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Mathematics Questions and Answers April 09, 2021

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1. During the fall semester the students enrolled in COMM172 received the following grades on their fourth quiz: Student Score Student Score Aiden 82.5% Jocelyn 17.5% Alaina 37.5% Julia 35% Ava 77.5% Liam 95% Caden 72.5% Noah 85% Declan 50% Olivia 90% Emerson 65% Quinn 60% Emma 87.5% Sophia 100% Isabella 75% Theodore 30% Jackson 100% Weston 67.5%

Use Tornados data and find two months (month X and month Y ) for which we have the SECOND strongest NEGATIVE correlation . Create the chart where x -axis and y -axis represent the tornadoes for month X and month Y . (Choose the months in chronological order X comes before Y ) Properly label the chart and be sure that you have the fitted line as

3.19 Suppose a die is rolled. Consider the following events: A = 2,4 or 6 is rolled B = 1, 2 or 5 is rolled C = 3 or 5 is rolled (a) Are A and B are mutually exclusive? Why? (b) Are A and C are mutually exclusive? Why? (c) Find P(A|B) (d) Find P(B or C'). (e) Are A and B independent? Why? (f) Are B and 0 independent? Why
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LESSON 2.1 Practice B For use with the lesson "Use Properties of Exponents" Evaluate the expression. Tell which properties of exponents you used. 1. 25 . 23 2. (-7)2(-7) 3. 4-6.4-1 4. (5-2)2 5. 6. 8-4 82 7. 8. -3 Write the answer in scientific notation. 9. (6.1 X 105)(2.2 X 106) 10. (2.6 X 10 7)(1.3 X 102) 11. (3.4 X 10-1)(3.1 X 10-2) 12. (5.8 X
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SHOULD DO WORK LIKE THIS 1203-903 + 4a- 3 It is in standard (1203 - 90) (40- 3) Form already 1203 = 1:12 2:40 B.4 Bla a 40:142 2 0 1hoo terms 3:13 ( ) aroun Bar (40-3) 11(40-3) second 2 terms factor ear match so we set of ( Knots Correct Done\f\fM - m" tam- 2
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Use the computer output to estimate the intercept0 and the slope1. The regression equation isY=802-3.88X . Predictor Coef SE Coef. T P Constant 801.518. 87.12 9.20 0.000 X -3.878 1.271 -3.05 0.006 Intercept0: Slope1:

Solve using augmented matrix methods. -12x1 + 3x2 = 3 16x1 - 4x2= -4

A particular traffic light at the outskirts of a town is red for 30 seconds, green for 25 seconds and yellow for 5 seconds every minute. The probability that the traffic light will NOT be green when a motorist first sees it is:

You take a class with a teacher who has 3 kinds of sweaters: fancy sweaters, ugly sweaters, and beige sweaters. Your teacher is very frugal, though, and he doesn't have money for very many fancy sweaters, and so never wears a fancy sweater two days in a row. The day after he wears a fancy sweater, he is just as likely to wear an ugly or beige

A taxi cab drives 2.0 km [W], then 3.0 km [N], then 4.0 km [W], and finally 5.0 km [N]. The entire trip takes 0.30 h. What is the taxi's average velocity? T a) 33 km/h [53 N of W] b) 47 km/h [53 W of N] c) 10 km/h [53 N of W] d) 33 km/h [53 W of N] e) 47 km/h [53 N of W]

Demand Charge: first 50 kw = $6.54/kW more than 50 kw = $5.91/kW Energy Charge: first 250 kwh = $0.1055/kWh next 750 kwh = $0.0954/kWh next 2,000 kwh = $0.0644/kWh next 2,000 kwh = $0.0578/kWh next 5,000 kwh = $0.0488/kWh more than 10,000 kwh = $0.0455/kWh Fuel Adjustment = $0.0170/kWh Kilgan's Grocery used 1,000 kilowatt hours of electricity last

Total plasma volume is important in determining the required plasma component in blood replacement therapy for a person undergoing surgery. Plasma volume is influenced by the overall health and physical activity of an individual. Suppose that a random sample of48male firefighters are tested and that they have a plasma volume sample mean of x =

Given the two surfaces, 175z = 12xy and 49x 2 +y 2 = 1225. Discuss the Frenet-Serret equation of the derivative vectors at the point P and show that they lie in the same plane. Provide a sketch to illustrate your explanation.

PARAPHRASE The strongest correlation is indicated by a correlation coefficient of 1. The closer the absolute value of the Pearson correlation coefficient to 1, the stronger the correlation is

Find the relative extrema. if any. of the function: f=+w C) There is no critical paint {3- {I1}, -1, } is a. saddle point [j] {I}, -1, D) it: a rel. min {:1 Nene of these
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Thanks so much! Use the following results from a test for marijuana use, which is provided by a certain drug testing company. Among 147 subjects with positive test results, there are 25 false positive results; among 160 negative results, there are 3 false negative results. If one of the test subjects is randomly selected, nd the probability that
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Suppose C is the curve r(t) = < cost , sint > , for 0 < t < and F(x,y) = < -5x 2 - 5y 2 , 3y/x > is a vector field. Evaluate the vector line integral c F dr and enter your answer below.

What are the differences between one-tailed and two-tailed tests? When you conduct a test of statistical significance, whether it is from a correlation, an ANOVA, a regression or some other kind of test, you are given a p-value somewhere in the output. If you test statistic is symmetrically distributed, you can select one of three alternative
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hey i need help with this please disregard the exam template my teacher just didnt remove them it is in fact a homework assignmnet . DETAILS MY NOTES ASK YOURTEACHER In a random sample of 160 married British couples, the difference between the husband's and wife's ages had a mean of 2.25 years and a standard deviation of 4.8 years. The
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1. A new drug for pain relief is being tested within a given palliative care population. The new drug is being compared to an already approved pain relief drug that is commonly used in providing palliative care to patients who experience chronic severe pain. Assume the patients are asked to rate the pain on a scale from 1 to 10, and the data

Problem 6 The power of this test against the alternative hypothesis that the chance the die lands with two spots showing is 1?.42%, the chance the die lands with five spots showing is 15.91% and the chances the die lands with one, three, four, or six spots showing each equal 1f6, is (09)
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This is a probability and random variable question. Please help. \f
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Find the final monthly payment required to pay off a loan with $2200 remaining principal and a 12% annual interest rate. A. $2,212 00 B. $2,178.00 C. $2,222.00 D. $2,200:00
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5. Consider the bilinear form f : R2 R2 R such that f ( ( x 1 x 2 ) , ( y 1 y 2 ) ) = x 1 y 1 x 2 y 2 +2x 1 y 2 +2x 2 y 1 . Consider the basis B for R 2 , where B = { [ 1 0 ] , [ 2 1 ] }. (a) Find the standard matrix [f] for f. (b) Find the B-matrix [f] B for f. (c) Write down the change of basis matrix. (d) Verify that [f] and [f] B are congruent
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Determine whether the given pair of graphs G and H are isomorphic. Show all your work including invariants and adjacenty matrices. If isomorphic, determine the functional mapping between corresponding vertices. V2 U3 V V5 UA Us H G
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Submit Question . Question 3 0/1 pt 9 2 - 98 @ Details Xenical is used to treat obesity in people with risk factors such as diabetes, high blood pressure, and high cholesterol or triglycerides. Xenical works in the intestines, where it blocks some of the fat a person eats from being absorbed. A standard prescription of Xenical is given in
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Hi, can someone help me with these questions? Results for this submission Entered Answer Preview Result 0 0 correct 0.205 0.205 correct 0.65 0.65 correct 0.65 0.65 incorrect At least one of the answers above is NOT correct. (1 point) Suppose that the random variable X is uniformly distributed between the values 6 and 26. Compute the following
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Question 1 1 pts G Given: LG=21; FW bisects ZGFI Prove: AGFH - AIFH Statements Reasons 1. LG.ZI; FH bisects ZGFI 1, 2. LGFH . LIFH 2. Def. of 3. 3. Reflexive Prop. 4. What is the reason for step 1? Given O SSS O Prove O Definition of BisectorQuestion 2 1 pts Given ZGull; FM/ bisects ZGFI Prove: AGFH - AIFH Statements 1. 2Goal: FH bisects CGFI 1 2.
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If an archer shoots an arrow straight upward with an initial velocity of 192 ft/sec from a height of 7 ft, then its height above the ground in feet at time t in seconds is given by the function h(t)=16t2+192t+7. a. What is the maximum height reached by the arrow? b. How long does it take for the arrow to reach the ground?

Please help solve Application (9 marks) 1. Solve algebraically over the interval OSXS2. a) 2cosx + 0.9 = 0 (round to 2 decimal places) (2) b) 2csex - V3 = 0 (find exact solutions) (3) MHF4U 133 marks c) tan x - Stanx - 6 = 0 (round to 2 decimal places) (4)
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A production line produces 600 parts per hour with an average of 5 defective parts an hour .If you test every parts that comes off the line in 15 minutes,what is the probability if finding no defective parts ?

\fSuppose R is the solid bounded by the plane z = 5x, the surface z = x2, and the planes y = 0 and y = 3. Write an iterated integral in the form below to find the volume of the solid R. (If (z, y, 2 ) av - LS. Jazdy due R with limits of integration A = B = C = D = E = F =Evaluate the triple integral x dV where E is the solid bounded by the
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An object travels along the x- axis using the model L(t) = 6Sin(3t) where' t' is in seconds and 'L' is the location on the x-axis. What is the x-coordinate of the particle after 7.5 seconds?

In the year1998, a survey was undertaken to find the salary of employees working in software companies. In a sample of400employees,35% of them received a salary of$4000per month. A similar survey was conducted three years later and showed that25% of employees received$4000per monthin a sample of50 employees. Construct a98% confidence interval for

11.3.31 Q9 One hundred college seniors attending a career fair at a university were categorized according to gender and according to primary career motivation. The table below shows the results. If one of these students is to be selected atrandom, find the probability that the student selected is male, given that their primary motivation is money.

Help to solve the statistical analysis Section 1&2 with matlab (provide code) or excel & provide the solution guideline for the following. Please highlight the answers or the following as well. \f\f\f\f\f
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Thequality-control manager at a compact fluorescent light bulb(CFL) factory needs to determine whether the mean life of a large shipment of CFLs is equal to 7,467 hours. The population standard deviation is 840hours. A random sample of 49 light bulbs indicates a sample mean life of 7,287 hours. a. At the 0.05 level ofsignificance, is there

M.M., a 76-year-old retired schoolteacher, underwent open reduction and internal fixation (ORIF) for a fracture of his right femur. His preoperative control prothrombin time (PT/INR) was 11 sec/1.0 and his aPTT was 35 seconds. He has been on bed rest for the first 2 days postoperatively. At 0600, his vital signs were 132/84, 80 with regular

Wesley has some $5-coins and $10-coins. The number of $10-coins is 5 less than twice of $5-coins. The total value of the coins is $200. Find the number of $5-coins that Wesley has.

A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 2 points with 99% confidence assuming s = 15.9 based on earlier studies? Suppose the doctor would be content with 95% confidence. How does the decrease in confidence affect the sample size
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Let the random variable X have a continuous uniform distribution with a minimum value of 110 and a maximum value of 160. \f
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Show that the following vectors span a line. Find the equations of the line by using each of the vectors as direction vectors, and assuming that the line passes through the origin. <1,2,2>, , <3,6,6>.

Given the statement: "If a number is odd, then its square is odd.", find the: Inverse Negation

Let Z be a standard normal random variable, i.e. = 0 and 2 = 1. Show the following facts: a) P{Z > x} = P{Z < x} b) P{|Z| > x} = 2P{Z > x} c) P{|Z| < x} = 2P{Z < x} 1

1. Question 1 10/10 A place kicker in pro football has a 77% probability of making a field goal over 40 yards, and each attempted field goal is independent. If the kicker made his first two but missed his third attempt and is now trying for his fourth field goal of the game to win in overtime, what is the probability that his team will win the
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1. Find the domain and codomain of the transformation T defined by the formula. XI XI X2 X2 X - X3 X3 2. Let "T" be a transformation defined by the formula T(x1, X2) = (X2, -X1, X1 + 5X2,X1 - X2) a. Find the standard matrix for the linear transformation. b. Find TA(x), where x = (-3,4)
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2. Present and explain a problem that can be approached using a time series regression, another one using crosssectional regression, and another using panel data
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Direction: Answer the following problem below. Make sure to show the complete solution and answer. SHOW THE COMPLETE SOLUTIONS AND ANSWERS! 1) Refer to the graph of f(x). y = f ( x) A - 4 - 3 -2 -1 3 4 X -2 Solve f(x) = 7 for x. X = XRefer to the graph of 900. Solve g(x) = 0 for x. (Enter your answers as a comma-separated Fist.) 1 Refer to the
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4. (20 points) Suppose that {A; | i e I) is an indexed family of sets and B is a set. Prove that (niel A;) x B = Qjel (A; * B)
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Q 1 probability A college hockey team has 13 players; 7 are seniors, 4 are juniors, and 2 are sophomores. Two players are randomly selected to serve as captains for the next game. What is the probability that both players selected are seniors? The probability is (Round to four decimal places as needed.)
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Q9. Evaluate the following definite and indefinite integrals. (a f sin 2x dac (b) S av2x + 1 dx (c) ST/2 cost x sin x da (4+4+4=12 marks)
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Help Desk (Raw Data, Software Required): There are four student employees at the Computer Help Desk. The supervisor wants to determine if there is a difference in the mean number of clients served per hour between the four employees. The data for the number of clients served from a random selection of hours is depicted below. The supervisor claims
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Solve each equation. Remember to check for extrancous solutions 8 5 22) + 2 + 5m m 2 4- 5m m 18 C) (2) D) S A) B 2, NIW w
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(1 point) Solve the following differential equation by finding an appropriate integrating factor edx + (4x y - 2y)dy = 0. = constant
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The following table provides a probability distribution for the random variable y . y f ( y ) 2 .20 4 .20 6 .30 8 .30 b. Compute Var(y) (to 2 decimals). Var(y)

Valencia Products make automobile radar detectors and assembles two models: LaserStop and SpeedBuster. Both models use the same electronic components. For the next month, the supply of these is limited to 5 comma 000 of component A and 4 comma 500 of component B. The number of each component required for each product, the profit per unit, and the

2. Find the sum-of-products expansions of the Boolean function F(x, y, z) that equals 1 if and only if a) x = 0. b) xy = 0. c ) xty = 0. d) xyz = 0.2. Consider the four two-bit integers (00)2, (01)2, (10)2, (11)2, or 0, 1, 2, 3. Your job is to construct a circuit using AND, OR and NOT gates that takes two two-bit integers, (1X0)2 and (y1yo)2 and
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(essere) talmente nervoso che mentre Luigi ................................... (mangiare), io non ......... .......................... (dire) nemmeno una parola. 5. Dopo le vacanze in Sicilia ................................... (noi, tornare) a Milano a lavorare. .............. ..................... (noi, essere) cos tristi che

Using at-distribution table or software or acalculator, report thet-statistic which is multiplied by the standard error to form the margin of error for the following cases. a. 90 90% confidence interval for a mean with 9 9 observations. b. 90 90% confidence interval for a mean with 19 19 observations. c. 99 99% confidence interval for a mean with

A) determine whether it's a one-to-one. B) if the function is one-to-one, find a formula for the inverse #54) f(x)=(x+5)^3

The records of a computer retail store show that out of the50 customers who purchased a desktop computer last month, all but14 also purchased a service plan that extends the warranty for an extra year. Out of the100 customers who purchased a notebook computer last month, all but16 purchased the same service plan. Fill in the blanks of the

The British passenger liner, the Titanic, sank in 1912 after colliding with an iceberg. The collision with the iceberg resulted in the loss of most of its passengers and crew. A random sample of 30 passengers and crew members of the Titanic was taken. The following is a report of the ages of these passengers/crew members. (Note: this is real data

In a study of the relation between the expanding budget of advertisement on a specific product (X) in thousands of pounds and the quantity sold (Y), in tons, of a product. A sample of the advertising budget and the quantity sold in eight successive months is drawn from one of the companies which are dealing in such a product and the following

Roadway workers must be in the clear for a least_____seconds when using Train Approach Warning (TAW). 10; None of these answers are correct; 15; or 8

Jeremy rides his bike at a rate of 15 miles per hour.Below is a table that represents the number of hours and miles Kevin rides.Assume both bikers ride at a constant rate.Which biker rides at a greater speed? \f
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A groomer cares for dogs and cats, and can groom no more than 20 dogs in a day. The inequality y 14 3(x 2) can be used to represent the number of cats, x, and the number of dogs, y. Graph the inequality

In a1996 article in the Journal of Statistics Education (vol. 4, no. 2), entitled "A Critical Appraisal of 98.6", Allen Shoemaker describes a study that was reported in the Journal of the American Medical Association (JAMA). * It is generally accepted that the mean body temperature of an adult human is 98.6 F. In his article, Shoemaker uses the
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Logs can be thought of as having a base and an input value. For example, in the expression: f(8) = log2 (8) Math output error , the base is 2, and the input value is 8. In the function f (ac ) = log (@ ) the base is 3, and the input value is x. Consider examples like f(x)=log(x-2)Math output error or f(x)=log(x+3)Math output error What are the
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Which of the following quadrants is least desirable for a new technology to be classified in initially? (i.e. there is the most remaining work to get to creative destruction) Group of answer choices Quadrant 1 Quadrant 4 Quadrant 3 Quadrant 2

1. You wish to estimate the mean cholesterol levels of patients two days after they had a heart attack. To estimate the mean, you collect data from 28 heart patients. Justify for full credit. (a) Which of the followings is the sample? (i) Mean cholesterol levels of 28 patients recovering from a heart attack suffered two days ago (ii) Cholesterol

How would you do b and c? I have already done a and I know they are right. a) For the following data, which of the two possible lines of best fit: jil =12.52x, or i=2 =121.5x, is better, according to the Principle of Least Squares. State why. (Show your working fully in the table). b) For the better t line above, plot the residual value against
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8) For the function f(x)=x"+ 2x 23x" 24x +136 . use secant slopes to verify that a local maximum or minimum occurs at the point where x = 3. State whether it 1s a maximum or a minimum that occurs at this point. (4 5 marks)
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Let X be a random variable with the following probability distribution: \f
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Please help with the following questions. Thank you in advance!! PART 1 Lesson 8.1: Systems of Linear Equations and Graphs Workbook BA Lesson 8.1: Graphing Systems of Linear Equations Explore Your Understanding Assignment 1. Consider the linear system of equations y = =x -1 and 2x - 3y + 1 =0 . 1 a. Graph the system of equations. 1 b. What is the
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Suppose that the function g is defined as follows. -1 if - 1.5
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1 U I . The total cost (30:) in OMR, associated with the production of x units of an item is given by C(x) = 0.005:3 0.023.:2 + 30:: + 5000 Find the marginal cost when 3 units are produced, where the marginal cost is the instantaneous rate of change of total cost at any level of output. Determine the absolute extrema for the following function and
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////////// G tte 2 Google Search * 4 Af Exam Papers Goos x DctaMath * E cac Google Docs * | G average rate of change * | G atx of chong: Google * | + Back. M minutes remaining Anika | larode Question 15 - 5 Points Dec 08, 8:56:56 PM ? Consider the differential equation dy -, with initial value y (0) = 1. Using Euler's Method with step size Ax - ,
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The data shown below represent the repair cost for a low-impact collision in a simple random sample of mini- and micro-vehicles. Complete parts (a) through (d) below. $3148 $1010 $743 $663 $773 $1758 $3345 $2065 $2686 $1385 Click here to view the table of critical t-values Click here to view page 1 of the standard normal distribution table. Click
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uick-change aircraft can be easily transformed from carrying one type of cargo to another. True / False

Determine whether the graph of the function f(x)equalsx is symmetric about the y-axis or the origin. Indicate whether the function is even, odd, or neither

Pryme Tyme Soda Werks would like to dominate the college energy drink market.They've taken their leading energy drink, Shoker, and added a proprietary blend of nootropic supplements (i.e., vitamins and minerals that are supposed to increase cognitive processing, such as choline and gingko biloba).Their big marketing angle is that Roket Phule not

(1) solve each system of equations 10 02) Solve each system of equations x + 2y 4 (3) Determine if the system is consistent, independent, dependent on inconsistent 2x - 5y=6 4x + 10y Q4) Write the following system as an augmented matrix. 3x - 4y + 4z =7 x- y - 2z=2 2x - 3y + 62 =5 Q5) Solve each system of equations 2x + 3y =6 Q6) A restaurant
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Question 29 (1 point) In May, a retailer recorded credit sales of $14,000. Assuming the sales tax rate is 8 percent, the entry to record the sales in the sales journal would include: a debit to Accounts Receivable of $15,120. a debit to Sales Tax Payable of $1,120. a credit to Accounts Receivable of $15, 120. a credit to Sales of $15,120
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Hi Using the accompanying drawing, find my BAD if mzABC = 60'. A MA All Pen B a) 30' b) 90 c) 60 d) 120' e) 45 f) None of the above
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height of adult women have a mean of 63.6 in and a standard deviation of 2.5 in. What does Chebyshev's Theorem say about the percentage of women with height between 58.6 and 68.6 in?

The four attributes that determine the preciseness of a scale of measurement are ______. Question 5 options: rating, ranking, ratio, equal intervals true zero, identity, order, equal intervals sequencing, rating, true zero, identity equal intervals, categories, ranking, uniqueness

Awater hose isused to fill a tankfor feeding horses. The water hose if capable of filling an empty tank in 8 hours. There is a drain valve on this tank which is capable of draining off all of the water in a full tank in 30 hours. Suppose that the drain valveis left open and you beginfilling an empty tank. How many hourswillit take to fill the tank

What is the difference between a bar scale and representative fraction? A. A bar scale is a graphic symbol and a representative fraction is numeric B. If a map is reduced in size, the representative fraction will remain accurate, but the bar scale will not C. A representative fraction can be converted to a bar scale, but a bar scale cannot be

The _ _ _ _ _ , _ _ _ _ _ _ an d _ _ _ _ _ _ are equal or approximately equal an dlocated at the center of the normal distribution

I need help with the study questions in the image I provided. I'm not really sure how to solve these. I'd appreciate step-by-step explanations. Thank you! Also, my instructor does not allow us to use a computer programs just printed t tables or z tables to manually use. \f
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Eight defective computers were shipped to a store in a shipment of 60 computers.What is the probability that the first three sold are not defective?

Dwight keeps only red and blue pens in each of the 3 draws in his desk. Each draw contains exactly 8 pens in total. There are 4 blue pens in the top draw, 3 blue pens in the middle draw and 7 blue pens in the bottom draw. Dwight is lazy and anytime he needs to get a pen, 67% of the time he chooses the top draw, 19% of the time he chooses the

REQUIREMENT Select any TWO companies listed in the industrial products and services sector of the Main Market of Bursa Malaysia and access the annual report for the year ended 2023. Analyse the investing activities of the selected companies. The assignment should highlight the following aspects: 1. Introduction of the companies. 2. Explanation of
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Determine an equation for the average cost per hour of a plumber's service, if they charge a fixed fee of $100 and then an hourly fee of $25 per hour, if t represents the number of hours and A(t) represents the average cost per hour over time. O a. A(t) = 25 + 100t t O b. A (t) = 100 + 25t O c. A(t) = (t - 25)(t - 100) O d. A(t) = 100 + 25t O e.

Consider the following hypothesis test. H 0 : = 20 H a : 20 The population standard deviation is9. Use= 0.05. How large a sample should be taken if the researcher is willing to accept a 0.05 probability of making a type II error when the actual population mean is24? (Round your answer up to the nearest integer.)

Having wrapped up your work on the smaller projects, you are finally able to turn your attention to the project you are most excited about: research! Being one of Casey's projects, the files needed are password protected. Once again, you review the hint that Casey has left as a reminder of the password. Find an exact solution for In(6) + In (69:2
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1 18 of 21 (9 The five-number summary for the ages of 150 respondents to a survey on cell phone use is shown below Min Q1 Med Q3 Max 22 25 32 43 224 Are there any outliers in these data? Explain. What might your next steps in the analysis be? Are there any outliers in these data? Explain The upper outlier limit is The lower outlier limit is The
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You have the following function 9(3) = 4m3 + 6w 5. What is this function's derivative? Complete all response fields. If you think a term should not appear enter a "0" (without the quotation marks) into the response field
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Algebra II Exam Review Ch1 Find the distance in the xy-plane between the two points. Round an approximate result to the nearest hundredth. 1) (4, 5) and (14, 29) 2) (5, 7) and (15, 31) Find the midpoint of the line segment joining the two points. 3) (-2, -3) and (4, -8) 4) (2, -6) and (-4, 0) Find the standard equation of the circle that satisfies

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