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Mathematics Questions and Answers December 18, 2021

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Assume a 0.05 level of significance. Nurse NCLEX Score Final Grade 1 440 (University) 87 2 480 3 87 535 87 4 460 88 5 525 88 6 480 89 7 510 8 530 89 9 545 10 89 600 89 11 495 12 90 545 13 90 575 14 90 525 15 91 575 16 91 600 17 91 490 18 92 510 19 92 575 20 92 540 21 93 595 22 93 525 23 94 545 24 94 600 94 25 625 94 a. Use SPSS to obtain the
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Please show your steps and explanations. Thanks! Find the closed form of the following recurrence relation and show your work. You can either upload a file or format it inside of Gradescope. Your answer should not be in BigOh notation show the relevant exact constants and bases of logarithms in your answer. You should not have any summation
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http://htmlpreview.github.io/?https://github.com/andrewpbray/oiLabs-base-R/blob/master/sampling_distributions/sampling_distributions.html(Links to an external site.) On your own So far, we have only focused on estimating the mean living area in homes in Ames. Now you'll try to estimate the mean home price. 1. Take a random sample of size 50 from
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A random sample of50binomial trials resulted in20successes. Test the claim that the population proportion of successes does not equal 0.50. Use a level of significance of 0.05. (a)Can a normal distribution be used for thedistribution? Explain. Yes, np and nq are both greater than 5. No, np is greater than 5, but nq is less than 5. No, nq is

what is the equation for the regression line that predicts home equity using credit score as the explanatory variable?What is the interpretation of the slope?What is the interpretation of the intercept? Create scatterplots using the data in the spreadsheet linked above and display th equation for the regression line. What is the equation for the
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Started on this problem but I'm not sure what to do next 2. A manufacturer of televisions subjects the equipment to a comprehensive testing process for all essential functions before the television leaves the factory. If the probability of passing these comprehensive tests is .95 and if 10 televisions are randomly selected what is that probability
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Please help me with these questions 1) Come up with a 2 x 2 contingency table for which 131 =152 , and for which the row and column totals are not the same. Now calculate x\". Are you surprised? Why or why not? 2) You want to examine competition in barnacles. You examine two species and count the number of each species at the low and high water
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P(A or B) = P(A) + P(B) would be true if events A and B are mutually exclusive

what would be a good recommendation and plan of action based on key statistical results and cost benefit analysis using the histogram and multilinear regression analysis

In this question you will compare QR factorization and SVD of a matrix. Let A 2 2 (1) Find the QR decomposition of A. Namely, find an orthogonal 2 x 2 matrix @ and an upper triangular 2 x 2 matrix R such that A = QR. (2) Find an SVD of A. Namely, find 2 x 2 orthogonal matrices UA, VA and a diagonal matrix A such that A = UAEAVT (3) Find an SVD of
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An exceptionally high or low value in a distribution is referred to as a(n)

Consider the graph of the function f (x) = x- - x - 20. (a) Find the equation of the secant line joining the points (-3, -8), and (5, 0). (b) Use the Mean Value Theorem to determine a point c in the interval (-3, 5) such that the tangent line at c is parallel to the secant line. C = (c) Find the equation of the tangent line through c.Determine
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Which statistical test models analyzes the proportions of variables by comparing observed values against expected values? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a Linear Regression b Contingency Table (Chi Square) c ANOVA d t-Test or z-Test

qualitative and quantitative data collection procedures

Construct a frequency distribution table for the given data below. A point will be given for every correct procedure in your output. The following data are the recorded birth weight, in terms of mg, of babies born for a period of one month at certain hospital in the region. 2225230023012045302729841987200020012085

True or False: Although predictive models are, in general, judged solely on predictive performance, a segmentation model may also provide a human understandable set of segmentation patterns, as in this statement: "middle-aged professionals who reside in New York City on average have a churn rate of 5%

Because of an economic slump, a company finds that its annual profits have dropped from500 500thousand dollars in 2006 to100 100thousand dollars in 2009. If profit follows an exponential decline, what's the expected profit in 2010?

A new drug is created to help people with depression. When testing the drug what are the null and the alternative hypothesis?

Which of the scatterplots to the right show a) no association? b) a negative association? c) a linear association? (1) d) a weak or moderate association? e) a very strong association? Question Viewer . . . (2) a) Which scatterplot shows no association? O A. 2 O B. None of these scatterplots (3) O C. 3 O D. All of these scatterplots OE. 1\f
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How are the roots of G(x) = 0 related to the points of the k-cycle in the function f(x)

A statistics class was asked to fill out a survey on grade point average (GPA) and Response: GPA (y) standardized test scores. A regression was run to find out how well Math and Coef SE t-ratio Prob > |t| Verbal scores could predict GPA. Use the output to the right to complete parts a 0.574964 0.253897 2.26 0.0298 through c. 0.001327 0.000512 2.59
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Trusting The Results If you were to read the results of a study showing that daily use of a certain exercise machine resulted in an average 10-pound weight loss, what more would you want to know about the numbers in addition to the average? (Hint: Do you think everyone who used the machine lost 10 pounds?) b). WHAT'S IN A SAMPLE? Why is it

Research Question ? Describe the sampling strategy for the research study? Describe the variables that were observed and how they were assigned to groups? Describe the quantitative results of the study using only the final test statistic and the p-value? Interpret the p-value and the probability of the sample result being generalized to the
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What is the median of the following dataset of numbers [1, 7, 9, 13, 16, 16, 19, 20, 24, 29, 35]? a. 1 b. 35 c. 16 d. 24

What do you call the process wherein there will be three researcher to facilitate an interview? Question 15Answer a. Theoretical triangulation b. Methodological triangulation c. Investigator triangulation d. Concurrent triangulation

Una empresa tiene 50 trabajadores de las que 28 son mujeres. Se encuesta a 30 personas de la empresa tomadas al azar. Hallar la probabilidad aproximada de que 20 de los encuestados sean mujeres. Tip: Utiliza la distribucin Hipergeomtrica Seleccione una: 1.00 0.042 0.66 0.056

As a maintenance inspector, Joe's job is to inspect aircraft and report defects. Based on the examples provided in chapter 2, analyze Joe's actions from the perspective of ethical foundations that were discussed in Chapter 1

On completion of an ANOVA using three groups, and find the following; Group 1 (1.44 ml/min, SD 0.11), Group 2 (3.22 ml/min, SD 0.09) and Group 3 (3.33 ml/min, SD 0.13). Group 1 v Group 2 (p = 0.02), Group 1 v Group 3 (p = 0.01) and Group 2 v Group 3 (p = 1.00). How would you report this (choose all that apply)? Question 40 options: Group 1 (1.44

BTDC means ________. Group of answer choices beyond top dead center before top dead center bottom top dead center Any of the above

I would like to check if my work and answer is correct. h = log c , - Ga = 4 = mx+6 y- logh V x = a M = + 62 = =0. 1315 6 = dog C Bozargmin ni,(4 - (01315 ) X i - b) 2 Po let I be objectivefunctionfor above optimization problem to mail y : + ( - 0 . 1 3 1 5 )
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A study of 14 year old girl's DNA indicates that she may be diabetic by the time she is 40 years old and also may develop heart disease by the time she is 55. Which concept is being explored here ? Group of answer choices Probability Accuracy Likelihood Poisson Distribution

Answer this question and show the process 1. Consider the following information (show your calculations) (10 points) Probability of State of Economy Stock A Stock B Stock C 0.2 0.24 0.36 0.55 Boom 0.55 0.17 0.13 0.09 Normal 0.25 0.00 -0.28 -0.45 Bust a. If your portfolio is invested 40% each in A and B and 20% in C, what is the portfolio expected
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A mixed method purpose statement must include a rationale for combining qualitative and quantitative data. Group of answer choices True False

Which of the following is the null hypothesis for testing the difference between two means for statistical significance? Group of answer choices H0: GRE-V = 476 H0: M = F H0: YX1X2 = 0 h0: XY = 0

Variables and Types of Data Please discuss about 1. The difference between the qualitative and quantitative data with examples. 2. The two types of statistics, and give a reason why we use inferential statistics instead of descriptive statistics. Give example to justify your reasons

Which of the following statement is false a. Regression estimates the relationship between the target and the independent variable b. Regression helps predict real/continuous data c. Regression is used to find the trends in data d. Regression usually mimics human thinking ability in a making decision

To what new value should f(2) be changed to remove the discontinuity? f(x) ={ 2x+2, x <2 { 8 x=2 { x+4, x>2

I know I have done this before, can you please show me the formula nd the answer? Determine the expected count for each outcome. n = 972 Q i 1 2 3 4 Pi 0.12 0.45 0.23 0.20 The expected count for outcome 1 is . (Round to two decimal places as needed.) The expected count for outcome 2 is (Round to two decimal places as needed.) The expected count
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Read and watch the action items in the Week 1, 1.4 Analytics - Descriptive Techniques module . These resources are provided to study and complete this submission. A consulting agency has a specialty of supporting global government entities in a public-private partnership to plan and implement infrastructure improvement needs. This consulting

Assume that adults have IQ scores that are normally distributed with a mean of 99.5 and a standard deviation of 21.1. Find the probability that a randomly selected adult has an IQ greater than 134.7.

Background Recommendations on preventing primary cesarean delivery removed the previously defined time limits for latent labor (defined as ending at 6 cm) and urged clinicians to avoid cesarean delivery for labor abnormalities in the latent phase. However, relatively little is known about the implications of labor curve abnormalities from 4 to 6

When an observer records information in the wrong order, this is known as an error of?

Name: Box & Whiskers Plot a) Which number represents the 25th percentile of the given data? b) Which number represents the 50th percentile of the given data? c) Which number represents the 75th percentile of the given data? d) What percent of data is between 4 and 11? EXERCISE 5: Word Problem Twenty of Ms. Wong's math students recently took an
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Select the correct answer below: Or is significant because it is between the positive and negative critical values. O r is not significant because it is between the positive and negative critical values. O r is significant because it is not between the positive and negative critical values. O r is not significant because it is not between the
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Complete the table below. (Round your answers to two decimal places.) Capital, K Labor, L Output, Q Fixed cost, FC Variable cost, VC Total cost, TC Average fixed cost, AFC Average variable cost, AVC Average total cost, ATC Marginal cost, MC 2 0 0 $400 $ 0 $ 400 X X X X 2 1 100 $ 400 $200 $ 600 $ 4 $ 2 $ 6 $ 2 2 2 800 $ 400 $ enter your response

1.Find the indefinite integral by using the substitution x= 4 sec(theta) using C for the constant. integral[(sqrt(x 2 -16))/(x)]dx 2.Find the indefinite integral by using the substiution x= tan(theta) using C as the constant for integration. integral[(x 2 )/(1+x 2 ) 2 ]dx 3. Find the indefinite integral using C for the constant of integration.

Q. Here are some data loosely based on tree counts collected in ecology. Is there a difference in tree composition based on landscape position? PLEASE USE R-software. Species Oaks Maple Beech Pine Tulip Other Landscape Position Mid-Slope 80 20 120 5 20 55 Valley Bottom 15 5 85 5 10 30
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A well-designed customer visit program offers the following benefits except Question 49Select one: a. interactive conversation. b. inclusion of multiple decision makers. c. firsthand knowledge. d. cross-functional understanding. e. statistical conclusion validity

1. Round your answer to the nearest cent. Do not enter a $ symbol 38 slots numbered 0, 00, 1, 2, ... , 36. To play the game, a metal ball is spun around the wheel and is allowed to fall into one of the numbered slots. A "street" bet is a bet on three consecutive numbers (e.g. 11, 12, and 13 - if the ball lands on any of these, the player wins). If

Use the accompanying data file to analyze the default probability for automobile loans. Predictor variables for default include loan-to-value ratio (LTV in %), FICO credit score (FICO), and customer age. Click here for the Excel Data File Estimate the appropriate linear probability and logistic regression models and compute their accuracy rates.

A two-way ANOVA is conducted to compare detection accuracy based on target size (small or large) and observer age (old or young). Which of these is a null hypothesis for a main effect of this ANOVA? a. H subscript 0 colon space mu subscript s m a l l end subscript equals mu subscript l a r g e end subscript b. H subscript 1 colon space mu

On lower-level data flow diagrams with multiple processes, there should not be more than nine process symbols. Group of answer choices True False

What is the relationship between responses on the first math survey question (MQ1) with math pretest scores (MATHPRE) and math scores in the middle of the year (MATH2)? Report the results of the predictor variables in the text

According to Bloomberg News, in 2011 the average annual salary for a player in the National Hockey League (NHL) can be described by the numbers $760,000 and $1,800,000. Which one of these numbers is the mean and which is the median? Explain your reasoning. The mean is $760,000 and the median is $1,800,000 since there are a small number of hockey

I am looking how to solve this question. Could you please help give me the info I need? Thanks The time it takes to hand carve a guitar neck is uniformly distributed between 110 and 190 minutes. a. What is the probability that a guitar neck can be carved between 95 and 165 minutes? b. What is the probability that the guitar neck can be carved

In a triad color harmony, a group of three colors distributed evenly around the color wheel are used. Group of answer choices True False

no work is needed Evaluate the line integral below where C : 4x2 + 4y? = 25. (212 + 3y) da + (y' + 5x) dy a) O 4 b) 0 50* c) O 10x d) O 2 e) O 257 f) ONone of these
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Suppose each license plate in a certain state has three digits followed by three letters. The digits 4 and 5 are not used. So, there are 26 letters and 8 digits that are used. Assume that the letters and digits can be repeated. How many license plates can be generated using this format? license plates X G
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16. (5 marks) Let A be a square matrix such that the sum of all the columns of A is equal to the zero column (a zero column is a column where each entry equals 0). Show that A4 - A3 + A2 - A + 2022 1 # 0
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Choose an article from the newspaper, an online source, or a magazine, then identify the descriptive statistics included in the article. Were the statistics appropriately described in the article? Explain. Discuss if the descriptive statistics used in your source supported the arguments made in it. Were the descriptive statistics misleading?

Please Show work, Thank You! The Following data is the sodium content per serving (in Milligrams) of random boxes of cereal 115 87 185 270 153 230 103 215 98 45 230 178 Construct an 90% confidence interval for the population mean of sodium in all cereal, . Round to tenths and put a sentence answer. Give calculator command used. b) give sample mean

B. If different. is there another scheme more suitable in meeting the needs of both parties
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If we took the 500 people attending a school in New York City, divided them by gender, and then took a random sample of the males and a random sampling of the females, the variable on which we would divide the population is called the _____.

Two weighted dice are rolled and the probability distribution table for the possible sums 2, 3, 4... 12 is given below. What is the mean (expected value) of the distribution of sum

Which of the following allows one to examine the relationship between experimentally manipulated variables while controlling another variable that may be correlated with them? Multiple choice question. z test Chi-square ANCOVA t test

if I was doing a t-test, how would i find the test statistic

Many people in the United States and Europe use hair dyes. It is estimated that more than one- third of women over age 18 and about 10 percent of men over age 40 use some type of hair dye. Over 5,000 different chemicals are used in hair dye products. Early hair dye formulations contained chemicals, including aromatic amines, that were found to

Alcohol and oesophageal cancer: Investigators conducted a 1-year cohort study of 5,000 adults who consume high amounts of alcohol (>20 g per day, the equivalent of 2-6 alcoholic drinks per day), and 8,000 adults who consume low amounts of alcohol ( <20 g per day, the equivalent of less than 2 alcoholic drinks per day). Among those with high

Find the absolute maximum value ofg(x)=2x^2+2x+2 over[3,5] .

The time required for an automotive center to finish an oil change service on an automobile approximately follows a normaldistribution, with a mean of 17 minutes and a standard deviation of 2.5 minutes. a) The automotive center guarantees customers that the service will take no longer than 20 minutes. If it does takelonger, the customer will

Suppose a coin is tossed 84 times and lands on heads 48 times. Calculate the test statistic assuming that the coin is fair. Round your answer to two decimal places. Provide your answer below:

Cohort designs are a special case of nonequivalent groups designs that: allow researchers to make noncausal inferences. utilize adjacent groups that share similar environments. have higher compatibility than random designs. select test groups that differ in at least three parameters

A manufacturing company makes two types of water skis, a trick ski and a slalom ski. The relevant manufacturing data are given in the table. Labor-Hours per Ski Maximum Labor-Hours Department Trick Ski Slalom Ski Available per Day Fabricating O 351 Finishing 15 Answer parts (A). (B), and (C) below. (A) If the profit on a trick ski is $50 and the
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A fair die is rolled 3 times, What is the probability of obtaining no 6's?

The probability that a construction generator will operate satisfactorily for 5 yrs is 0.80 and that a welding machine will operate satisfactorily over the same period of time is 0.75. Find the probabilities that in a 5 year period, only the generator will operate satisfactorily.

Sorry for it being so long it is all together. please help data is here \f\f\f\f\f
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Why do you think life expectancy is correlated with GDP

MATH201 - College Mathematics - Quantitative Reasoning Week 5 - What are the chances? Assignment This Assessment is part of the Assignments category, worth 25% of your grade. Deadline Due by the end of Week 5 at 11:59 pm, ET. Completing this Assessment will help you to meet the following: Course Outcome Draw conclusions and make decisions through

The table below summarizes responses from General social Surveys in 1980 and in 2016 to the statement "is much better for everyone involved if the man is the achiever outside the home and the woman takes cat the home and family. " Let 1 denote the population proportion who agreed with this statement in 1980, and let2 denote the population

using an abbreviation that has two different meanings is an example of a lack of

If you wanted to test a hypothesis that a sample of 75 people have a mean similar to a population with a mean of 115 (using a One-Sample T-Test in SPSS), the Test Value would be:

Assume that hybridization experiments are conducted with peas having the property that for offspring, there is a 0.25 probability that a pea has green pods. Assume that the offspring peas are randomly selected in groups of 30. Find the mean and the standard deviation for the numbers of peas with green pods in the groups of 30. The value of the

The records of a computer retail store show that out of the50 customers who purchased a desktop computer last month,39 also purchased a service plan that extends the warranty for an extra year. Out of the25 customers who purchased a notebook computer last month,16 purchased the same service plan. Fill in the blanks of the statement below to make

Which measures of central tendency are not affected by extremely low or extremely high values? O Mode and median O Mean only Mean and mode Geometric mean and mean O Mean and median

Question You are considering testing a new drug that is supposed to facilitate learning in mentally retarded children.Based on preliminary research, you have some idea about the size of the drug's effect.Because of your work schedule you can either do the test with 15 subjects or with 20.You would like to only run 15 subjects, but if running 20

In a standard naval letter, express military time in four digits, from 0100 to 2400. 0001 to 2400. 0001 to 2359. 0000 to 2359

he following table summarizes the test scores of a sample of 28 students: 42 51 60 62 63 64 67 70 71 73 74 75 75 76 80 81 82 82 84 85 86 87 89 90 92 94 95 98 Find Q 1 , Q 2 , and Q 3 Provide your answer below: Q1 = Q2 = Q3 =

Let X1, . .., Xn ~ iid Bern(0) with T = _; Xi, and we wish to estimate o = 0(1 - 0). Find the UMVUE and determine whether it is efficient
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conduct a simple experiment using SPSS. Roll 2 six-sided dice and record the sum of the pair 50 times in an SPSS column https://www.wizards.com/dnd/dice/dice.htm - roll 2d6 here.) Using SPSS, calculate the average and distribution of the data set. Make a histogram from the data Describe the histogram. Does it look like any familiar distributions?

Data were collected from a final sample of 101 parents through an online survey between May and July of 2020. Results indicated that parental mediation strategies did not fully mediate the association between device use and learning. However, enabling parental mediation was positively associated with learning, whereas time on device was negatively

In a study of Lowes shoppers, you have collected sample data of 5 customers about the purchase frequency in a year. The sample showed: 7, 10, 12, 3, 3 What is the sample median and mode? on s es 10 and 4 7 and 3 0 5 and 3 8.5 and 5 10 and 3

The scores earned in a flower-growing competition are represented in the stem-and-leaf plot. 2 0, 1, 3, 5, 7 3 2, 5, 7, 9 4 5 6 5 Key: 217 means 27 What is the appropriate measure of variability for the data shown, and what is its value? O The IQR is the best measure of variability, and it equals 16. O The range is the best measure of variability,

Suppose X is a normal random variable with mean ,u = 4 and standard deviation 0' = 14. Find the probability P(2 S X S 29) to 4 decimal places. To 4 decimal places, P(2 S X g 29) w _ Find (to 2 decimal places) the positive value 2 such that P(|Z I > z) = 0.3, where Z follows the standard normal distribution. To 2 decimal places, 2 m
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I included the following joke in our lecture. What is the point of the joke? Three statisticians are duck hunting. A duck flies by and the first statistician shoots at it, "BAM," and misses by two feet above the duck. The second statistician has time to take a shot at the same duck; he shoots "BAM," and he misses by two feet below the duck. The
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The distribution of scores on a standardized aptitude test is approximatelynormalwith ameanof520 and astandard deviationof105 . What is the minimum score needed to be in the top25 % on this test? Carry your intermediate computations to at least four decimal places, and round your answer to the nearest integer.

Question 17, 2.3.1 HW Score Homework: Midterm Review Part 2 of 4 O Point For the graph, determine the following. a) f ( - 2 ) b) the domain c) any x-values for which f(x) = 4 d) the range a) f( - 2) = 3 b) The domain is (Use a comma to separate answers as needed.)
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Introduction You have been asked to research the association between hypertension and ethnicity. You begin your research with a literature search and find a scientific statement from the American Heart Association: Cardiovascular Health in African Americans. 1) Based on this statement, what can you conclude about hypertension prevalence among
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t helps researchers answer descriptive questions about the relationships between variables and thepredictive relationship between variables over time (Creswell, 2014). what this statement means

A professor speculates that those who take advantage of tutoring services at Lakehead will have higher grades than those who do not. If1is the average grade of students who use tutoring services, and2is the average grade of students who do not, then which hypotheses are used to test the claim? A. H0: 1 = 2, H1: 1 > 2 B. H0: 1 = 2, H1 :1 2 C. H0: 1

This past semester, a professor had a small business calculus section. The students in the class where Alison, Pam, William, neta, and Jim. Suppose the professor randomly selects two people to go to the board to work problems what is the probability that Alison is the first person and William is the second (type an integer or simplified fraction.
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