reference for something like this will help me get thought it. Please. Day Speed ( Megabytes) 1 667

Consider the following data: Number of Customers a Restaurant Serves per Year Year 2000 2001 2002 2003 2004 2005 2006 2007 2008 Customers 16,440 17,060 15,208 14,344 15,879 16,636 16,876 18,659 16,646 Step 1 of 2 : Find the two-period weighted moving average for the year 2006 with weights of 2 (one time period in past) and 1 (two time periods in

Perform an A/B test of the null hypothesis that the hypothetical average male time in this race equals the hypothetical average female time in this race, among all 5K runners. For this purpose, you can either use the difference_of_means function from Section 12.1 or you can create your own version of this function using pandas. Plot the histogram

Daniel is a high school student who spends time in the weekend doing his homework. At most he spends 5 hours doing school work. 5% of the weekends he studies for 0 hours, 8% he studies for 1 hour, 20% he studies 2 hours, 24% he studies 3 hours, 36% he studies 4 hours and the remaining time he studies for 5 hours. What is the probability that

Construct a 2x2 table for those 1134 who tested positive with the Pap test, and who will now undergo HPV DNA testing. Calculate both the net sensitivity and net specificity of these screens. Sensitivity is 55.4% and Specificity is 96.8%

What statistical test would you use to test your hypothesis and why? The resulting p value is 0.01, what does this mean? If during your analysis you realize that one of the cells in your 2x2 table only had four subjects which test, would you use? UTILITY OF OBSERVER- RATED AND SELF-REPORT INSTRUMENTS FOR DETECTING MAJOR DEPRESSION IN WOMEN AFTER

I have a project than I want you to help me with it; it title is [Project: Benefit-Cost Analysis of Dam Construction Projects ] Answwr it in R with its explanation: Problem: Corporations have to select among many projects that are under consideration by the management. Their primary instrument for evaluating and selecting among the available

A senior executive at Delta found the Mid-Term Assessment analysis you put together for your boss very insightful. He would like you to create two worksheets in Tableau that shows D0% and change in D0% for the first quarter of 2013-2016 relative to other airlines (OA) at each station. Use your discretion to visualize this data in the most

Regression Analysis. The manager of a fast-food restaurant wants to determine how sales in each week are related to the number of discount vouchers (#) printed in the local newspaper during the week. The number of vouchers and sales ($000s) from 10 randomly selected weeks is given below: Number of vouchers Sales 4 12.8 7 15.4 5 13.9 3 11.2 19 18.7

In a root cause analysis, the possible causes (labeled A-F) were as follows: Cause A = 80, Cause B = 50, Cause C = 5, Cause D = 20, Cause E = 30, Cause F = 15. Which of the cases with large numbers of causes would make up 80% of the cases? D, E, and F A, B, and E A, D, and E A, D, E, and F

Conduct exploratory data analysis to gain a deeper understanding of the dataset. This may involve (1) data cleansing and pre-processing, such as handling missing data, standardising data formats, and encoding categorical variables, (2) investigating the distribution of individual variables in the dataset, and (3) exploring correlations between

This example seeks to determine whether stress impacts the ability to complete basic mathematics problems (e.g., addition, subtraction, multiplication, division). Twenty-six teenagers were used in all. Thirteen teenagers attempted to solve 100 basic math problems while listening to calm/soothing music and then the other thirteen teenagers

Question Identify the type of hypothesis test below. H0:X17.9, Ha:X <17.9 Select the correct answer below: The hypothesis test is two-tailed. The hypothesis test is left-tailed. The hypothesis test is right-tailed.

(Q3e) The graphs below show the correct answers for (b) and (d). The differences between the graphs show the effect of the new drug on 500 people from Group 2. But what, specifically, do these graphs show that was reduced by 50%? Vertical bar graph showing the 10-year heat attack risk for 500 group 2 individuals. Y-axis represents the number of

Given the probability of two independent events: P(A) = 0.5 P(B) = 0.36 Determine the probability that event A will happen given that event B will happen.

Winning the jackpot in a particular lottery requires that you select the correct three numbers between 1 and 46 and, in a separate drawing, you must also select the correct single number between 1 and 36. Find the probability of winning the jackpot.

Mark uses several bags of rice for his restaurant year. The monthly demand for rice is normally distributed with an average of 10 bags and a standard deviation of 2 bags. It costs Mark $24 to place an order for a shipment of rice, and he spends an average of $10 each year to store a bag of rice. Suppose the lead time to receive a shipment of rice

read carefully as this question is similar to the first, but NOT the same. This example seeks to determine whether stress impacts the ability to complete basic mathematics problems (e.g., addition, subtraction, multiplication, division). Thirteen teenagers were used in all. Each teenager attempted to solve 100 basic math problems while listening

Select the variables from the data set in SPSS that you think will affect the attendance and that make the most sense. Hint: Use attendance as the dependent variable. Select your independent variables carefully. Hint: If you include the days of the week and/or the months of the year as independent variables, make sure you exclude one day of the

Which groups of people are at risk for plaque build-up in their coronary arteries? Question 5 options: All of the options provided Ex-smokers only Smokers only Non-smokers regularly exposed to second-hand smoke

how the mathematical treatment and design of air quality monitoring device

This mode of discourse tends to result in people being the most invested in the decision reached

Inferential statistics are needed, in order to analyze our data. What is the fundamental reason that we cannot simply eyeball the scores and come to a conclusion? _____. Question 31 options: Variability Homogeneity Educational requirements Homoscedasticity

Un ensemble de scores va d'un maximum de X = 72 un minimum de X = 28. Si ces scores taient placs dans un tableau de distribution de frquence groupe, quel serait le meilleur choix pour la largeur de l'intervalle? Options de la question 1 : 2 points 5 points 7 points 10 points Question 2 Dterminer la position dans la classe (1e, 2e, etc.) pour les

You are standing 1.5 m from a source of sound, and far from reflecting surfaces. The sound has, according to your measurement, a sound level of 70 db at your position. If you move further back to a distance of 4.5 m, what is the new sound level you would measure?

how to send an email to the voleeteer group yo thanks all of them and after the event we all going for dinner and drinks. email sample

Make up three data sets with 5 numbers each that have: a. the same mean but different standard deviations. b. the same mean but different medians. c. the same median but different means.

20 pts.) The Wechsler Intelligence Scale for Children (WISC) is a common test used to measure the IQ of children between the ages of 6 and 16 years of age. The developers of the WISC claim a population standard deviation of 15. What is the probability that this claim is rejected based if the sample standard deviation exceeds 16 from a sample of

In office hours, I tend to get three types of questions. Easy questions (e.g., What went wrong in my solution here?) require a minute to respond to. Medium questions (e.g., What good are random variables in the real world?) require 4 minutes. Hard questions (e.g., How do I become a better student?) take 10 minutes. Based on experience, about 60%

A manufacturer knows that their items have a lengths that are skewed right, with a mean of 6.1 inches, and standard deviation of 1.9 inches. If 38 items are chosen at random, what is the probability that their mean length is greater than 6.9 inches? (Round answer to four decimal places)

A set of data is plotted to create a scatterplot. The data is then linearized to form a quadratic model and then linearized to form an exponential model. The correlational coefficient for the linear model is .724. The correlational coefficient for the linearized quadratic model is .834. The correlational coefficient for the exponential model is

determine the best test and why for Do students who take Ginkgo biloba (for memory enhancement) for the 12 months leading up to the doctoral candidacy examination perform better than students who only take Ginkgo biloba for 6 months leading up to the exam- nation? Eighty-eight students participate in the study, and grades are normally distributed

A study of all first year University of Kansas City students showed the mean age of students in the first year of college to be 18.1 years old with a standard deviation of 1.4 years. Are these numbers statistics or parameters? Explain

Decide which specific threat(s) are reducing the internal validity of the following examples and provide an explanation for your decision. A researcher is interested in comparing two different teaching methods. One method is used at school A and the other method is used at school B. During the course of the study, the principal at School B is

A study of 203 police officers in an eastern state found that their mean salary was $75,500 with a sample standaro deviation of $3,000. The same study of 245 police officers in a northern state found that their mean salary was $74,500 with a sample standard deviation of $4,000. Let group 1 be the eastern state police officers and group 2 be the

Matt is running an investigation of the effects of Hubucillin on performance. He has one experimental group (drug) and one control group (placebo). His hypothesis explicitly predicts better performance in the drug group. What test is appropriate? Question 8 options: A critical t-test T-test for dependent groups One-tailed t-test Two-tailed t-test

Consider a population of raw scores with a standard deviation of 2.0. At z = 1.96 we find a raw score of 4.92. What is the mean of this population?

What is the mean, standard deviation, and average band of the CAASPP

Hi, I have been trying to solve this practice problem, but I'm stuck. We never dealt with a problem that had absolute values in exponents in class so not sure how to deal with that. If someone could please walk me through this problem, I would really appreciate it.

A botanist wishes to estimate the typical number of seeds for a certain fruit. She samples 75 specimens and counts the number of seeds in each. Use her sample results (mean = 67.8, standard deviation = 12.6) to find the 98% confidence interval for the number of seeds for the species. Enter your answer as an open-interval ( i.e. , parentheses)

like moisture sweetness 64 4 2 73 4 4 61 4 2 76 4 4 72 6 2 80 6 4 71 6 2 83 6 4 83 8 2 89 8 4 86 8 2 93 8 4 88 10 2 95 10 4 94 10 2 100 10 4 1. Using R programming from the above brand dataset, depict a Type II sum of squares ANOVA table for a regression of liking (Y ) on moisture (X1) and sweetness (X2). 2. From the above ANOVA table, state the

1 A restaurant owner wants to determine how much the average couple is willing to pay for dinner for two. The owner surveys 20 couples and finds that the average willingness to pay is $40 with a standard deviation of $12. However, the owner wants to be 95% confident that the sample mean falls within $2 of the true average. Note that z=1.96 for a

P(EB|B) = 0.4 (probability of the animal eating bamboo given that it's a bat) how is this true where is 0.4 coming from

Instrucciones: Luego de estudiar el mdulo uno, realice lo siguiente: 1. Analice qu rasgos de nuestro dialecto usted utiliza cuando habla. 2. Luego, escoja a un miembro de su familia, mencione su edad y explique algunos de los rasgos lingsticos nuestros que su familiar utilice al hablar. 3. Despus, seale qu rasgos poseen en comn y en cules se

En un estudio designado para determinar la relacin entre cierta droga y cierta anomala en embriones de pollo, se inyectaron 50 huevos fertilizados con la droga en el 4o. da de incubacin. En el vigsimo da de incubacin los embriones fueron examinados y 12 presentaron la anormalidad (p=0.24). Encuentre el intervalo de confianza al 99%

4. Use the Heart dataset from the SASHELP library for the following analysis. At 1 % level of significance, run the correct analysis to determine the difference between each gender category and their level of cholesterol, age at death, and smoking level

Kanye is on the autism spectrum and can perform complex math calculations such as multiplying 5 digits by 5 digits in his head. Based on research, which of the below statements is the most accurate? Question 20 options: It is not unusual as most people on the autistic spectrum have savant type splinter skills It is unusual as most people on the

Which statement about female-headed households is the most accurate? Of the mothers who are supposed to receive child support, about half actually get the full amount, and one-quarter receive at least some. The presence of economic pressure faced by female-headed households compared with that of male-headed households puts female-headed households

In this report, Pew Research Center describes how people's opinions change depending on how a question is posed. The poll asked Americans whether we should increase the size of the House of Representatives. People in the poll were randomly assigned to hear either the original question, or the same question with additional context. Notice how

A Statistics professor announces to the class that a majority of students who take his class earn an A. A skeptical group of students suspects that this is too good to be true. If they were going to conduct a hypothesis test, what would the appropriate hypotheses be? H 0 : p = 0.50 , H 1 : p < 0.50 H 0 : p > 0.50 , H 1 : p = 0.50 H 0 : p < 0.50 ,

You are hired as a consultant to USI to help its administration understand what factors might predict or explain Freshman students' GPA at the end of their 1st semester at USI. The administration has given you the Memo 3 Data Set file, provided in Module 4, and asked you to start by examining the variables in that data set. These are the variables

USE R STUDIO The file NFCEast.csv gives information on NFL games hosted by NFC East teams in 2019 and 2020. The variable team1 gives the name of the hosting team, the variable ELO classifies the home teams according to their probability of winning (determined from the elo_prob1 columns - E1 represents a probability of winning that is less than

what data you use to do a line graph for residents of Minamata bay Japan

Company X is not doing well, as sofa business is suffering from the latest news of harmfulness of sitting too much. Company has decided to expand her business, and uses the backroom of her sofa store to start a cat hotel, Company Hotel Y. Company needs to buy tons of cat litter, which costs $14 per bag, and estimate need to be 50 bags per week on

Poisson Probability L= 0.3 t= 8 find P( at least one) find mux and Std.devX? L=0.3 t= 5 find P( fewer than 5) find muX and Std.DevX?

Suppose that agents have a utility function that is given by U (c) = c. Agents have an income of $1, 500. If they decide not to get a vaccine, the probability of getting the associated infectious disease is 20%. However, if they get a vaccine, the probability of getting the infectious disease is 2%. Contracting the infectious disease requires

The following data represent the social ambivalence scores for 15 people as measured by a psychological test. (The higher the score, the stronger the ambivalence.) 130 172 148 123 135 108 160 128 115 152 140 119 137 133 161 Determine the variance of social ambivalence scores. Write the answer with one decimal place.

read carefully as this question is similar to the first, but NOT the same. This example seeks to determine whether stress impacts the ability to complete basic mathematics problems (e.g., addition, subtraction, multiplication, division). Thirteen teenagers were used in all. Each teenager attempted to solve 100 basic math problems while listening

I am having trouble understanding the process with steps 4, 5,6,7 . The data comes from these two links below: College_Results data: https://docs.google.com/spreadsheets/d/1gjKRpvfEeuD0xwdYtSqUVWm7OBbgr3aPv1jLdJtqMbY/edit?usp=sharing Normal_scores Data

In the data collection plan, the "how are going to measure" portion identifies the: Metric and type of metric Manner each team member must collect measures Measurement method and data collection method CTQ and CP List of team members that will measure

6.1-D: Distribution of a Proportion Example 1: Proportion Speaking a Language other than English in Oregon From the 2010 US Census, we learn that 14.6% of the residents of Oregon speak a language other than English at home. If we take random samples of size n = 100 and calculate the proportion of the sample that speaks a language other than

Hello, this is biostatistics, I need help understanding this please

Please help me break these down in COMPUTATIONAL MATH WORK Sociology researchers Pam and Ale G, were interested in studying trends in human body temperatures affected by social inequality. The latest world data shows an average body temperature of around 98 o F. The couple selected a sample of 135 Chaffey College students showing a sample mean of

Software Development and Productivity Tools Topic: Productivity Tools Research into the statistical data surrounding education in Jamaica between the years 2013 and 2018. The aim is to develop an understanding how Excel-based data visualization and analysis can address genuine educational issues. From the Statistical Institute of Jamaica Website

Thanks to an initiative to recruit top students year's an administrator at a college claims that this year's entering class must have a greater mean IQ score than that of entering classes from previous years. The administrator tests a random sample of 20 of this year's entering classes and finds that their mean IQ score is 114, with a standard

Imagine you work in the HR department of a large company. Your supervisor is interested in the mean annual performance review scores for all the employees in the sales department. The performance review scores range from 1 to 5, with 5 being exceptional and 1 being unacceptable. They have been asked by the CEO to examine the performance review

A large company is interested in opening an on-site gym for the employees and would like to know what hours the employees would prefer to have the gym open. Which data collection method would provide an unbiased sample? a.) Asking five random employees from each shift b.) Emailing an optional questionnaire to the employees c.) Asking all employees

The pro-Palestinian insurgent group Hamas has launched a violent attack against Israel. Israel in turn has respondent with attacks in order to eradicate the threat. Pro-Palestinians around the world were initially supportive of the attack, arguing that Palestinians are fighting for their independent state. That support has begun to erode as more

A prestigious research university has just been awarded a grant by a private, anonymous donor to explore the potential relationship between an individual's natural intelligence, as measured by their intelligence quotient (IQ), and that individual's annual income. Researchers, and the donor, are interested in continuing to explore whether nature or

A factorial experiment involving two levels of factor A and three levels of factor B resulted in the following data. Factor B Level 1 Level 2 Level 3 Level 1 145 80 85 185 66 93 Factor A Level 2 105 107 140 115 95 156 Test for any significant main effects and any interaction. Use . Round Sum of Squares to the whole number, value, Mean Square to

In cell H9, enter a function to calculate the standard deviation of the sales data in the range C4:C50

In your original post , answer the following: Describe the survey methods used by the article. State a major finding, claim, or result in your poll involving a sample mean or sample proportion. State the margin of error presented in the article. (You may need to scroll down and find the "survey methods" box; then click the + to open this box and

How would you set up a two tailed t test for 200 participants to determine if intermittent fasting results in more weight loss. 100 would follow intermittent fasting and the other group would not.

________ probability is used when we know the number of possible outcomes of the event of interest and the total number of possible outcomes in the sample space. Relative frequency Classical Subjective Conditional

On the ANOVA table, there is no calculation for F or a p-value for significance when: a. The experiment was not properly set up b. The residual error is negative c. There are not enough degrees of freedom to estimate experimental error d. Main effects and interactions are not significant

Let p be the population proportion for the following condition. Find the point estimates for p and q. In a survey of 1047 adults from country A, 216 said that they were not confident that the food they eat in country A is safe. Question content area bottom Part 1 The point estimate for p, , is enter your response here. (Round to three decimal

Several ovens are used to heat metal. All these Ovens are supposed to operate at similar temperatures, but the operator has doubts about this assumption. So he randomly selected 3 ovens and he noted their temperatures. Four Temperatures 1 490 498 493 494 497 2 488 484 479 477 3 490 484 488 473 471 478 (A) What method of analysis of variance should

You work for the sensory department of a plant based meat company. You have developed two prototypes of a new plant based "chick'n" burger and conducted a sensory consumer panel. This involved asking about liking of the products (using 9-point hedonic scales) as well as the appropriateness of individual attributes (using just-about-right scales).

For the following situations, please identify the most appropriate statistical method from among those that you have learned. Describe why it is the most appropriate (no more than one paragraph for each part). A population-based case-control study was performed to assess the association between diabetes mellitus history and breast cancer in

Suppose a fair die is tossed three times. Let X be the number of different faces that appear (so X = 1, 2, or 3). Find pX (k)

*I AM NEEDING DIRECTION ON HOW TO PROPERLY FIX THE CONCLUSION SLIDE TO REFLECT THE PROFESSOR'S FEEDBACK* I have included my Conclusion slide, as well as the Correlation and Spuriousness slides. Thank you! Professor's Feedback: On the conclusion slide, you need to review your interpretation of the correlation (strength and direction) between the IV

Visit the Centers for Disease Control and Prevention (CDC)Links to an external site. to perform a search for descriptive statistics. Notice there are numerous articles and videos available that include information on descriptive statistics. Choose an article to read or a video to watch then answer the following questions: What was the title of the

we known that for independent Poisson distributed random variables that X 1 Poisson( 1 ) X 2 Poisson( 2 ) and it holds that X 1 + X 2 Poisson( 1 + 2 ) Show that if X i P oisson( i ), i = 1, 2, . . . , k are independent then the conditional distribution of X1 given X 1 + X 2 + . . . X k is Binomial and determine the parameters of this Binomial

To predict how a process will run within a given range, ________. it is acceptable to provide estimators for the data that has not been collected it is necessary to have data available inside that range it is possible to predict by having a few samples outside that range it is not necessary to have data available inside that range

Expando, Inc., is considering the possibility of building an additional factory that would produce a new addition to its product line. The company is currently considering two options: The first is a small facility that it could build at a cost of $6 million. If demand for new products is low, the company expects to receive $10 million in

Using the dataset below. You are required to estimate the proportion of stay-at-home residents in Arkansas differ significantly from the mean proportion for all states (57.7%). Use = 0.05. What is the sample proportion? The answer is ____ . (Make sure two decimal places. The format is 0.99) What is the z test statistic? The answer is ____. (Make

if the levee test yields a p value of greater than.05, we report?

What type of measurement scale is The average weight gain of 6 1-year old dogs (with a special diet supplement) was 950grams last month

MCI 5100 Week 3 Project Conduct your survey among five respondents for determining their attitudes toward crime or the fear of crime. You do not need to select your respondents randomly; you can use a convenience sample comprised of family, friends, or coworkers. You also need to submit your 15 questions as part of your assignment

6.74 5.95 6.01 5.47 8.28 4.28 8.65 3.23 8.17 4.58 4.33 4.19 2.85 2.24 5.42 An online retailer states that the average number of hours its customers are online each day is 5.965.96. Suppose a random sample of size 15 of the company's customers is selected and the average number of hours that they are online each day is measured. The sample results

A certain school has 415 male students. The school nurse would like to know how many calories the male students consume per day. She samples 40 male students and finds that the mean calorie consumption of the 40 is 2610 calories per day with a standard deviation of 560 calories per day. Find the 80% interval for mean calorie intake of all the male

In your initial post, address the following items: You created a scatterplot of miles per gallon against weight; check to make sure it was included in your attachment. Does the graph show any trend? If yes, is the trend what you expected? Why or why not? See Step 2 in the Python script. What is the coefficient of correlation between miles per

Consider a fast-food restaurant that only has one drive-through windowCars arrive at the drive-through on average every 4 minutes. The service on average takes 2.3 minutes CVa = 2.5; C*V_{p} = 0.8 On average, a cars waits in line forminutes

Pretend you have two quarters with HIGH outliers. What should you do (next steps)? Be specific. Pretend you have two quarters with LOW outliers. What should you do (next steps)? Be specific

What is the Central Limit Probability where x is more than 515 for a population mean of 494, and standard deviation of 222.3 where the sample size is 39?

A bakery wants to know how many cupcakes they should prepare each day to meet the demand. They have collected data for the past 30 days and found that the daily demand for cupcakes follows a normal distribution with a mean of 120 and a standard deviation of 15. What is the minimum number of cupcakes the bakery should prepare each day to meet the

40. You can have a non significant result and have a large effect size. A) True B) False

The equation for the least squares regression line is What is the response variable?What is the predictor variable?What is the interpretation of the slope?What is the interpretation of the intercept?What is the predicted temperature in degrees F when 25 chirps per minute is measured

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