Mathematics Questions and Answers February 08, 2020

Identify the dependent and independent variables in the following hypothesis. Hypothesis On average, Whites have 8 times the wealth of African Americans.

Please help me get unstuck ASAP Given below is the frequency distribution table of the scores of 40 students in Assessment 1.1 in Math 1 1n. Class Class Class Less than Greater than Relative Cumulative Frequency Cumulative Cumulative Relative Interval Boundaries Mark Frequency Frequency Frequency Frequency 23 - 27 225-27.5 25 5 40 12 5% 125% 28-

You own a high-end salon that is shut down due to the COVID-19 lockdown. You believe salons will reopen in either mid-May, early July or late August. If you reopen in mid-May you anticipate earning an annual profit of $30,000. If you reopen in early July you expect to earn a $5,000 profit and if you cannot reopen until late August you anticipate

An eigenvalue equation commonly encountered has the form d^2/(dx^2 ) (x)= +C(x) where C is a positive constant. (a) Find the general form of the eigenfunction if (x) = A sin (bx) + B cos (bx). (b) Evaluate the constant b in terms of C.

Learning to recognize confounding variables is often one of the things students find most helpful in a Statistics course. Give an example - either something you've read in the news or from your own experience - of a wrong conclusion that was drawn as a result of failing to recognize a confounding variable.

Math 110 Course Resources - Functions Course Packet on the composition of functions Let f(x) = 3x2 - 8x + 4 and g(x) = 2x + 1. Determine the rule for the composite functions fog and g o f. (f o g) ( x) = X (g of ) ( x) = X Submit

Evaluate the integral. x -'dx x -10 a. + C 8 -10 b. 10 + C x -8 c. + C 8 x --10 d. 10 + C X 8 e. + C oo

Calculus Question Plz HELP ASAP Communication x - a 11. Once you know lim f(x) and lim f(x), do you then know the value of f(a)? Explain in detail. x - at 3]

Evaluate the following derivatives. d d (a) (10 points) 29 . 92 + You may use without proof that dq arctan (x)] = arctan (q) dx 1 + 22 d (b) (10 points) evIn(x2+1)+x dx

Consider a log-linear Poisson with three variables A, F, C such as there is a linear homogeneous association model in AF. Show that the degrees of freedom are K(I 1)(J 1)1.

Question 7 4.5 Eliminate the parameter from the parametric equations given below, and convert them into one rectangular equation. F(t) = (x(1), y(t) ) given x (1 ) = -2, y(1) = 41 +5 Select one: Oa. y = 4+7 Ob. y = 4+13 O c. y = 4x2 - 12 O d. y = 4x2 + 13

The cholesterol level of children is normally distributed. 199 If the average cholesterol level is 194 with a standard deviation of15, what percentage of children have a cholesterol level lower than 199? Answers are rounded to the nearest whole percent

A recently released government report suggests that the number of new construction housing starts nationwide is influenced by mortgage rate volatility. A local home builder is interested in creating a model for predicting the number of housing starts within his geographic region using the prevailing mortgage rate as a potential predictor variable.

3. What is an inferential error? Define both Type I and Type II errors. Which error is considered more serious and why?

Question 10 (1 point) What is the slope of the tangent to the curve y= 1+ *" 2x when x = 3? O O 14 2 Question 11 (1 point) For what value(s) of x does /(x) = (x3 -10)' have a horizontal tangent? OX= -4, 4 OX= -4, 0, 4 Ox=0 Ox = 0, 4

0/3.33 Points] DETAILS PREVIOUS ANSWERS SPRECALC7 6.1.031. MY NOTES ASK YOUR TEACHER PRACTICE AN The measure of an angle in standard position is given. Find two positive angles and two negative angles that are coterminal with the given angle. (Enter your answers as a comma separated list.) rad X Need Help? Read It Watch It

What is the domain and range of logarithmic function logaV=t

Please see attached. Thank you. 6. a) Rewrite the equation x? + y? + 6x - 4y - 3 = 0 in standard form. Identify the center and radius. b) Sketch the graph to part (a) on the axes provided on the right

Discuss the assumptions that must be made about the data in order to use the Wilcoxon

For a nested model Ftest of interaction, SSER 1600, SSEc 70, g 2, n A. 65.67 B. 11.67 c. 765 D. 64.05 6. Calculate Test Statistics F.

QUESTION 4 A garage door has two springs, one on each side of the door. A force of 50 pounds is required to stretch each spring 10 feet. How many foot/pounds of work is done by the pair of springs if each spring stretches 7 feet from its natural length when the garage door is open

Calculate the velocity that must be given to a satellite to send it into a circular orbit at a distance of 3.40 103 km above the Earth's surface.

Find the indicated probability. As a prize for winning a contest, the contestant is blindfolded and allowed to draw 3 dollar bills one at a time out of an urn. The urn contains forty $1 bills and ten $100 bills. After each draw, the bill is returned to the urn. What is the probability that none of the $100 bills are selected?

Find the measures of the angles of the triangle whose vertices are A = ( - 1,0), B = (1,1), and C = (1, - 3). E) The measure of AABC is |:|. (Round to the nearest thousandth.)

9,11 with work please 10. 9. 6 ation as an 6 w many It can of the ubic feet defin the spill- juare 2 3 4 5 0 3 he In Exercises 11 and 12, use the 8 rectangles shown to approximate to area of the region below the graph of f(x) = 10 - x over the imm [- 1, 3 ]. 11. 12. axis and TTTTTTTTT -1 2 3 -I

Out of 400 people sampled, 152 received flu vaccinations this year. Based on this, construct a 95% confidence Interval for the true population proportion of people who received flu vaccinations this year. Give your answers as decimals, to three places

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Basic - calculus Integrals involving e^x

Diredions s Loedx fdx

2) Simplify KII and 2 marks a) (m4) x (m6)(m5) b) 23

Homework: Sections 0.1-0.3 Homework Let x} = x2 + 8 and g(x) = 5x. Calculate the following function. 9 gm

CALC_DSCU7 Please provide a different answer than the exists and provide the references. Thank you Q.1. How might Newton's Method be used to find the square roots of numbers that are otherwise hard to find. (eg, "the square root of 2")? Provide examples.

In this 20-point assignment, each histogram is worth one point (a total of 10 points). Each complete, correctly answered question is worth 2 points. Chart 1: Number of prey with a specific trait demonstrated by a number 1-10 (use blue) 2 5 Mark this number of blank rectangles For this number (trait) with the number at left 1 2 2 3 3 4 4 5 5 5 4 8

0 Question 13 B 0/10 pts '0 3 Z 96 6) Details Draw the following graph on the interval 105

Pac-Man can be formed by the intersection of the Unit Circle with the lines y = x (x 2 0) and y = -x (x 2 0). Find SSpac-man x dA. and SSpac-Man y dA

(CO 3) A stock's price fluctuations are approximately normally distributed with a mean of $104.50 and a standard deviation of $23.62. You decide to purchase whenever the price reaches its lowest 15% of values. What is the most you would be willing to pay for the stock?

Solve for the unknown side length. Round your answer to one decimal place. 3.5 sin 580 sin 470

Solve for the unknown side length. Round your answer to one decimal place. sin470

Sales Analysis The total sales S (in thousands) of a video game are given by S(t)=at 2 /t 2 +b, where a= 95, b= 45, and t is the number of months since the release of the game. Find S(10) and S(10). Use these results to estimate the total sales after 11 months. Do NOT compute the total sales after 11 months. approximately video games after 11

Answer it correctly please. I will rate accordingly with multiple votes. Typed answer only and fast answer. Don't stuck. Show all work and explanation for both.

4. Are parallel vectors always opposite or equal vectors? Explain (in words or with pictures)

4. Are parallel vectors always opposite or equal vectors Explain (in words or with pictures).

1 . Find an equation of the line tangent to the graph of f(x)= X4 a)at(1.1); - b)at [-3'31f]; ' c) at [2,%] a) The equation of the tangent line at (1,1) is E. (Type an equation using x and y as the variables.)

The below returns data contains the annual returns for 4 major asset classes, equities (SP500), US treasury bonds, corporate bonds and real estate. Working with this data answer the following question: Assume a 8% inflation level this year. Conditional on this scenario, what asset class has the highest sharpe ratio? Year S&P 500 US T. Bond

Listed below are altitudes (in thousands of feet) and outside air temperatures (inF)recorded during a flight between two cities. Altitude Temperature 1 56 12 37 13 22 24 -6 29 -32 32 -39 34 -54 Estimate the correlation coefficient (or calculate the correlation coefficient exactly by using a calculator or software R=?????????

Find the product of the complex numbers. Leave your answer in polar form. Z1 =5+5i Zz = -5+5i (Simplify your answer. Use integers or fractions for any numbers in the expression

Pick a set of data from (https://www.cdc.gov/DataStatistics/) and make a graphical representation for it, (i.e. a line graph, bar graph, pie chart) Talk about its importance along with discussing methodology and numerical findings in the data.

(CO 3) The monthly utility bills in a city are normally distributed with a mean of $128 and a standard deviation of $23. Find the probability that a randomly selected utility bill is between $110 and $130.

can you please help with this Find the measures of central tendency and measures of variation, as appropriate, for each data column. Separate by columns and compute the mean and standard deviation for each campus. Construct a boxplot for each of the four columns and compare. What are the findings with regards to the summary statistics and the

(Q2) nouns(2 points) Consider process MA(2): X1 = (1 + 0161-1 + 02 61-2. {} is white noise, we have n = 20 observations. Based on the observation, We estimate 0 = 0.1 and 62 = -0.05. Given an estimate of o? . n = 20 observations, the sample variance X is 9. The

QUESTION 2 Find the volume of the solid formed by revolving the region bounded by the graphs of y = x and y = \\ x about the x- axis. Express your answer as a decimal rounded to 1 decimal place

Apply differentiation rules (PRODUCT RULE) to find the equation of the line tangent to the graph of: y=z-(2:c) at 2::

A bag contains 25 balls numbered 1 through 25. Suppose an odd number is considered a 'success'. Two balls are drawn from the bag with replacement. Find the probability of getting two successes exactly one success at least one success no success

Is there a relationship between basketball free throw percentage and the weight and height of the players? what are the main variables, control variables, labels, and value ranges within this relationship?

How do I solve this How many different simple random samples of size 4 can be obtained from a population whose size is 51

1. A game is played with friends. You toss a ve-sided die and if the toss lands on an odd number you get $2. If the die lands on an even number, then you pay $2. a. Create a probability distribution table for the b. Calculate the expected value. Is this a fair game? payout [to be used for expected value) (2 mark) (3 marks] 2. A coin is tossed 5

1. Which Time Series Component shows business variations in the pattern? _________________________ yt Cyclical effect Actual time series Seasonal variation Secular trend Secular trend 1 2 3 4 5 1 2 3 4 5 2 3 4 5 Time (years) Time (years) Time (years)

Chapter 4.1 - 4.2 Homework Score: 14/24 22/24 answered Question 12 According to Masterfoods, the company that manufactures M&M's, 12% of peanut M&M's are brown, 15% are yellow, 12% are red, 23%% are blue, 23%% are orange and 15% are green. (Round all answers to 3 places after th decimal point, if necessary.) (a) Compute the probability that a

2. The assumption that participant number 3 in the study below never developed the event of interest would likely lead to which of the following statistical errors? 2 3 Participants 4 5 6 7 2 3 5 6 7 B Number of Months Until the Event A) Right censoring B) Left censoring C) Noninformative censoring D) Statistical censoring

The following data represent the pH of rain for a random sample of 12 rain dates. A normal probability plot suggests the data could come from a population that is normally distributed. A boxplot indicates there are no outliers. Complete parts a) through d) below. data table 5.30 5.72 4.99 4.80 5.02 4.58 4.74 5.19 5.34 4.76 4.56 5.71 a) Determine a

answer the ff. 21.If we use the standard normal distribution, the probability of obtaining a z-value between 1 and 2 is 0.0228 0.1359 0.3143 0.4772 22.Which of the following measures of central tendency would be appropriate to describe the average pulse rates of group of surgical patients? mode median mean decile 23.The lowest scale of measurement

What is the miss rate if the hit rate is equal to 0.75?

Two towns are 130 miles apart. A tower is located on a bearing of N34E from the western town and on a bearing of N 28W from the eastern town. How far is the tower from the western town?

(CO 3) Fifty-four percent of US teens have heard of a fax machine. You randomly select 12 US teens. Find the probability that the number of these selected teens that have heard of a fax machine is exactly six (first answer listed below). Find the probability that the number is more than 8 (second answer listed below).

6. A 4 km E, B 7 km E 400 N. Determine the resultant vector A B .

Can you give me a simple definition of simultaneous and hierarchical regression analysis strategies?

Find the least squares regression line for the given points. (4! 0)! (2: 1): (2: 1)! (4! 2) Plot the points and sketch the regression line. law

OO Use Green's Theorem to evaluate the line integral. Assume the curve is oriented counterclockwise. VW. (7x+ arctan y ) dy - (9y + In 9x) dx, where C is the boundary of the square with vertices (2, 5), (4, 5), en's (4, 7), and (2, 7). loc ww $ (7x+ arctan y?) dy- (9y? + In 9x) dx = ed he th (Type an exact answer.) e bo ons

QUESTION 3 Use the table below to estimate F (t) dt 4.2 35 4.4 31 4.6 27 4.8 25 21 5.2 17 5.4 13 5.6 5.8 38 24.6 29 25.8 31.2

4. The function g(:::) given in the graph to the right. Let it\") = x/g($)- Compute j'(1)

4. The function g(x) given in the graph to the right. Let j(x) g(x). Compute j(l). 2 1

Find the area bounded by the graphs of the indicated equations over the given interval. ts y = - e ^; y=0; - 1sx52 The area is square units. (Type an integer or decimal rounded to three decimal places as needed.)

A spherical balloon is being inflated. It's radius is increasing at a rate of 0.6 cm/s. Find the rate of increase of the volume when the surface area is equal to 2401: cm2

Calculate definitive integral. Please show all work, and give answer as a fraction in lowest terms.

(x2 2x4 3)dx

Adult male height is normally distributed with a mean of 69.4 inches and a standard deviation of 2.34 inches. What adult male height separates the lower 66%? Round your final answer to one decimal places.

For f(x) = x^2 + x - x-intercept(s) and y- intercept Vertex The value of the maximum or minimum Range Graph the function

This test. - Data Table X File Size (MB) Transfer Time (sec) 32 18.9 51 19.1 31 24.3 77 35.8 22 9.1 21 11.2 31 14.4 48 19.3 37 14.2 22 19.3 39 13.7 99 42.4 87 37.1 62 30.9 96 42.4 58 21.6 85 28.4 96 35.2 24 19.1 98 32.8 Print DoneBefore taking the plunge into videoconferencing, a company ran tests of its current internal computer network. The goal

Apply differentiation rules (CHAIN RULE) to find the derivative of: y = log(4 + COST

Apply differentiation rules (CHAIN RULE) to find the derivative of 108(4 coec)

Question 9 (Revision: Unit 7) 5 marks Consider the function - Gry + 5.r + 2. (a) Show that (1. 3) is a stationary point of f. (b) Classify the stationary point (1. 3)

The Putnam factory has just completed making 22 identical forklifts for 5 companies. Each company will receive at least 2 forklifts. In how many ways can the 22 forklifts be distributed among the 5 companies

In the following examples, indicate whether you would perform a t-test of independent or dependent samples. b. Several states provide reduced fares for public transit to qualifying citizens, while several states have no fare reduction policies in place. The average ridership of public transit was measured. ANSWER CHOICE: A.) Independent samples

Using the F-Distribution Table, find F0.05 , given that numerator degrees of freedom is 8 and denominator degrees of freedom is 16, = 0.05.

(CO 3) The soup produced by a company has a salt level that is normally distributed with a mean of 5.4 grams and a standard deviation of 0.3 grams. The company takes readings of every 10th bar off the production line. The reading points are 5.8, 5.9, 4.9, 6.5, 5.0, 4.9, 6.2, 5.1, 5.7, 6.1. Is the process in control or out of control and why?

Find the indicated z-score shown in the graph to the right Area = 0.0838 Z=? 0 The z-score is (Round to two decimal places as needed.)

"Compare the 9th grade female scores in writing between this year and last year. Using the .05 level of significance and two-tailed table of t values, what would you conclude about the scores?"

[-/3.03 Points] DETAILS SPRECALC7 6.6.019. Solve triangle ABC. (If an answer does not exist, enter DNE. Round your answers to one decimal place. ) a = 52, b = 66, ZA = 590 LB = LC = C= Need Help? Read It Watch It Submit

Evaluate the indefinite integral. evt + 5 Vt dt + C Additional Materials eBook

Evaluate the indefinite integral. dt Additional Materials eBook

(1-2) for05as1 0 otherwise what is the wal of PIX

In a survey, 21 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $32.8 and standard deviation of $10.5. Construct a confidence interval at a 98% confidence level. Express your answer in the format of xx Error. $ $

The count in a bacteria culture was 500 after 10 minutes and 2000 after 40 minutes. Assuming the count grows exponentially, What was the initial size of the culture? :] Find the doubling period. :] Find the population after 105 minutes. :] When will the population reach 13000. Question Help: El Message instructor Submit

Find the positive-valued function y(t) that satisfies dy/dt=ky, y(0) = 10, and y(1) = 50:

dy ky, 10, and y (1) 50

How would I solve this improper integral? 1+ -3 4

Find the equation of the tangent line to the function y ln x 2 when x = 3 .

The parabola has a vertex at (-3,2) and the focus at (-3,-1). Determine the characteristics and write the equation of this parabola. P=_______ Opening Direction:__________ Equation of Directrix:_________ Equation:_______________ The parabola has an equation for its directrix of x=4 and a focus of (6,1). Determine the characteristics and write the

10. What is the slope of the curve y 2x2 4x as it passes through the origin 11. What is the equation of the line tangent to the graph y x2 1 at the point (1 ,2) 12. The distance a body falls is a function of time and is given by x(t) 5t 10t 2. Find its velocity at t 3

APPLICATIONS [Total 11 marks) 17.The line 1?" = (8, 6, 1) + t(2, 2, 1), t E R intersects in xzand yzcoordinates planes at the points A and B, respectively. Determine the length of the line segment AB. [A5]

U5Test.pdf 2 /4 AR Eggbullsgreen . .. MCV400 Name: 3) Given f (x) = *+1 4x2-9 a) Identify any vertical or horizontal asymptotes, and the behaviour around them [4] b) Identify any local extrema (maxima and minima) [4] c) Identify where the function is increasing and decreasing [2] d) Sketch the function on the grid [4]

Solve for x. Round your answer, necessary, to the nearest 0.0001: 8x ( 7/3 ) 10 = 26.4

NOTE: If two single-variable functions f and g have equal derivatives, then they must differ by a constant, i.e., f= g+c for some constant c. Prove or Disprove: If F and G are vector fields in R' with curl F = curl G and div F = div G, then F and G differ by a constant, i.e., F = G + C where C is some constant vector

Given the graph of f(x), sketch an approximate graph of f'(x). 1) A f(x ) Af' ( x) 2) A f(x ) Af' ( x ) 3) A f(x) Af' ( x) 0 202 2 Kuta Software LLC. All rights reserved -- Made with Infinite Calculus. 4) A f(x) Af' ( x )

The differential equation day dx2 2x dy + 2ny = 0 dx is known as Hermite's equation, in which n is a constant. Solve the Hermite's equation for the series solutions

QUESTION 4 6 Estimate with a right hand sum using n3 subintervals. O O O 4.3 7.0 6.4 8.6

Is a normal distribution always necessary? Why or why not?

b. 4x - 4y - sin(x + y) = 0 , (1, It)

b. 4x 4y sin(x y) 0 , (n,n)