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Mathematics Questions and Answers May 19, 2023

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The following graphical display is called a _______. Math Anxiety by Gender Group of answer choices 100% Stacked Bar Chart Stacked Histogram Side-by-Side Bar Chart

Matched Problem 2 Let f(x) = x-1 (x+3)2 Describe the behavior of fat each zero of the denominator Use -co and oo when appropriate. Identify all vertical asymptotes.Matched Problem 5 If the total number of downloads D (in millions) of a new app t months after it is released is 4t2 given by D(t) = 512 + 70 find and interpret lim D(t). Matched
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Which of the following degrees are typically obtained through graduate programs? Group of answer choices Master's and Doctoral Degrees Associate Degree Bachelor of Science High School Diploma

Suppose the model is y=+x+. You have the following data from the problem set 1:iiiiyxiii= 131i= 251i= 3721Compute(X'X)^-1 X'Y and show it produces the same estimates ofandyou found in problemset 1

The starting salaries of individuals with a bachelor degree are normally distributed with a mean of $40,000 and a standard deviation of $5,000. What percentage of bachelor degree holders will have starting salaries between $34,000 and $46,000? Question 12 options: a) 76.98% b) 38.59% c) None of the options d) 50.00% e) 45.49%

What "average" value is compared to the AMSR-E surface temperature data to calculate the Sea Surface Anomaly? Looking at the legend for the map of this data, how much variation from this average value can the Anomaly Map represent

9) A child has 3 different hats, 4 pairs of glasses, 5 shirts, and 4 shorts for the weekend getaway. How different outfits can be worn if the child has to choose exactly one from each category? 10) Construct a frequency distribution table: (Round relative frequencies to 2 decimal places, convert to percentage). Enter percentages into the table,
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On a visit to a new city, there is time to take a walk in the large central park. The distances, in minutes, for walking between various locations in the park are listed in the Excel workbook available with this quiz under the tab, "Walk in the Park". Suppose the goal is to find the fastest route from location A to location H in the park. Let the
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Suppose you are an entomologist studying insects in the Coulee Region. Previous research has shown that 25% of the insects in the region possess a particular virus. In recent years it has been hypothesized that this percentage has changed due to warmer winters in the area. Thus, a local entomologist decided to carry out a study to investigate this

If a statistically significant difference exists between groups relative to a specific variable, but that difference is so small as to have little importance to the manager, the researcher failed the _____ test.

6 (15 points) The data set weight.dta consists of measurements on the weight, height, and age of 12 nutritionally deficient children. a. Construct a scatterplot matrix with all three variables and comment. b. Fit a multiple linear regression model of weight on height and age. State the fitted model. c. Is there evidence of a regression

The following table displays the joint probability distribution of two discrete randoi variables X and Y. : .
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You want to determine how many email reminders need to be sent before a certain percentage of users complete installing an update on their computers. Which variable should be the independent variable and which should be the response variable

Select all of the following that are an example(s) of the intentional misuse of statistics? A. Using a misleading scale on a graph B. Using a 0.05 p-value for significance C. Failing to disclose negative results D. Ignoring the assumptions of inferential testing E. None of the abov

A quality assurance inspector of a company that manufactures computer chips randomly chooses 100 computer chips from a shipment to inspect before it is shipped. Which sampling technique below did the inspector use

2/6/23, 9:10 AM Quiz #1 - Math 24, section 01, Spring 2023 | WebAssign 1. [-/0.09 Points] DETAILS TANAPMATH7 2.2.018. MY NOTES Find an equation of the line that passes through the given points. (Let x be the independent variable and y be the dependent variable.) (-1, -2) and (3, -4)
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2 Before moving on, we will check for and remove any outliers in the AveragePrice column. Use the 3SD method to identify and remove outliers from this column; `avocados` should now reflect the data with the outliers removed. ### Save the number of rows in the updated `avocados` dataset (after outlier removal) to Q2. - Assign the number of rows

The necessary and sufficient conditions that determine the linear MMSE estimator, C0 , are RC0=d , where R is ________ and d is __________. the correlation matrix of the data vector x ; the cross-correlation vector between the data x and desired response y the cross-correlation vector between the data x and desired response y ; the correlation

CO2 Emissions by Vehicle Type 800 - 600 - CO2 Emissions (g/mi) 400 - 200 - Sedan SUV Truck Van Vehicle Type
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What is a key requirement of students when generating and testing hypotheses

18 Mark this question Of the four graphs below, select the one that is misleading. line chart of average monthly temperature, with months January through December on the x-axis and Temperature on the y-axis. Y- axis is divided into equal blocks of 10 degrees fahrenheit. Chart of average monthly temperature by month. x-axis has all months, January

To determine the likelihood that one particular student on a campus has COVID-19, this type of argument is best suited to make that determination: Group of answer choices Deductive. Inductive generalization. Statistical syllogism. Each of the otheranswers are incorrect

4. Suppose the model isy=+x+. You have the following data from the problem set 1:iiiiyxiii= 131i= 251i= 3721Compute(X'X)^-1 X'Yand show it produces the same estimates ofandyou found in problemset 1. Write the vector Y and the matrix X for this dataset. What did you learn in this

For a sample of size 41, state the mean and the standard deviation of the sampling distribution of the sample mean. mean of the sampling distribution of the sample meanwhen n = 41

I don't have a computer but want to compare the stress scores of 3 groups. I should a. calculate the F value and compare it to the critical value in the F distribution table b. compare each group mean with the others c. conduct an independent observations t-test instead - it's easier d. none of the above

I need a typed answer as well as soon . Only typed answer by keyboard needed . Solve urgent please I will surely give a helpful rating for your answer if you solve fast and correctly. Exercise 3. Prove that, if S 2 {121, . . . mm} is a set of linearly independent vectors of a vector space V, then so is every nonempty subset of S
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Use a stem-and-leaf plot to display the data, which represent the numbers of hours 24 nurses work per week. Describe any patterns. 40 40 42 48 30 40 36 54 32 36 40 35 30 26 40 36 40 36 40 33 40 32 38 29 Determine the leaves in the stem-and-leaf plot below. Key: 313 = 33 Hours worked A
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Consistent with their multimode model, Johnson and Heinz (1978) found that ___ attentional selection is less costly than ___ selection. a. conceptually-driven; data-driven b. data-driven; conceptually-driven c. long-term; short-term d. short-term; long-term

Probability | Scores 0.05 0 0.5 2 0.05 8 0.1 10 0.3 Find the expected value of the above random variable. Question Help: [*] Video
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I have completed a one numerical variable study on proper age to use social media. following are the results I used 25 values listed below which indicates the proper age for children to be exposed to social media 8, 8, 10, 10 ,10, 11, 11, 12, 12, 12, 12, 12, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15 I need to determine 1 - the mean,

Use the three-read strategy to understand the problem, and then use the given information to construct a 95% confidence interval for the difference in mean braking reaction time for the two populations, cell phonedrunk (Use the t -critical value 1.991

Fiscal Year 2020 Benefits (24% of Total FY2020 Salaries/Wages salaries) Sal/Wages/Ben 91,225 21.894 113,119 155.925 #NAME? #NAME? 190.575 #NAME? #NAME? 105.300 #NAME? #NAME? 163.013 #NAME? #NAME? 248,775 #NAME? #NAME? 288.900 #NAME? #NAME? 337.050 #NAME? #NAME? 22.550 #NAME? #NAME? 53.663 #NAME? #NAME? #NAME? #NAME? #NAME? 1,706,688 #NAME? #NAME?
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Whether or not a given prediction is updated depends on the relative "precision-weightings" of both the prediction and the incoming error signal. Whether or not a given prediction is updated depends on the relative "precision-weightings" of both the prediction and the incoming error signal. True False

Regression analysis captures the relationship between only two distinct variables. Group starts

Figure 1 shows the time trends for U.S. income & , investment (i) and consumption (c) and Figure 2 displays the OLS regression results from regressing c on y and a time trend t. LO 1950q1 1960q1 1970q1 1980q1 1990q1 2000q1 2010q1 2020q1 date_byq C reg c y t Source df MS Number of obs = 282 F (2, 279) 99999.00 Model 134. 427063 2 67.2135313 Prob >
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A screening test for lung cancer using annual CAT scans is developed with the intention of screening heavy smokers. 100 middle-aged men with a diagnosis of lung cancer and 100 middle-aged men without lung cancer were evaluated with this new test; the scans were read by radiologists. The proportion of those with a negative scan who who do not have

The results of 20 coin tosses are H T H H T H T H T T T H T H H T T T T T What is the experimental probability of getting heads (H)

The method by which national anchor norms are established begins with _____. Multiple choice question. the computation of percentile norms for each of the tests to be compared acquiring an adequate sample size for statistical analysis of each of the tests to be compared the comparison of similar items in the tests to be compared obtaining scores

Figure 5-9 Geological time scale. 570 mya 500 mya 430 mya 395 mya 345 mya 280 mya 225 mya 190 mya 136 mya 65 mya 0 mya ERA PRE-CAMBRIAN PALEOZOIC MESOZOIC CENOZOIC PERIOD Cambrian Silurian Carboniferous Triassic Cretaceous Quaternary 570 430 345 225 136 2.6-present Ordovician Devonian Permian Jurassic Tertiary 500 395 280 190 65-2.6 EPOCH Holocene
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9) A child has 3 different hats, 4 pairs of glasses, 5 shirts, and 4 shorts for the weekend getaway. How different outfits can be worn if the child has to choose exactly one from each category? 10) Construct a frequency distribution table: (Round relative frequencies to 2 decimal places, convert to percentage). Enter percentages into the table,
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Formulate a system of equations for the situation below and solve. A theater has a seating capacity of 900 and charges $3 for children, $5 for students, and $7 for adults. At a certain screening with full attendance, there were half as many adults as children and students combined. The receipts totaled $4700. How many children attended the show?

How much is the maturity value if Jay will borrow money worth P5000 at 67 % simple interest for years and 6 monille
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pretend you have given an assessment to your students. Make up 15 hypothetical test scores (I suggest selecting a good variety of scores). Use these test scores to organize the data and find the mean, median, quartiles, and range. Analyze your result and, in some sentences, answer the following questions and reply to 2 peers. a) What can this

Math 245 Activity 2 Section 10.1 & 10.2 Name Maggie LaCompte Classify each triangle by its angle and side properties. 1. 2. 3. 5. 6. 7. B. 9. 10. 1 1
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Internet 2. The percent of Americans that use the internet is shown in the table. 1990 year O Year Users (%) a. Find the linear equation of the line passing through years 1995 and 2001 by hand (2 places for final equation) BY HAND - SHOW WORK 1995 9.2 1996 16.4 1997 21.6 1998 30.1 1999 35.9 2000 43.1 2001 49.1 b. (4 pts) Find the linear equation
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__________ can be produced either directly or by social mediation. Group of answer choices a. Peer approval. b. Reinforcers. c. Attention. d. Discriminative stimuli. Quiz saved at 12:26pm Questions AnsweredQuestion 1 AnsweredQuestion 2 AnsweredQuestion 3 AnsweredQuestion 4 AnsweredQuestion 5 AnsweredQuestion 6 AnsweredQuestion 7 AnsweredQuestion 8

To determine the statistical power, we need to know ____ and ____. Group of answer choices Significance level and effect size

A classroom of students has their heights measured (in inches) for statistics investigation. The tallest student in the class is 71 inches tall. One student is assigned to record all the values. That student made a mistake when recording one of the values. When they meant to record the 71, they accidentally entered 711. What is the affect of this

The amount that households in a particular community spend on food in a month is normally distributed with an average of $300 and a standard deviation of $50. About 30% of the households will spend more than how much on food in a month? Question 16 options: a) $500 b) None of the options c) $335 d) $326 e) $274

c. Interpret the meaning of b 0 and b 1 in this problem. Choose the correct answer below. A. The Y-intercept, b 0, implies that if the annual revenue is zero, the franchise value is equal b 0, in millions of dollars. The slope, b 1, implies that for each increase of 1 million dollars in annual revenue, the franchise value is expected to decrease

I have been stuck on this question (specifically part A) as each time I try to compute on statcrunch I am given an error message stating that "no rows in resulting data set". I have been using the Two Sample T hypothesis test and have had no luck. Am I approaching the question incorrectly? Problem 4. Zoeys: Questionnaire The manager of Zoeys, a
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Religion Percent of US Population Protestant Catholic Mormon Jewish Muslim Buddhist Hindu None 45.6 21.8 1.3 1.4 0.8 0.8 0.5 23.3 2. What level of measurement (nominal/ordinal/scale) is the variable "Percent of US Population", and why

NSTRUCTIONS 1. Show ALL WORK to receive ANY CREDIT.1. A sociologist wants to estimate the average number of hours per week American adults spend watchingtelevision. A random sample of 400 adults are selected from Lexington, KY and record the number of hours eachwatch TV per week. The sample yields a mean of 17 .1 hours. A. What is the response

Select all of the following statements that are true about ordinal data? A. It has a meaningful order but lacks equal intervals between measurements. B. It has equal intervals between measurements but lacks a meaningful order. C. It has both a meaningful order and equal intervals between measurements. D. It has neither a meaningful order nor equal

A data analytics team sorts customer data by interests. Then, they group that information into broader concepts, such as customers who are interested in travel and customers who are interested in cooking. Which data problem type does this scenario describe? 1 point Finding patterns Making predictions Discovering connections Identifying themes

1. Utiliza la plantilla de reporte de estatus Scrum y llena las secciones correspondientes con base en las instrucciones especificadas. Haz clic aqu para descargar. a. Muestra la meta de los sprints. b. Describe un resumen del progreso actual. c. Muestra el proceso de evaluacin de cambios

Does this average significantly change if the height of the child is higher than the average height of children? Explain

The contingency table below shows the results of a survey of video viewing habits by age. Viewer Age Video Viewing Platform Preferred Row Total Mobile/Laptop Device TV Screen 18 to 34 37 22 59 35 to 54 13 13 26 55+ 6 9 15 Column Total 56 44 100 Find the following probabilities or percentages: (a) Probability that a viewer is aged 18 to 34. (Round

A random sample is a poll sample that does not accurately represent the population being polled. True False

What should be done to select a value for for exponential smoothing? use a small when the series varies substantially use a value between 0 and 1 use a large when the series has little random variability all of these are correct

An analyst seeks to create a set of dummy codes to represent highest level of education achieved. There are five different levels - Less than a high school degree, High school diploma, Some college, Bachelor's degree, Advanced Degree. She wants less that a high school degree to serve as the reference group, which of the following statements are

1. Evaluate the following by showing at least one step with factorials. a. 13C10 b. n!/(n-n-2)!(n-2)! 2. 2. Given S = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, A = {2, 4, 6, 8, 10} and B = {5, 6, 7, 8, 9}, answer the following; a. A' b. A n B c. n(A u B) d. (B n A')' 3. A pizza shop has 11 different toppings. a. In how many ways could you select

Show the temporal distribution of crash counts at the hourly, day of the week, and monthly levels

Please answer the questions in the screenshot. Briefly answer the following: N . What does a correlation show? . What is the strength and direction of r =.25? . How would you describe the relationship that is depicted by a circle on a graph? . What does it mean that hours spent studying and hours spent watching tv is negatively correlated? .
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Which of the following types of discovery does an organization find when they determine there are co-occurring associations in their data? Question 46Select one: a. Novelty b. Correlation c. Association d. Class

A student measures the distance a toy car travels as a function of time. The following data is collected: Time (s): 1, 2, 3, 4, 5 Distance (m): 2, 4, 6, 8, 10 Based on the data, what can be concluded about the relationship between distance and time? Group of answer choices Distance is inversely proportional to time. Distance is directly

T/F: As an investigator, you can conclude that there is a causal relationship between an exposure and outcome, if you have eliminated bias, confounding, and random error. Group of answer choices True False

What piece of information do you need to decide whether a t test or a z test is most appropriate? Group of answer choices Whether you are looking for relationships or differences. Whether your test value is standardized or not. Whether you have the population mean. Whether you have the population standard deviation

If you varied the brand of detergent to determine which detergent cleaned clothes best, the independent variable would be Group of answer choices the fact that all the washing machines used the same cycle. the fact that all the temperatures were the same. the brand of detergent. how clean the clothes got

I need a typed answer as well as soon . Only typed answer by keyboard needed . Solve urgent please I will surely give a helpful rating for your answer if you solve fast and correctly. please solve in interval notation ist K Solve the inequality algebraically. Graph the solution set. Verify your results using a graphing utility. x +1 cn | 3 Select
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Find the probability that a person randomly selected from only the men in this group responded "has gone too far." Hasn't Gone Far Enough Has Been About Right Has Gone Too Far Total Men 35 41 14 90 Women 53 30 7 90 Total 88 71 21 180

A Subtraction Math Talk Watch A Third-Grade Number Talk. Answer the questions below. 1. Describe the "teacher moves" used in the number talk. 2. What is noticeable about the methods that the students use to solve the problem? What are some common strategies? 3. What was interesting? What was surprising? MEC Number Talks 3rd grade - YouTube

Which of the following is a function of the samples of data you collected and is obtained from the computer statistical output? a) significance level b) alpha level c) probability value d) beta level

Interpret this interval. Choose the correct answer below. A. With 10% confidence, the mean microvessel densities before and after the stem cell transplant fall outside this interval. B. With 90% confidence, the mean microvessel densities before and after the stem cell transplant fall in this interval. C. With 10% confidence, the mean difference in

Flag for Review |Normal Color Scheme Small Font Which of the following procedures must be performed in order to evaluate a student's progress in mathematics during the course of an academic year? O A. prioritizing instructional objectives O B. administering a standardized achievement test O C. collecting baseline data O D. comparing student

The distribution of actual weights of wedges of cheddar cheese produced at a dairy is normal with a mean of 11.9 ounces and a standard deviation of 0.18 ounces. (Round to 2 decimal places for all z-values and round all other answers to 4 decimal places, if needed.) a) The probability that a randomly chosen wedge of cheddar cheese is greater than
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For a time series with relatively little random variability, we should use larger values of the smoothing constant to provide the advantage of allowing the forecasts to react more quickly to changing conditions. True False

what is type one on the enneagram test and what does that mean

census bureau report from 2016 says that 14.5% of Americans lived below the poverty line. As 2016 was not a census year, this information is based on a sample of 50,000 randomly selected Americans. Compute an (approximate) 99% confidence interval for the percentage of all Americans who lived below the poverty line in 2016

2. What's the rate (rate=distance/time) of movement of the plate the Hawaii chain sits on (Pacific plate) from when Niihau was created, to when Hawaii was created? Make sure answers are in meters/years
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www.rossmanchance.com/applets/20_1/regshuffle/regshumnic.fun 1. Use default data FootHeight. (Height is the Response var; Footlength In the Explanatory variable.) From the scatterplot describe the direction and strength of the correlation

Help question 1 The formula B = 31a is used to estimate the minimum furnace output, B, in BTUs, for a modern house with the amount of square feet of flooring, a. Determine the minimum furnace output for a 2300-ft- modern house. The minimum furnace output for a 2300-ft modern house is BTUs
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An experiment is performed to evaluate the effect of 5 different drinks (water, gatorade, 50% gatorade in water, powerade and 50% powerade in water) on urine flow rate of 100 men running their first marathon. The men were randomly divided into five equal groups of 20 each, requested to empty their bladders before the race, to drink 8 oz. of the

It occurs when the process of selecting the sample systematically excludes or over-represents certain groups or elements in the population. What type of bias is this? a. Selection Bias b. Response Bias c. Measurement Bias d. Sampling Frame Bias

Sampling bias occurs when the sample population is not representative of the target population, leading to a skewed or unrepresentative sample. In the case of the supermarket survey, sampling bias could have influenced the results by including a disproportionate number of adults who eat more bread than the general population. For instance, imagine

A group of children played a balloon dart game at the county fair. The children took turns at the game, and the first 9 players scored 230, 540, 420, 430, 540, 560, 275, 50, 250 Joey is the 10th player, and his score is recorded with the first 9 scores after his turn. If Joey wants his score to be higher than the 70th percentile of all 10 scores,

______ is a process that repeatedly sets values for each random variable (e.g., task durations, costs, etc.) by sampling from each variable's respective distribution. A. PERT B. Monte Carlo simulation C. Project buffer strategies D. Schedule buffer strategies

1 1 2.3.3. (3) Determine Whether (2) is in the span of (I) and ( 3 0 1 1 0 3 span of 2 , 2 , 3 ? (C) Is _1 in the Span of 2 0 4 _2 1 ). (b) IS (2) in the 1 2 ? HQMH >|>Io 0 1 D ' 3 ' 1 O 1
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The effect of adding fluoride to a community's water supply was tested by comparing annual records of cavities per patient in local dentists' offices for 6 years before and 4 years after the fluoride was added. This is an example of which type of research? A. interrupted time series B. regression discontinuity C. propensity score matching D.

Consider the function f(x,y) = 4.3 In( x ) + 3 y + 5.5 Find the value of the slope (dy/dx) of its level curve at the point where x = 7.6 and y =6.4 and enter it below.
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history of earthquakes in California with Team-Pair-Solo (The team pools their knowledge and skills to try a new procedure. After success as a team, they break into pairs and the pair completes the procedure. And finally, after much support and modeling, students are ready to perform the skill independently.) 1. Team work together to solve

The minimum sample size needed is 3131. Part 2Is this sample size practical? A. NoNo, because the sample size is excessively large to be practical for most applications.thesamplesizeisexcessivelylargetobepracticalformostapplications. B. Yes, because the sample size should be as large as possible for most applications. C. YesYes, because the sample

In a survey of 3,539 female university students ages 18 to 22, 401 say they live in off-campus housing. Construct a 90% confidence interval for the population proportion. (0.104, 0.122) (0.103, 0.123) (0.099, 0.127) (0.113, 0.144)

If you want to know what are the chances that your data is from a population with a very specific mean what type of test should you run? Question 32 options: Variance test (F test) One sample t-test Shapiro Wilkes test Two sample t-test

Run a one-way between-subjects ANOVAs with variables. 2. If appropriate, comment on whether you met the assumptions of a one-way between subjects ANOVA. If there are no assumptions to test, state that here. 3. Write up the results of the ANOVAs in APA style. 4. In your own words (not APA style), summarize the results of the ANOVA. Variables: GPA

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State whether or not the given assignment of probabilities to individual outcomes is legitimate, that is, satisfies the rules of probability. If not, give specific reasons for your answer. Choose a college student at random and record gender and enrollment status: P(female full-time) = 0.44, P(female part-time) = 0.56, P(male full-time) = 0.46,

Grear Tire Company has produced a new tire with an estimated mean lifetime mileage of 34,500 miles. Management also believes that the standard deviation is 3,500 miles and that tire mileage is normally distributed. To promote the new tire, Grear has offered to refund a portion of the purchase price if the tire fails to reach 30,000 miles before
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In an experiment on concept formation, participants were shown cards with three letters: Trial 1: [O,D,T]; Trial 2: [D,X,O]; Trial 3: [A,T,O]. On a subsequent test, they were asked to select a card that would best continue the series: (a) [D,T,X,] or (b) [X,O,A]. Edgar chose card ____, consistent with the ____. Question 29 options: card (a);

Which of the following sampling techniques exemplifies a simple random sample? selecting 25 men and 25 women by drawing names from a "men's" hat and a "women's" hat selecting the first 50 people to enter into a baseball stadium selecting all households within a certain community selecting 50 names drawn at random from a hat without replacement

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