Mathematics Questions and Answers April 04, 2020

PLease help me to solve and graph it. Thank you. For the following exercises, use technology (CAS or calculator) to sketch the parametric equations. 6. [ x = 12 + t, y = 12 - 1

d. 4. Let y be a function whose derivative is defined by a = = - cos cos (x) . Find a. + cos (x) b. + sin (x) C. & + cos (x) d. &-cos(x) 5

22. We want to test the following hypothesis: H0: = 3000, H1: < 3000. Based on a sample size n = 245, from a population with a standard deviation, , of 625. We use the following decision rule: Reject H0 if X-bar < 2930, otherwise do not reject H0. What is the power of the test if in fact m is 2960? 0,401 0,774 0,226 0,105 0,842 0,599

B. Refer to Figure 9.2 on p. 184. Does this figure correspond to a directional or nondirectional hypothesis? Why? Directional. The rejection null is on one end. This is a one-tail test

Homework 1 0c: 6.1 / Administer Due date 12/3/21 11:59 PM PDF w/o expl 16. CalC6a44s 10 pts possible Find the area of the shaded region in 1. area = 6 P O 2. area = 8 0 3. area = 3 0 4. area = 12 5. area = 4 bounded by the graph of f(x) = 612, the tangent line at P(2, f(2)), and the x-axis

Exercise ().3.15. Prove that 5n is divisible by 6 for all n N.

Jopan mendapat kesulitan ketika ia mengerjakan suatu deret aritmetika. Dia telah mencoba melakukan beberapa cara untuk mempercepat pekerjaan nya untuk menentukan suku ke-n dari deret tersebut. Deret bilangan nya adalah 4, 9, 14, 19, ... Note: a = suku pertama b = beda (jarak suku pertama ke suku kedua) U n = a + ( (n-1) b) Mis: Suku ke 20 = 99

thank you.

Find the most general antiderivative.

Estimate the take-home income for each job offer and record it in a Job Summary Table. Based on this information, which job should you take? Why

Question 19 Calculate the mean for the discrete probability distribution shown here. X 2 6 10 15 P(x) 0.2 0.3 0.3 0.2 O 8.25 O 0.25 O 1.54 O 8.20

Question 6 (Multiple Choice Worth 10 points) (04.06 MC) Find lim sin 2 2 O Nonexistent

The following data represents the weekly sales revenue {$000) of a sample of cafes. 33.2 13.0 16.8 5.1 14.8 18.1 14.1 20.0 8.1 13.7 19.6 13.2 30.6 6.0 18.9 23.7 5.4 12.5 32.8 30.0 19.8 10.0 11.1 12.5 22.6 12.5 11.7 21.0 14.9 24.3 11.6 9.2 a} Using (5, 10] as your first class, summarize this data by creating a table including the following:

Suppose the average price of gasoline for a city in the United States follows a continuous uniform distribution with a lower bound of $3.20 per gallon and an upper bound of $3.80 per gallon. What is the probability a randomly chosen gas station charges less than $3.70 per gallon? Group of answer choices 0.6667 0.1667 0.3333 0.8333

A passenger metal detector at Chicago's Midway Airport gives an alarm 0.5 time a minute. (a) Find the median waiting time un next alarm. (b) Find the first quartile of waiting time before the next alarm. (c) Find the 30th percentile waiting rune until the next alarm. Show all calculations clearly

Suppose the average price of gasoline for a city in the United States follows a continuous uniform distribution with a lower bound of $3.20 per gallon and an upper bound of $3.80 per gallon. What is the probability a randomly chosen gas station charges less than $3.70 per gallon? Group of answer choices 0.6667 0.1667 0.3333 0.8333

Previous Problem Problem List Next Problem (1 point) An implicit equation for the plane passing through the points (-1, -4, 0), (-4, -6, 2), and (-5, -6,0) is

Estimate the take-home income for each job offer and record it in a Job Summary Table. Based on this information, which job should you take? Why

Exercise ().3.15. Prove that 5n is divisible by 6 for all n N.

Histogram of mtcarsSmpg 12 10 Frequency 6 I | | | | 1 3 15 20 25 30 35 mtcars$mpg In which interval does the median fall? [find the frequency, then find out where the middle number is. then count on the histogram]

Consider the two sample t-test with equal variances and the paired t-test. These tests are equivalent to which experimental designs. State the designs and draw detailed comparison between them.

The distrubution of means based on a sample size of 20, pulled from a population distrubution with a mean of 100 and a standard deviation of 15, would have a standard error of__. a. 1.33 b. 0.75 c. 3.35 d. 5.33

Previous Problem Problem List Next Problem (1 point) An implicit equation for the plane passing through the points (-1, -4, 0), (-4, -6, 2), and (-5, -6,0) is

questions asked may differ. 1. Suppose that uj and uz are orthogonal unit vectors with a and b nonzero scalars. If v = au, + buz, find V . U2. 2. Find two integer values of c such that (c2, -7, c + 3) is

Suppose the average price of gasoline for a city in the United States follows a continuous uniform distribution with a lower bound of $3.20 per gallon and an upper bound of $3.80 per gallon. What is the probability a randomly chosen gas station charges less than $3.70 per gallon? Group of answer choices 0.6667 0.1667 0.3333 0.8333

Question

8. (7 marks) Suppose that the tangent line to the graph of f(:L') = newt) at :r: = 1 is equal to the tangent line to the graph of g($) = 4 sin(1 85:) at x = 0. What is the value of the positive constant 5, and what is the equation of the tangent line

Question Determine the interval of convergence for the series below, given that the ratio test result is p -. en n=0 Write your answer in interval notation. Provide your answer below: Interval of convergence

Question

How would you graph this limit? Consider the following um ( a) Describe the type of indetern 0

Solve for angles 1,2 and the side length x. (Note that "7" and "14" represent the lengths of the sides they are closest to and "78" is the degree measure of the angle) 14 -X ( Round to the Nearest youth of A degree If Necessary X = Round to Nearest tenth

Name the following compound Select one mxylene oxylene pxylene xylenes

questions asked may differ. 1. Suppose that uj and uz are orthogonal unit vectors with a and b nonzero scalars. If v = au, + buz, find V . U2. 2. Find two integer values of c such that (c2, -7, c + 3) is

Listen An experiment consists of tossing two, 12-sided dice (the numbers 1-12 are printed on the sides of each die). Let Event A = both dice show an even number. Let Event B = both dice show a number more than eight. Find P (A B). O A) 16/144 O B) 4/16 O C) 2/144 O D) 24 Previous Page Next Page Page 6 of 10

Plz answer ASAP Question 12 (1 point) Listen Choose the most correct statement regarding asymptotes of the function: f (ac) = 2202 x2-1 the function will only have vertical asymptotes the function will have vertical and horizontal asymptotes the function will only have a horizontal asymptote the function has no asymptotes

(1 point) Consider the function f(x) = x - 3 In(x), 35x15. The absolute maximum value is and this occurs at x equals The absolute minimum value is and this occurs at x equals

The following data represents the weekly sales revenue {$000) of a sample of cafes. 33.2 13.0 16.8 5.1 14.8 18.1 14.1 20.0 8.1 13.7 19.6 13.2 30.6 6.0 18.9 23.7 5.4 12.5 32.8 30.0 19.8 10.0 11.1 12.5 22.6 12.5 11.7 21.0 14.9 24.3 11.6 9.2 a} Using (5, 10] as your first class, summarize this data by creating a table including the following:

The following data represents the weekly sales revenue {$000) of a sample of cafes. 33.2 13.0 16.8 5.1 14.8 18.1 14.1 20.0 8.1 13.7 19.6 13.2 30.6 6.0 18.9 23.7 5.4 12.5 32.8 30.0 19.8 10.0 11.1 12.5 22.6 12.5 11.7 21.0 14.9 24.3 11.6 9.2 a} Using (5, 10] as your first class, summarize this data by creating a table including the following:

4.) Find the probability of getting the following 5-card poker hands. (a) A royal flush (A, K, Q, J, 10 of a single suit.) (b) A straight (5 cards in a row, not all of the same suit, with ace either high or low) (c) Three of a kind (exactly 3 cards of the same kind) (d) Exactly 2 different suits

### Splitting data into training and test set from sklearn . model_selection import train_test_split X_train , X_test , train_labels test labels = train_test_split (X_scaled , y, test_size

8. (7 marks) Suppose that the tangent line to the graph of f(:L') = newt) at :r: = 1 is equal to the tangent line to the graph of g($) = 4 sin(1 85:) at x = 0. What is the value of the positive constant 5, and what is the equation of the tangent line

questions asked may differ. 1. Suppose that uj and uz are orthogonal unit vectors with a and b nonzero scalars. If v = au, + buz, find V . U2. 2. Find two integer values of c such that (c2, -7, c + 3) is

Question Determine the interval of convergence for the series below, given that the ratio test result is p -. en n=0 Write your answer in interval notation. Provide your answer below: Interval of convergence

4.) Find the probability of getting the following 5-card poker hands. (a) A royal flush (A, K, Q, J, 10 of a single suit.) (b) A straight (5 cards in a row, not all of the same suit, with ace either high or low) (c) Three of a kind (exactly 3 cards of the same kind) (d) Exactly 2 different suits

Name the following compound Select one mxylene oxylene pxylene xylenes

A data set consists of 300 observations that range between 147 and 241. What class intervals would you suggest?

Solve for angles 1,2 and the side length x. (Note that "7" and "14" represent the lengths of the sides they are closest to and "78" is the degree measure of the angle) 14 -X ( Round to the Nearest youth of A degree If Necessary X = Round to Nearest tenth

(1 point) Consider the function f(x) = x - 3 In(x), 35x15. The absolute maximum value is and this occurs at x equals The absolute minimum value is and this occurs at x equals

Find the derivative of f(x) where

In(c)

QUESTION 4 0.5 points Save Answer Let X and Y be jointly continuous random variables with joint probability density given by f(x,y) = [x(y+x) for 0

How do I solve this with the dataset, Theoph in RStudio to figure out ka and co The rate of change of the amount in the stomach is given by the following model: dy1/dt = -kay1 where ka is a rate parameter in hr^-1, and the initial amount of theophylline is given by y1(0) = co in mg. In other words, co is the amount of theophylline that the person

QUESTION 5 0.5 points Save Answer Let X and Y be continuous random variables with joint probability density f(x, y) = (xty) for 0 S x 5 2,0 S y S 2 otherwise Find my = E(Y)

A weightlifter holds a1,700N barbell 1 meter above the ground. One end of a 2-meter-long chain hangs from the center of the barbell. The chain has a total weight of700N.How much work (in J) is required to lift the barbell to a height of2 m? J What is the average force (average with respect to height of the barbell from the ground) exerted by the

Plz answer ASAP Question 13 (1 point) Listen Which statement is correct regarding points of inflection? f (a ) = 2x2 x2-1 O there are no points of inflection O there are many points of inflection there is only one point of inflection O there are exactly two points of inflection

Plz answer ASAP Question 13 (1 point) Listen Which statement is correct regarding points of inflection? f (a ) = 2x2 x2-1 O there are no points of inflection O there are many points of inflection there is only one point of inflection O there are exactly two points of inflection

14) Compute the quartiles Q, and Q3 and the percentile Poo for the distribution of the number of automobiles per family. Number of automobiles |0 1 2 3 4 5 6 Number of families 8 20 11 5 2 3 1 a) 0 01 = 2, 03 = 1, P90 = 4 b) 0 21 = 1, 23 = 4, P90 = 2 c) 0 2, = 4, 03 = 2, P90 = 1 d) 0 21 = 1, 23 = 2, P90 = 4

[5pt] Question 3. Let X be a continuous random variable with the following prob function: -a +1 if 0 > 2

B3 (16 points) Suppose that g: R - R is a differentiable function, such that g(1) = 3, and -2 1, then -2a + 5

(15 points) Let /| be the line parametrizationd let /2 be the line parametrizat (a) (10 points) Show that 61 and /2 do not intersect. (b) (5 points) Find an equation of the plane that contains: . 61 and . the point on 62 closest to /1

(15 points) Let /| be the line parametrizationd let /2 be the line parametrizat (a) (10 points) Show that 61 and /2 do not intersect. (b) (5 points) Find an equation of the plane that contains: . 61 and . the point on 62 closest to /1

A rccd.instructure.com An Immersed Hour of Resident Evil 4 VR - YouTube Quiz: Quiz 8 r work! Question 1 Use either the root or ratio test to see if the series converge diverge. OO n k2 en 4k n=1 Upload 3 15 6 8 E R Y U O D G H K V B N M

My hypothesis for the study was that teaching young people about sex education should relate to them being less likely to make mistakes that result in unintended pregnancies in population expansion. 1. Identify variables 2. What parts of this or what can I do to make it qualitative and quantitative. 3. Suggestions to perform mathematical analysis

67/9 C 24/6 C 24/9 5 points QUESTION 7 1. A couple plans to have three children. Find the probability that the couple has a) no boys b) at least one girl, c) either

Plz answer ASAP Question 13 (1 point) Listen Which statement is correct regarding points of inflection? f (a ) = 2x2 x2-1 O there are no points of inflection O there are many points of inflection there is only one point of inflection O there are exactly two points of inflection

B3 (16 points) Suppose that g: R - R is a differentiable function, such that g(1) = 3, and -2 1, then -2a + 5

My hypothesis for the study was that teaching young people about sex education should relate to them being less likely to make mistakes that result in unintended pregnancies in population expansion. 1. Identify variables 2. What parts of this or what can I do to make it qualitative and quantitative. 3. Suggestions to perform mathematical analysis

My hypothesis for the study was that teaching young people about sex education should relate to them being less likely to make mistakes that result in unintended pregnancies in population expansion. 1. Identify variables 2. What parts of this or what can I do to make it qualitative and quantitative. 3. Suggestions to perform mathematical analysis

Let u 4 1 and v 6 7 2 . Compute and compare u v, 2 u v and u v 2. Do not use the Pythagorean Theorem. (Simplify your answer.)

14) Compute the quartiles Q, and Q3 and the percentile Poo for the distribution of the number of automobiles per family. Number of automobiles |0 1 2 3 4 5 6 Number of families 8 20 11 5 2 3 1 a) 0 01 = 2, 03 = 1, P90 = 4 b) 0 21 = 1, 23 = 4, P90 = 2 c) 0 2, = 4, 03 = 2, P90 = 1 d) 0 21 = 1, 23 = 2, P90 = 4

ASTORY OF UNITS Lesson 9 Problem Set 2. Mrs. Lang told her class that the class's not hamster is 1 ft in length. How long is the hamster in in

6. Compute the determinant, and use Gauss-Jordan elimination to find the inverse of the fol- lowing matrix (if it exists). 218 0 0 M = 0 218 2 0 1 [10]

A rccd.instructure.com An Immersed Hour of Resident Evil 4 VR - YouTube Quiz: Quiz 8 r work! Question 1 Use either the root or ratio test to see if the series converge diverge. OO n k2 en 4k n=1 Upload 3 15 6 8 E R Y U O D G H K V B N M

1 Scenario A. A researcher is interested in understanding how a company's work from home policy will influence worker productivity, so she compares two companies. Company 1, Vance Refrigeration, allows employees to work from home only 3 days per week. Company 2, Dunder Mifflin Paper Company, has a policy in which employees can choose to work

1. Two-Way Classification With a statistical justification how would you model the following data Ratio of leaf area to dry weight Shamouti Marsh Orange Grapefruit Clementine Sun Half Shade Shade

Find sin 2x, cos 2x, and tan 2x from the given information. sin x= - 3/4, x is in Quadrant 3.

Determine the location and order of the zeros for: 9. f(z) = cosh4 z.

Determine the location and order of the zeros for: 9. f(z) = cosh4 z.

The vertices of the base of an isosceles triangle are (-1, -2) and (1, 4). If the third vertex lies on the line 4x + 3y = 12, find the area of the triangle

ueen Charlotte's Hospital gives a random sample of 50 patients a new treatment for an illness. 60% of these are cured. Find the 95% confidence interval for the proportion of all patients who will be cured by the treatment

Question 14 O Mark th A researcher has a table of data with 5 column variables and 5 row variables. The value for the degrees of freedom in order to calculate the x statistic is 0 4 O 24 O 25 O 16

ASTORY OF UNITS Lesson 9 Problem Set 2. Mrs. Lang told her class that the class's not hamster is 1 ft in length. How long is the hamster in in

A weightlifter holds a1,700N barbell 1 meter above the ground. One end of a 2-meter-long chain hangs from the center of the barbell. The chain has a total weight of700N.How much work (in J) is required to lift the barbell to a height of2 m? J What is the average force (average with respect to height of the barbell from the ground) exerted by the

3/50 answered Question 4 V Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the height of a man with a z-score of 1.3 (to 2 decimal places) Check

We are interested in examining scores on tests of academic achievement for a group of third graders at a nearby school in social studies. The hope is we can take a sample of these students' scores and generalize them to third graders in the entire state. What sample size might be better and why- 3 or 300? For the above problem, if the overall

Suppose you have obtained from SPSS the correlation matrix. According to the information in this matrix, which two variables exhibit the strongest linear relationship? X1 X2 X3 X1 Pearson Correlation 1 .303** .183* Sig. (2-tailed) .000 .000 N 500 500 500 X2 Pearson Correlation .303** 1 -.441** Sig. (2-tailed) .000 .032 N 500 500 500 X3 Pearson

13) Brawndo Inc determines that to have a weekly sales of x units of its Brawndo the Thirst Mutilator sports drink the price per unit is as p = 4000-0.01x Brawndo Inc also determines that the total weekly cost to produce x units of its Brawndo the Thirst Mutilator is C(x) =10000 +.1x How many cans of Brawndo the Thirst Mutilator must be sold to

(2. Let Y : 171(2) with Y N N(,u,cr). Suppose the distribution of a predictor of a new value of Y follows a normal distribution , i.e. F0 ~ N(_u, 1.23 where a is a vector of constants and 2: is the variance covariance matrix of Y. (We assume that Y0 : AIY, a linear combination of Y : (Y1,Y2,...,Yn)r.) In addition suppose Y0 = 1511(20). Find the

4. Given the system of the equations da dt = 2 - ab - a2, db at =1 - ab, where a(t) and b(t) are the amount of substances A and B, resp. in a chemical compound. We only need to consider non-negative a(t) and b(t). (a) (3 ponts) find equilibrium points; (b) (7 points) sketch the nullclines and the vector field along the nullclines; (c) (5 points)

ou are given the following hypotheses: 0 =0.35 H0p=0.35 0.65 HAp0.65 We know the sample size is 90. For what sample proportion would the p-value be equal to 0.05? Assume that all conditions necessary for inference are satisfied.

Fall 2018 Math 227 Course Outcomes by Sex yo Ethnicity Successful Unsuccessful Total in American Indian 3 10 Asian 314 123 437 Black 228 253 481 Filipino 120 71 191 Hispanic 1903 2053 3956 Multiethnic 61 52 113 Pacific Islander 6 6 12 White 363 199 562 Unknown 137 106 243 Total 3135 2870 6005 If you select a student at random, what's the

The following data represent the monthly phone use, in minutes, of a customer enrolled in a fraud prevention program for the past 20 months. The phone 530 496 331 467 0 company decides to use the upper fence as the cutoff point for the number of minutes at which the customer should be contacted. What is the cutoff point? 548 346 511 377 411 360

Please help!! could you use R Studio to work on this question? thank you

2. Dataset tourism contains quarterly visitor nights (in thousands) from 1998 to 2017 for 76 regions of Australia. (12 marks) (a) Extract data from the Gold Comst region using filter() and ag gregate total overnight trips (sum over Purpose) using summarise (). Call this new dataset gctourism. (3 marks) (b) Using slice() or filter(), create three

WITH COMPLETE SOLUTION According to the U.S. Bureau of Labor Statistics, the average weekly earnings of a production worker in 1997 were $424.20. Suppose a labor researcher wants to test to determine whether this figure is still accurate today. The researcher randomly selects 54 production workers from across the United States and obtains a

12 red 0 . 7059 17 total of A 8 & Vamaledong To1 gnit ello 3. Joe Star is a prized baseball free agent. Joe's agent states that there is a 28% chance that his client will sign with the Yankees, but there is only a 36% chance that he will sign with the Dodgers. a. Find the probability that Joe Star will sign with the Yankees or the Dodgers. b. Find

Un test di affidabilita su 33 componenti elettrici ha dato i seguenti risultati: 6 5 A 3 3 1 2 3 4 5 6 7 Calcolare f(t) eh(t) nell'intervallo [5, 6]

If the decision in a hypothesis test said to reject Ho, then we can always make a conclusion that the sample data supports the claim. Group of answer choices True False

i would like this question solved correctly. Question 8 Suppose the derivative of a function f (x) isf'(x) = (x - 2)(x + 6). Not yet answered (a) On which open interval is f(x) decreasing? Use interval notation, for example, oo(a,b) is the same as a

Page 1 > of 2 - ZOOM + Press Esc to exit full screen Price ($) Promotional Exp ($K) Location Store Size (Sq.Ft) Sales($K) 949 5 1 5,500 168 941 3.5 1 5,200 150 934 4.8 1 5,400 168 921 3.6 1 4,750 14 915 4.3 1 5,250 152 909 4.7 1 5,000 162 904 4.5 1 6,000 160 1014 2 0 2,350 123 1006 2.9 0 3,000 130 990 1.2 0 2,400 116 978 3 1 5,200 142 962 3.2 1

A group of researchers carried out a study on narcissism (self-love), comparing people who scored high versus low on a narcissism questionnaire. (An example item was, "If I ruled the world it would be a better place.") They also had other questionaires, including one that had an item about how many times the participant looked in the mirror on a

Please show all work 2. (4 points) The mayor of a community in Massachusetts has expressed opposition to having marijuana retail stores in the city. The public may or may not feel differently, and a local polling agency wants to find out. Surveying 580 residents, 310 are in support of allowing a marijuana retail outlet within the city, and 270 are

2. Let f(x) = x1/3(x + 8), f'(x) _ 4(2+2) 3x2/3 , and f"(x) - 4(I - 4) 975/3 (a) Determine the domain and range of the function. (b) Determine the y- intercepts (c) Determine the critical points. d) Determine the intervals on which the function is increasing or decreasing. Determine where all extreme values occur. (e) Determine the intervals on