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Mathematics Questions and Answers March 14, 2022

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summarize in a few words please - The numerical variables were: 1) AverageEnvirTotal: This variable measured the percentage of total government expenditure allocated to environmental conservation. 2) IGR (Intergovernmental Revenue Growth Rate): This variable measured the growth rate of intergovernmental revenue. The categorical variables were: 1)

Consider the following hypothesis test: A manufacturer takes a sample of 125 consumers. They suspect that over 75% of consumers will buy their brand of product. The survey results are that 92 out of 125 of the consumers indicated they will buy the product. What is the value of bar p ? 0.230 0.469 0.736 0.920

If X=105, =13, and n=69, construct a 95% confidence interval estimate of the populationmean, . (Round to two decimal places asneeded.)

Calculating Standard Error of a Sample Proportion Calculate the standard error of a sample mean. A market research company conducted a survey to find the percentage of people who exercise at least 30 minutes every day. Out of 186 persons surveyed, 57 replied that they exercise at least 30 minutes every day. What is the standard error? Answer

A tournament is a directed graph where between every two distinct vertices u and v, there is either an edge from u to v or an edge from v to u, but not both. Prove that every tournament has a Hamiltonian tour. (Hint: use induction on |V |, and show that the last element can be inserted somewhere on a tour that spans the first n 1. )

Find the critical value z c necessary to form a confidence interval at the level of confidence shown below. c =0.83

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Consider the population of all students at your school. A certain proportion support removing vending machines. Your friend randomly samples 45 students from the school, and uses the sample proportion who support removing vending machines to predict the population proportion at the school. You take your own, separate random sample of 45 students,

1.Max grabs three marbles from a bag containing five white marbles and six black marbles. What is the probability that exactly two of the marbles are black?

Exit polling is a popular technique used to determine the outcome of an election prior to results being tallied. Suppose a referendum to increase funding for education is on the ballot in a large town(voting population over100,000). An exit poll of 500 voters finds that 255 voted for the referendum. How likely are the results of your sample if the

Mathematical models are used as tools to describe reality. These models are supposed to characterize the important features of the analyzed phenomena and provide insight. The normal distribution is an example of a random variable that is widely used by researchers to model real data. Researchers often model real observations using the normal

Name: Math 133: 6.1 Worksheet #3 6.1 WS #3: Discrete Random Variables and Expected Value 1. Determine whether the table represents a valid probability distribution and explain in each case. X P(X ) X P(X) X P(X) 1 0.42 55 -0.3 -8 0.2 0.18 65 0.8 -13 0.2 UI N 0.34 75 0.4 -15 0.2 7 0.06 85 0.2 18 0.2 2. The number of customers in line at a

determine the remainder when x 3 =3x 3 -x-2 is divided by (x+3)(x+5)

Apply the method of undetermined coefficients to find the particular solution to the following system that satisfies the given initial conditions. X' =4x+16y+3,y' =x+4y+3,x(0)=1, y(0)= -3 =) x)=| |
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how to write. a r language code for this question? 2. In a factory producing edible oil and marketing its product in 15 kg tins, uses five filling machines. Random samples of the packed tins were taken for each machine A,B.C.D and E were presented below A B C D E 14.85 14.28 14.16 15.25 14.60 15.00 14.42 14.15 15.30 14.84 15.25 14.19 15.10 14.82
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:1:39 SEGEEE A2_STA304H1_Q3_W2020 Question 3. ( 13 marks) A certain manufacturing rm produces a product that is packaged under two brand names, for marketing purposes. These two brands serve as strata for estimating potential sales volume for the next quarter. A SRS of customers for each brand is contacted and asked to provide a potential sale
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An 18-inch candle is lit and burns at a constant rate of 2.25 inches per hour. Use the applet below to explore this context. . Let r represent the remaining length of the candle (in inches). . Let t represent the number of hours that have elapsed since the candle was lit. 1= 2.00 20 T 41 = 1-0 16 Ar =-2.25At 12 18 r = 13.50 4 8 10 The graph shows
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A stockbroker placed the following order for a customer: -50 shares of Kaiser Aluminum at $104 a share -100 shares of GTE at $25 a share -20 shares of Boston Edison at $9 a share What is the weighted arithmetic mean price per share? Round your answer to two decimal places. Do not enter a $ sign.

could you please use R studio to answer this question thank you 2. Perform a simulation analysis consisting of 5,000 simulations in another worksheet of your workbook; however, assume that the total number of victims is normally distributed with a mean of 150 victims and a standard deviation of 50 victims. Furthermore, suppose that the transport
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HEB grocery wants to estimate the average transaction amount ($) for purchases. They know this is likely to vary by day of week, so they first look at transactions on Mondays. They know that the population standard deviation for their Monday transactions is $8.20. From their computer records they found that for 2,860 transactions on previous

For the following data from a repeated measure study , the sample mean difference is x d =4 participant x 1 x 2 A 1 7 B 4 8 C 5 3 True or false

3 options: The solution to the following item can be found in the following video or the lecture notes. Fill in the blank. According to the Complements Principle of Counting, the number of ways a certain condition can be satisfied is the total number of possible results minus the number of was the condition would be satisfied

When you are doing an experimental study where you are comparing mean scores on a measure of self-efficacy, the best research design to use would be ______________. Question 2 options: Univariate Qualitative Multivariate Quantitative

Ackerman & Goldsmith (2011) found that students who studied text from printed hard copy had better test scores than students who studied text presented on a screen. In a related study, a professor noticed that several students in a large class had purchased the e-book version of the course textbook. For the final exam, the overall average for the

Laws are needed to define maximum standards of conduct. Group of answer choices True False

The traffic flow rate (cars per hour) across an intersection isr(t)=200+600t240t^2, wheret t is in hours, andt=0 is 6am. How many cars pass through the intersection between 6 am and 7 am? ______________________________cars

Accounting Score: 0/32 0/12 answered Question 3 A local county has an unemployment rate of 4.9%. A random sample of 16 employable people are picked at random from the county and are asked if they are employed. The distribution is a binomial. Round answers to 4 decimal places. a) Find the probability that exactly 2 in the sample are unemployed. b)
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Suppose a company's revenue function is given by R(q)=-q^3+340q^2 and it's cost function is given by C(q)=320+12q, where q is hundreds of units sold/produced, while R(q) and C(q) are in total dollars of revenue and cost, respectively. A)Find a simplified expression for the marginal profit function. Use the proper variable. MP(q)=_____ B)How many

What is the income distribution of super shoppers? A supermarket super shopper is defined as a shopper for whom at least 70% of the items purchased were on sale or purchased with a coupon. In the following table, income units are in thousands of dollars, and each interval goes up to but does not include the given high value. The midpoints are

Consider the process of kintsugi. There are many correlations between chapter 3 and this process/philosophy. In this essay, please write about the relationships you see between information in the text and this ancient process. How does the value of the pottery change form the complete pot, to broken, to repaired? Where is the value of a pot: In

mktg 111 This assignment is a team assignment that is worth 25% of your overall final grade. The assignment is a- a written report that cannot exceed 10 pages in length and is worth 25% of your final grade. Each team member will receive the same mark as the overall group

Find the following z values for the standard normal variable Z . (You may find it useful to reference the z table . Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.) a.P(Z z) = 0.9744 b.P(Z > z) = 0.8389 c.P(z Z z) = 0.95 d.P(0 Z z) = 0.3315

Please explain this question, step-by-step. Thank you. This is the question: Let A and B be the events. The difference is defines to be the set of all elements of B that are not in A. Show that if A is in B then P(B-A)=P(B)-P(A) directly using the axioms of probability. 42. Let A and Bbe events. The dierence B A is dened to be the set of all
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equations of parallel and perpendicular lines Geometry E.6 Equations of parallel and perpen The equation of line u is y = =x + 9. Line v includes the point (1, 2) and is perpendicular to line u. What is the equation of line v? Write the equation in slope-intercept form. Write the numbers in the equation as proper fractions, improper fractions, or
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Consider individuals who are arbitrarily close (within ) to threshold and we observe their outcomes as above. Using regression discontinuity, we can therefore estimate the causal effect of treatment on outcome Y by the ____ of the above two items

QUESTION 14 Which of the following is the preferred guideline when embedding tables or figures within the body of a manuscript according to the most recent APA Manual? All tables and figures should be aligned with the left margin Figures should be aligned on the left margin whereas tables should be centered All tables and figures should be

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A supplier of "3.5 disks" claims that no more than 1% of the disks are defective. In a random sample of 600 disks, it is found that 3% are defective, but the supplier claim that this is only a sample fluctuation. At the 0.01 level of significance, test the supplier's claim that no more 1% are defective. Identify the null hypothesis, alternative

Diversos miembros de mi familia han culminado sus estudios en dicha institucin, por lo que s que la filosofa de esta universidad va acorde a mis valores e intereses personales. La Universidad del Occidente ofrece precisamente el nivel educativo que estoy buscando, as como la preparacin deportiva que tanto anhelo. Desde los 6 aos de edad he

Overview the concepts of effect size and statistical significance. What is the connection between these concepts? Why are both concepts important in psychological research?

Suppose P(A|B) = P(A) and P(B|A) = P(B) Which one of the following statements correctly defines events A and B? Question 32 options: None of these. They are dependent. They are mutually exclusive. They are independent

What is the formula for calculating the amount of GST on a dish that already has GST added to it

As a summary of the methods we've used this quarter, make a decision tree thatincludes the general types of NHST analysis: comparing one group to a reference value comparing two groups comparing proportions correlation paired analysis one-way ANOVA two-way ANOVA

What are the four the different types of Inventory control models?

Review the Research Paper instructions found within Week Six. The final draft of this paper will be due in Week Six. To help with the preparation, submit a one- to two-page outline containing the following headings, and include a summary of what will be discussed under each heading: Topic and statistical method. Statement of the problem. Review of

When learning about Simple random sampling is a method of selecting a subset of individuals from a larger population, where each individual has an equal chance of being chosen. This gives a bit more accuracy on data in terms of whole populations. This was interesting to learn to do in Excel b/c then you can do this when asking about opinions in

An inverse relationship between variables __________________________________ B) A direct relationship between variables __________________________________ C) A linear relationship between variables __________________________________ D) A curvilinear relationship between variables __________________________________

Let N(t) be the population of fish (measured in millions of fish) in a lake at time t (measured in years). Suppose that the lake has carrying capacity K (in millions of fish), and that H million fish are harvested from the lake each year. Then N satisfies is the following modification of the logistic equation, for some constant r. dN /dt = f(N) =

Can you help me with this? Consider the function defined by +x+1 2 2 - 1 (a) Find all vertical and horizontal asymptotes of g. (b) What is the one-sided limit of g as x approaches each vertical asymptote from the left /right? (c) Find the intervals of increase and decrease of g. Does g have any local minima or maxima? Explain. (d) Using this
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Working on project 1, when it asks 'how many observations are in this file?' How do you get the answer?

En relacin a los conceptos "presupuestos" y "contabilidad", es correcto sealar

wha is the answers Find the area of the region enclosed between f(x)=x2+x+10andg(x)= 2x2+x+ 1. a) Show your definite integral with limits and integrand (as a function of x) and give your final area answer at right. Area=/( )dxz (If your answer is a nonrepeating decimal include at least 5 significant figures.) b) Sketch the region from part a)
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Create a scatter plot to represent the data. Label both axes. Just by looking at the plotted data, state whether there appears to be a strong correlation between the two variables. Determine the equation of the line of best fit and plot the line on your scatter plot. Determine the coefficients of determination and correlation. Based on the above,
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Let Y 1 , ... , Y n i i d f ( y ) , denote the population mean E ( Y i ) by , and consider the sample mean as an estimator of (i.e., let Y = ^ ). Now, if Z N(0, 1) and with denoting its CDF, the central limit theorem provides the following approximation: P ( Y > k ) = 1 P ( k Y k ) ) = 1 P ( k n Z k n ) = 2 ( k n ) other words, the error of

7.4 Marriage data: The file agehw . dat contains data on the ages of 100 mar- ried couples sampled from the U.S. population. a) Before you look at the data, use your own knowledge to formulate a semiconjugate prior distribution for 0 = (Oh, 0w)and E, where Oh, Qu are mean husband and wife ages, and _ is the covariance matrix. b) Generate a prior
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A bivariate regression was conducted to determine the time to failure (seconds) based on the number of push-ups conducted, what term describes when the line of best fit crosses the vertical axis

A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with thedrug, 16 16 subjects had a mean wake time of 91.2 91.2 min and a standard deviation of 42.8 42.8 min. Assume that the 16 16 sample values appear to be from a normally distributed population and construct a 98 98%

Find the length of AE if BD is parallel to AE and BD is a midsegment of triangle ACE. D:(-1.5,3.5)B(2,3.5) a. square root of 12.25 b.49 c.12.25 d.7

Module 7: Submitted Homework Assignment The questions are structured so that a single letter, word, or number will suffice. Computational questions are arranged so that partial credit can be given for each step answered correctly. Always use the following model to submit your answers to the questions. EXAMPLE: Your name: Module Number: Answers Q1

Por qu la distribucin normal estndar puede usarse para encontrar las probabilidades de todas las distribuciones normales?

A grocery store manager claims that 75% of shoppers purchase a bananas as least once a month.Technology was used to simulate choosing 150 SRSs of size n= 100 from a population of shoppers where 75% buy bananas.The dot plot shoes p= the sample proportion of shoppers who bought bananas in the past month.A random sample of 100 shoppers from the store

You must estimate the mean temperature (in degrees Fahrenheit) with the following sample temperatures: 72.968.372.338.94170.569.165.76169.467.3 Find the 98% confidence interval. Enter your answer as an open-interval ( i.e. , parentheses) accurate to 3 decimal places.Assume the data is from a normally distributed population. 98% C.I. =

Question on Bayesian model with a mixture of conjugate priors Problem 4: Bayesian model with a mixture of conjugate priors Consider the following Bayesian model. Data is assumed to follow a Bernoulli distribution (i.e., binomial model where n = 1). Thus the likelihood for data y is given by: p(ye) = 0(1 -0)1-3, (1) where y is either 0 or 1.
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Find the area of the triangle given a = 6. b = 16, and C = 95 degrees, Round your answer to the nearest tenth, and enter the number only. Note:The figure shown is not drawn to scale. Question 15 (0.5 points) Listen Find the area of the triangle given a = 13, c = 21, and B = 87 degrees, Round your answer to the nearest tenth, and enter the number
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In 10 Evaluate coth (9x)dx. In 5 . . . In 10 coth (9x)dx = In 5 (Round to the nearest hundredth as needed.)
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The principal P is borrowed at simple interest rate r for a period of time t. Find the loan's future value, A, or the total amount due at time t. Pequals$9000, requals2.5%, tequals8 months Question content area bottom Part 1 The future value is $ enter your response here. (Simplify your answer. Type an integer or a decimal.)

Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and standard deviation 1. 0.8925 Z The indicated z score is (Round to two decimal places as needed.)
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Consider thepricesof properties inMelbourne fromJanuary2016to September2017, asreportedbyDomain. Table1providesdescriptive statisticsandFigure1showsgraphicaldisplaysforthesepropertyprices. Statistic Value Q1 (i.e., rstquartile) 633,000 X 1,056,697 X 880,000 Q3 (i.e.,thirdquartile) 1,302,000 Range(X) 8,915,000 MAD(X) 458,569 S2 412,063,426,191 S

A manufacturing process produces 5% defective items. What is the probability that in a sample of 70 items: a. 9% or more will be defective? (Do not round intermediate calculations and round your final answer to 4 decimal places.) Probability 01:58:54 b. less than 1% will be defective? (Do not round intermediate calculations and round your final

Find the proportion. Consider the NAEP scores, which are approximately Normal, N(288, 38). Find the proportion of students who have scores less than 350. Find the proportion of students who have scores greater than or equal to 350. Sketch the relationship between these two calculations using pictures of normal curves similar to the ones given in
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uadratic Functions Project - Profit Parabolas One of the many applications of quadratic functions in called the Profit Parabola. The Profit Parabola can be seen if we investigate the following scenario: The business manager of a 90 unit apartment building is trying to determine the rent to be charged. From past experience with similar buildings,

Please see the attachment for the matching question. Thank you. The equation of the regression line is Y = a + bX. Match the following symbols to the description to the right. \f
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The average admission charge for a movie is $8.61. If the distribution of the movie admission charge is approximately normal with a standard deviation of $0.82, what is the probability that a randomly selected admission charge is is less than $8.25?

Participants threw darts at a target. In one condition, they used their preferred hand; in the other condition, they used their other hand. All subjects performed in both conditions (the order of conditions was counterbalanced). Their scores are shown below. Preferred Non-preferred 12 7 7 9 11 8 13 10 10 9 Which kind of t-test should be used?

1. Annual per captia consumption of milk is 22.6 gallons (Statistical Abstract of the United States: 2006). Being from the Midwest, you believe milk consumption is higher there and wish to support your opinion. A sample of 31 individuals from the Midwestern town of Webster City showed a sample mean annual consumption of 24.8 gallons with a sample

Sacar el Area por los vectores U =(3,2,-1) y V =(1,2,3) GRACIAS DE ANTEMANO!

The accompanying data represent the miles per gallon of a random sample of cars with a?three-cylinder, 1.0 liter engine. ?(a) Compute the?z-score corresponding to the individual who obtained 34.5 miles per gallon. Interpret this result. The?z-score corresponding to the individual is ____ and indicates that the data value is ____
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Descriptive analytic methods can also be used to study the relationship between variables. Discuss the use of scatter diagram for this purpose. Include examples for both positive and negative association between variables.

Assume that the readings on the thermometers are normally distributed with a mean of 0" and standard deviation of 1.00"C. Assume 2.9% of the thermometers are rejected because they have readings that are too high and another 2.9% are rejected because they have readings that are too low. Draw a sketch and find the two readings that are cutoff values
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Calculate a 95% confidence interval to estimate the proportion of all clients who employed the agency for television advertising campaigns in 2014. Client Type Media Type Business/Corporation Non-Profit Government Total Print 5 20 10 35 Radio 8 9 18 35 Television 25 4 11 40 Internet 17 9 14 40 Total 55 42 53 150

I would like you to draw and write a description of the experience of this drawing, maybe in a different way to answer #1-2 l. A cool: wan supposed to bake a two-layered cake with a shape of a given acalene triangle. It turned out the customer did not want the cake the cook baked but the (line) reection of it. Help the cook rearrange the cake into
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Lowry Computer Company uses the Siakam chip in some of its laptop computers. The wholesale prices for the chip during the past 12 months were as follows: MonthPrice per chip Jan1.80 Feb1.67 Mar1.70 Apr1.85 May1.90 Jun1.87 Jul1.80 Aug1.83 Sep1.70 Oct1.65 Nov1.70 Dec1.75 Select and copy the above table and paste it into an Excel spreadsheet. In your

Las llamadas de servicio llegan a un centro de mantenimiento vehicular de acuerdo con un proceso de Poisson con un promedio de 2.7 llamadas por minuto. Encuentre la probabilidad de que: a) no ms de 6 llamadas lleguen en cualquier minuto; b) lleguen menos de 3 llamadas en cualquier minuto; c) lleguen ms de 7 llamadas en un periodo de 5 minutos.

Managers should select techniques for measuring and estimating price sensitivity based on _____. Group of answer choices the cost of the research the benefit of using a certain technique the convenience of acquiring data the rate at which data can be collected

A longitudinal project was conducted to study the executive and memory functions of elderly residents in a community. The participants were assessed every few years with a set of cognitive tests. Demographic and health information was also collected. The data set for Q1 and Q2 has been adapted from the data from that project. NOTE: Data prep may
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The following histogram gives the distribution of salaries of National League baseball players in $1000s from the year 2001. What is the shape of the distribution of data in this histogram? Please choose the correct answer from the following choices, and then select the submit answer button. Bi-modal Left-skewed Right-skewed Symmetric Uniform

Isabel Briggs Myers was a pioneer in the study of personality types. The personality types are broadly defined according to four main preferences. Do married couples choose similar or different personality types in their mates? The following data give an indication. Similarities and Differences in a Random Sample of 375 Married Couples Number of

Consider the following hypothesis test with= 0.05: H 0 := 80VSH a :80 Which of the following 95% Confidence Intervals would lead us to Reject the Null Hypothesis? i(77.7 to 80.2) ii(78.2 to 81.6) iii(80.4 to 82.1) both i and ii i, ii and iii ii only iii only i only

Jordan scored 38 out of 50 in a written test. If the mean score of all candidates who took the test is 30.65 and the standard deviation is 6.61, Jordan's score would be _____ standard deviations above the mean. Multiple choice question. 1.3 1.62 0.8 1.11

2.2 When analysing quantitative and qualitative data there are certain basics which can help to make sense of reams of data. Describe in detail the following methods of interpreting performance data

17. Repair Costs as Automobiles Age. In its 2016 Auto Reliability Survey, Consumer Reports asked subscribers to report their maintenance and repair costs. Most individuals are aware of the fact that the average annual repair cost for an automobile depends on the age of the automobile. A researcher is interested in finding out whether the variance
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What type of test: goodness of fit, homogeneity, or independence?List the hypotheses PLEASE \f
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https://www.coursehero.com/file/12276718/MExicana-Wire-Works-Ch7/?justUnlocked=1#/question How do you get to the quantities 1100,250,0, and 600 from the chart? I can't see how the chart reaches those conclusions.

suppose you perform a multiple regression to predict crime rate in a state and includes as indicators of predictions the homeownership rate divorce rate and the personal bankruptcy A- Write out the regression equation. discuss each of the variables B- discuss how you examine the correlations between the variables. which independent variables may

There are three security lines, with each line capable of scanning 290 people per hour. People arrive in front of the security lines ("waiting plaza") at the rate of 850 per hour. What is the standard assumption of a Poisson distribution for arrivals and an exponential distribution for service times: -What is the probability that there are no

The scores of students on the SAT college entrance examinations at a certain high school had a normal distribution with mean=553and standard deviation=26.9. (a) What is the probability that a single student randomly chosen from all those taking the test scores 559 or higher? ANSWER: (d) What is the probability that the mean score xof these

PLS HELP WITH THE QUESTION Section 9.4: Problem 12 Previous Problem Problem List Next Problem (1 point) Find the area of the region that lies inside both curves r = 8sin(20), r = 8 sin(0) Area =
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Coefficients Model Unstandardize Standard Standardi p d Error zed HO (Intercept) 87.833 17.047 5.152

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