Mathematics Questions and Answers December 03, 2019

In h(x) = sin2 (cost), which of the following is its numerical coefficient in h'(x)? (3 points) 4 one. 0 1 2

Question 2 a. If a = 2i - ] + 3k, b = 31 + 2j +k and c = i + pj + 4k are coplanar, obtain the value of P. [4 marks] 5 55 +3 b. Calculate the volume of the parallelepiped given by the integral | |dydzdx. 00 : 5 [6 marks]

Groot will buy the same number of Pokemon cards every month to add to his collection that Drax gave him. The table shows the number of cards Groot will have at the end of x months. How many Pokemon cards was Groot given, and how many cards will he buy every month?

Show complete solution 3. Find the mass and the center of mass of the lamina that occupies the triangular region D with vertices (0,0), (2,1) and (0,3) and has density function p(x, y) = x + y

6. In a binomial experiment with n=800 and p=0.02, A. Comment on shape of the binomial probability distribution? Discuss how this is related to expected value, variance and z (standardized value) of the sample proportion. ANSWER: B. Find the probability that P > 0.03 ANSWR: C. Find the probability that ?

15 If tan(0) = 8. 0505- then sin(0) equals cos(0) equals csc(0) equals

If tan(0) 15 0 0 , then sin(0) equals cos(0) equals csc(0) equals

Locate all points of discontinuity and discuss the behavior of f at all points.

74. f(x) 1 0 1 x if x if x if x 0

Find the effective rate corresponding to the following nominal rate. 4% compounded semiannually The effective rate is %. (Round to the nearest hundredth as needed.)

This chart summarizes the gender of each student in a class as well as whether they own a dog or cat. If we randomly choose a pet from this group what is the probability that the pet is a cat owned by a boy? Cat Dog Total Girl 5 7 12 Boy 9 5 14 Total 14 12 26 A. 0 B. 14/13 C.19/26 D.9/26

The following helps to estimate experimental error in designed experiments Group of answer choices Randomization Blocking Replication Surface response

5. (10 points) (3) Find the degree-2 interpolating polynomial p($') through the points (0,0), (if/2,1), and (7T,0). (1)) Calculate p(7r/4), an approximation for 8111(1r/4). (c) Give an error bound for the approximation in part (b). ((1) Using a calculator or Matlab, compare the actual error to your error bound

2. Suppose we have a probability density function f(x) defined in [1, 5] as Verify that this is indeed a probability density function

Listen Find the average rate of change of the area of a circle with respect to its radius ras r changes from 3 to 8

What is the best approximation of the standard deviation of the measures -4, -3, 0, 8, ' powered by desmos

a Frequency a. N 7 13 19 25 31 37 data Based on the histogram above, what is the class width (aka the interval width)? b. What is the sample size? W

13. Determine if the point J(0, -4, 7) lies on the plane m1: 7 =[-5, 3, 8] + s[1, 1, -2] + t[-1, 3, -1], s, t & R. [5]

ex yy2 (4b) (4 points) Show that lim does not exist. 12 Y2

Use the graph to write an equation for the function. y = y 6 4 (0, 2) -6 -4 X -12 4 6 -2 4 6

Research Question: Is the average number of people who visit the ER every day decreasing? It is known the average number of people who visit the ER is 125. A sample is collected of 101 hospitals. The average number of people who came to the ERs per day was 120, with a sample standard deviation of 25. Calculate the lower bound for a 95%CI (round to

0. [1.4/4.16 Points] DETAILS PREVIOUS ANSWERS Use the graph of the function f to state the value of each limit, if 21/x - 5 F ( x ) _1/X + 1 (a) lim f(x) X-0 X (b) lim f(x) X - 07 X (c) lim f(x) X -0 DNE

For a standard normal distribution, find P(o.83 k z 0.01)

ba. (8 pts) Use integration by parts to evaluate the indefinite integral. fe sin (10x) dx 6b. (7 pts) Use the result from part (a) to solve the initial-value problem. (For the answer, please solve for y) y'= yesin(10x), y(0) =1

Assume a model with 3 numerical explanatory variables and 1 categorical explanatory variable with 8 category levels. Further assume the model includes the possibility that the relationship between the 1st numerical explanatory variable and the response depends on the levels of the categorical variable (include an interaction between the 1st

If f(2)=-1 and f(4)=3, f could be linear. a) True b) False

Details Find the point in the first quadrant where the line y = 3x intersects a circle of radius 2 centered at the origin. Point

Find the integral S (2 - x) (1 + x) (1 - x)2 dx

Find the integral f (2 x) (1 x) (1 x) dx

If a section of a graph is concave down that means its slope is positive throughout the interval

If a section of a graph is concave down that means its slope is positive throughout the interval. O true O false

Suppose two adjacent endpoints of a rotated square are located at ( - 7, - 6) and (3, - 2) on the coordinate axes. a. What is the length of the side of the square? Preview b. What is the area of the square? Preview

pls help this is rush thanks 25 OF 25 QUESTIONS REMAININ Question 17 1 Point Given cos(0) = 5 13 and the terminal side of 0 lies on the fourth quadrant. What is the value of cos(28)? 119 A 169 10 B 13 64 169 120 D 169

8. 10.66 Points DETAILS BRECMBC9 11.1.030. MY NOTES As a savings plan for college, when their son Bob was born, the Wilburs deposited 10,000 in an account paying 9 compounded annually. How much will the account be worth (in S) when Bob is 18 years old (Use Table 111.) Need 9. 00.66 Points DETAILS PREVIOUS ANSWERS BRECMBC911.1.TB.036. MY NOTES Inez

. Una corporacin fabrica grabadoras portatiles. La cantidad (x) de estas grabadoras demandadas cada semana se relaciona con el precio unitario al mayoreo (p) mediante la ecuacin: p = 40000x 7,5 (a) Cul es la funcin de ingreso total? (b) Determinar la funcin de ingreso marginal. (c) Emplear la funcin de ingreso marginal para calcular el ingreso

Dr. Jones wishes to improve people's memory for names. On average, people can remember the names of 5 people to whom they have recently been introduced. The population standard deviation is 2.5. The shape of the distribution is normal. After a group of 9 people take Dr. Jone's course, they are able to remember on average 7 names of people to whom

With 80% confidence, for sample proportion 0.44 and sample size 29, what is the upper confidence limit with 2 decimal places?

WE IOM SPSS Statistics Syntex Editor File Data Transform Analize Graphs OM SPSS Statistics P How to copy paste SPSS syntax 0 open a new Syntax Editor window, click File > New aste > OK Run

Find the maximum of Q =xy if x+y =42 The maximum value of Q is Q =

Explain what is meant by a proof by mathematical induction.

This concerns knowing how to deal with sine, tangent, dilation and translation. How do I know how to tell the apart to figure what is the correct response. See picture: Which statement best describes the patterns in this image?

Let R be the triangle with vertices (0,0), (-4,2), and (0,6). Find the moment of R with respect to the x-axis and y-axis.

Let f(x) be the function 6x2 - 3x + 9. Then the difference quotient f(5th)-f(5) h can be simplified to ah + b for: a = and b =

representing the equilibrium quantity and market-clearing price. 2. Find the rule of correspondence for a quadratic function that has the same shape as the graph y = -12, and has a vertex at (-1, -4). Write the final answer in the general form y = azz+ br + c. Does this graph have any x-intercepts-why or why not

D Question 3 1 pts Write an equation for the line through the point (1,3) parallel to the line y = 5x + 10. Oy = 2x +5 Oy = 2 Oy = 5x-1 Oy = bat? Oy = 72

Question 5 Given the function f(x) = 7x2 + 1, evaluate and simplify the expressions. Note: Simplify answers as much as possible. Expressions such as 4(x + 2) should be expanded. Also collect like terms, so 3x + x should be written as 4x. f(x + h) - f(2) h f(x th) - f(z) lim h - 0 h Question Help: Video Submit

e Consider maximizing 6 - 12 - 492+ Zay where 2 = 16 . What vaud of y solved this maximization problem ? Now replace the inequality constraint with the new one that U 4 3. What is the value of lagrange multiplier in the case where we assume the constraint holds with strict equality

1. Find the p-values for the following test statistics. Assume two tailed tests A 1.60 B) -1.20 C) 2.57 D) -2.10

a b c or d The partial graph of f(x) = -alog, (x -h), where b > 1, is shown below. To produce the graph of y = f(x), the values of a and h must satisfy Select one: O a. a >0 andh >0 O b. a >0 andh o

1.) Let V Q R3 be the cone with base the disc {(23, y)|352 + y2 g (12} in the as, y-plane and vertex at the point (0, 0, h). Compute the integral 1': /// ygdscdydz. V

Find the margin of error for the given values of c, o, and n. c=0.90, o=3.1, n=81 3 Click the icon to view a table of common critical values. E = D (Round to three decimal places as needed.)

Find the indicated power using De Moivre's Theorem. (Express your fully simplified answer in the form a + bi.) (3\\/3 + 3/)-5

6.42 Suppose that you purchase (ran domly select) 3 TV sets from a produc tion run of 10 TV sets. Of the 10 TV

[AD] A [BC], m(BAN) = m(NAC). m(B) - m(C) = 38 m(DAN) = X = ? B D N A) 140 B) 17" C) 19" D) 22 E) 52"

Compute and interpret the RR of anemia for the SP group vs. the ITNS

Find the average value of u?) = 111:1: on the interval [1,23]. a, = NOW, find 6 such that 111(e) = fg. Report all answers accurate to 5 decimal places

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How to find standardized test statistic if claim is 51% believe mask is effective, a random sample of 2203 with 1150 says it's effective. What is the standardized test statistic

The length of the human index finger is normally distributed with mean 6 cm and standard deviation 0.5 cm. If 9 people are chosen at random, then the probability that the average length of their index fingers is between 5.75 cm and 6.47 cm is . (Round your answer to four decimal places.)

1a) A certain typing agency employs two typists. The average number of errors per article is 3.53.5 when typed by the first typist and 1.81.8 when typed by the second. If your article is equally likely to be typed by either typist, find the probability that it will have no errors. 1b) Flaws in a carpet tend to occur randomly and independently at a

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3. What type of ANOVA was conducted to examine the main effect pre- to post-program on number of days intended to smoke in the next 30 (F(1,449) = 7.98, p = (0.005)? What is the focus of this type of ANOVA?

Sketch a graph of the polar equation. F= 5 + 10 sin(0)

Sketch a graph of the polar equation. r 5 10 sin(9)

Approximate the probability that in 71 tosses of a fair die, at most 13 twos will be obtained. Express the probability as a decimal rounded to the nearest thousandth

the instructor divides students into 3 independent groups based on reported stress levels of kow nedium and high. and are interested in their performance on questions and if their scores differs among the three groups. what analysis nethod is used? paired t test unpaired t test anova multiple linear regression model logistic regression model

It is desired to show that the average hourly wage for carpenters in the state of California is different than $14, the national average the alternate. Alternative hypothesis is not equal to 14, the null hypothesis is

Construct the augmented matrix that corresponds to the following system of equations. 3(z - 8) - 8x+ y = z -4(6x - y) + 6 = 4z 5x 4 - (y - 82) = x

Points: 4 Suppose f(x) = x - sin (x) + 9 Prove that there is a Saddle Point at x = 0 . Use an interval chart as part of your solution

please don't handwriting solutions plz . Suppose a continuous random variable X have pdf f, where . f ( x ) = Sc(1 - x2 ), -1

A data entry clerk misses a row when entering information. This mistake creates a compatibility issue between the transactional software and analytical software. What would mitigate this issue in the future so that a clean data set can be analyzed?

Consider the velocity vector field (x,y,z) = (3x^2 -3y^2)i + (-6xy)j. Determine whether or not this flow is derivable from a stream function w(x, y,z). If so, calculate this stream function. If not, briefly explain why not

Question

For each of the following questions , provide: i) the statistical test you used to address the study hypothesis and a description of why you chose the test (for example, one sample vs. two samples, parametric vs. nonparametric, paired vs. unpaired, one-tailed vs. two tailed), ii) your null and alternative hypotheses, iii) significance level and

Find the horizontal and vertical asymptotes then graph the rational function. _ s \"ax5 E) If There is a horizontal asymptote, what is it? Select the correct choice below and ll in any answer boxes within your choice. D A. The horizontal asymptote is D. ['I'ype an equation.) 0 3_ There is no horizontal asymptote

Explain in detail step by step analysis. Part 3 Univariate Analysis of Variance Between-Subjects Factors Tests of Between-Subjects Effects Dependent Variable: RESPONDENTS INCOME Source Type Ill Sum of Squares Df Mean Square F Sig. Partial Eta Squared Corrected 251.810a 2 125.905 17.176 .000 105 Model Intercept 8121.510 1 8121.510 1107.941 .000

. Question 7 Sketch the line corresponding to the equation y = 2 - -4 -3 -2 1 4 -2 -3 -4 Clear All Draw:0 Question 8 v For each soatterplot, choose the most appropriate statement. {3' There is a strong positive linear correlation {3' There is a strong nonlinear correlation {3' There is a strong negative linear correlation {3' There is a weak or no

QUESTION 9 Gopal's house was completely destroyed due to the devastating earth-quake on 12 Baishakh 2072 B.S. An organization distributed the canvas for making the tent. He made an equilateral triangular tent by using the canvas including the floor for the temporary shelter. The edge of the triangular face was 12 ft. each and length of the tent

Question 7 (10 points) Determine if the following improper integral is convergent or divergent. If it converges you do not have to find the exact value. Show all your work. cooltex dx

In a survey of 3472 adults, 1416 say they have started paying bills online in the last year. Construct a 99% confidence interval for the population proportion. Interpret the results. A 99% condence interval for the population proportion is 0:\":D . (Round to three decimal places as needed.)

The test statistic of z = 2.37 is obtained when testing the claim that p > 0.8. a. Identify the hypothesis test as being two-tailed, left-tailed, or right-tailed. b. Find the Pvalue. c. Using a significance level of or = 0.05, should we reject H0 or should we fail to reject H0? Click here to View [:ge 1 of the standard normal distribution table.

Let X1, ..., Xn be a random sample from the PDF fo(z) x0+1, x>1, for a fixed value of 0 > 0. Find the density of the sample minimum Y = X(1), and note that it is has same form as fo(.) but with a different value of 0

grew aleoyl was Emirates National Schools Unit 2: Continuity Summative 1 Name Date ID 7) [DOK 4]The number grade 8 students who arrived at ENS School for Boys on a Monday morning between 7:30 AM and 7:40 AM is modelled by the function A(r)=109'2" where A(t] is the number of grade 8 students who have arrived and I is the number of minutes since

HW 104 Answer all questions show all work. Given the equation:3x2 - 30x - 3xy + 4y2 - 10y = 0 1.) If x =2, find the corresponding y value. 2.) If y = 9, find the corresponding x value. 3.) If x = 13 find the corresponding y value Given the equation:v (x - 6)2 + (y -1)2 + (x -6)2 + (y -7)2 = 10 4.) If x = 10 find the corresponding y value 5.) If y

(1 point) A random sample of 61 measurements was selected from a population with 0' = 4.59. The sample mean was 29.9. Calculate a 97.28% confidence interval for u. ( , )

a. compute t=b. percentage variance and magnitude size=c. confidence interval ( report both low and high interval)d. apa summary report= The following data are from an independent-measures experiment comparing two treatment conditions: Treatment 1 Treatment 2 6 19 13 9 DO 18 4 10 13 12 4 14 11 19 1 1 Data are as follows: two-tailed test at the .05

b. Repeat the test using the critical value approach. What is the rejection rule for this hypothesis test? Round the critical values to 2 decimal places. Reject Ho if F - Select your answer - - Select your answer What is your co equal to less than or equal to - Select your ar less than not equal to greater than greater than or equal toWhat is your

C. EXPLAIN Demonstrate your understanding of the Sum and Difference Formulas by giving two examples and explaining your solution. Example #1 Example #2 Prove the given using trigonometric identities. Given: cot 6 csc 9 sin 9 = cot 6

X and Y are independent, each U(0,1). Define W = min(X, Y) and V = max(X, Y) as the smaller and larger of these variables. Find the densities of V, W; are they independent? Show that E(VW) = 1/4.

1. A student claims that he can correctly identify whether a person is a business major or an agriculture major by the way the person dresses. Suppose in_2_1_ctp_al_ity_tl_1_a_t if someone is a business major, he can correctly identify that person as a business major 87% of the time. When a person is an agriculture major, the student will

Please do it correctly and please don't just post someone else ans from anywhere. Please please I'll appreciate

Mean = 54.53 Std. Dev. = 7.039 5.0- N = 15 4.0- 3.0- Frequency 2.0- 1.0- 0.0 35 40 45 50 55 60 65 Enrollmen_Age

help i don't understand [5 marks] Question 2 Prove that there exists no rational number whose square is 2. [6 marks]

Blaine drives for Uber. On any given day Blaine averages $150 in earnings with a standard deviation of $36. After 49 days, what is the probability that Blaine earns between $7,000 and $8,100? Note: Round to the nearest thousandth if necessary.

Suppose that X ~ N( 4, 16) and T = exp(X). Find P( T > 43) give answers correct to 2 decimal places).

I have two questions which I am unsure how to answer. "The rule of thumb for SDs tells us that the area under the normal curve between -z=-2 and z=2 is about 95%. Using this approximation, what is the total area under the normal curve to the left of z=2?" a)90% b)92.5% c)95% d)97.5% "Suppose a collection of heights has an average value of 65

The lifetime of a particular brand of AA batteries follows a normal distribution. The mean lifetime of particular brand of AA batteries is 1000 hours, with a standard deviation of 100 hours. What percentage of batteries last more than 1200 hours? Select one: a.2.5% b.5% c.16% d.32%

A video camera is focused on a rocket on a launching pad 2 miles from the camera. The angle of elevation from the ground to the rocket after seconds is . 120 a. Write a function expressing the altitude () in miles, of the rocket above the ground after seconds. Ignore the curvature of the Earth. b. Graph () on the interval (0,60) c. Evaluate and

Let X and Y be two normal random variables with respective mean of X an Y , respective variance of 2 X an 2 Y respectively, and covariance of XY . Set Z = aX bY + c with a, b and c being constants. Compute: (a) E[Z], E[Z|X], E[Z|Y], E[Z|X, Y] (b) V[Z], V[Z|X], V[Z|Y], V[Z|X, Y] (c) E[E[Z|X]], E[E[Z|Y]], E[E[Z|X, Y]] (d) V[E[Z|X]], V[E[Z|Y]],

13.4 points Q In multiple regression, rather than using R2 as a measure of model "fit,\" we use Rzadj. The formula for Rzadj is: (17R2)(N71) R2 :17 Nip adj The term p is the number of coefcients estimated in the model. So if, for example, we are using two predictors, p will be equal to 3, as we also have to account for the intercept. For a model

Bookmarks Window Help psu.instructure.com C Start Page 17 Start Page D Question 8 1.5 pts The table below shows the wind chill temperature, T, in degrees Fahrenheit when the ambient temperature is 20F, as a function of the wind speed in miles per hour (mph). Calculate the average rate of change in the wind chill temperature (in degrees F per mph)

HW Score: 67.26%. 13.45 Question 10, 7.2.33-T of 20 points (3} Points: 0 of 1 Assume the random variable X is normally distributed, with mean p: 51 and standard deviation cr =8. Find the 131h percentile. The 13th percentile is . (Round to two decimal places as needed.)

What is the median time between calls to the hotline, m

Find a 95% confidence interval for the mean score of placement test. A sample of 50 such test had a mean of 72 and a standard deviation of 14 points

Describe ethics procedures. Was informed consent obtained?: https://sci-hubtw.hkvisa.net/10.1016/j.pmrj.2018.09.030