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Mathematics Questions and Answers April 09, 2021

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Consider the hyperbola having the equation short dash 4 x squared plus 9 y squared plus 8 x plus 36 y minus 4 equals 0. Complete the square, then use the result to find the center, vertices, foci, equations of the asymptotes, and the eccentricity of the hyperbola. a.) Center: left parenthesis 1 comma space short dash 2 right parenthesis Vertices:

Suppose we are interested in bidding on a piece of land and we know one other bidder is interested. The seller announced that the highest bid in excess of $15,000will be accepted. Assume that the competitor's bid x is a random variable that is uniformly distributed between $15,000and $20,000. you know someone who is willing to pay you $21,000for

or a data set of chest sizes(distance around chest ininches) and weights(pounds) of five anesthetized bears that weremeasured, the linear correlation coefficient is r=0.422. Use the table available below to find the critical values of r. Based on a comparison of the linear correlation coefficient r and the criticalvalues, what do you conclude

Which factors must be considered when determining the conclusions of research findings? Group of answer choices Complexity of variables, controlling variables, and availability Controlling variables, complexity of variables, and confounds Confounds, complexity of variables, and availability Availability, complexity of variables, and probabilities

An epidemiologist is studying incidence rates of a new virus to determine whether the rate is increasing over time. The current incidence rate is believed to be ????0 = 0.03. A screening program takes a random sample each week with ???? = 75. a. What are the center line and control limits for the ???? chart? b. What is the exact probability of a

3. [-/3.57 Points] DETAILS LARMPMT1 11.3.010. 0/1 Submissions Used Sketch a net of each regular pyramid. Then use the net to find the surface area of the pyramid. (a) 20 mm 10 Mm mm 2 ( b ) 9 in. 7% in. 5.2 in! in 2
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1. Assume that in an apple orchard the heights of the trees are normally distributed with a mean of 14 feet and a standard deviation of 3 feet.Show all work for the following problems. (a) What is the probability that a randomly selected tree is at least 7 feet tall? (b) What is the probability that a randomly selected tree is between 14 and 16

The unemployment rate was 5.8% ( Bureau of Labor Statistics , April 3, 2003). Suppose that 100 employable people were selected randomly during April of 2003. What is the expected number of people who were unemployed (to 1 decimal)? 2.What are the variance and standard deviation of the number of people who were unemployed (to 2 decimals)? 3 .What

After observing statistically significant ANOVA results, Bonferroni-corrected inferences to determine which groups differ from each other require the following steps (select all that apply) : Select one or more: a.Use the mean square error from the ANOVAwhen calculating the standard error to be used in the pairwise two-sample t-tests b.Compute the

hey i need help with stats A medication is advertised to have weight gain as a side effect. Weight changes for 11 subjects taking this medication are given. (a) Find the value of the mean weight change and the value of the median weight change for the eleven subjects. (Round your answer to the nearest tenth.) Mean weight change is Median weight
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Please solve this question with detailed steps and good handwriting! thanks! 4.4 Suppose we have a vector 1 which has a multivariate normal distribution, 1 \" Nola: E} Let y = a'z for some k x 1 vector 11, and let x = B: for some p x 1: matrix B. Using (Al?) and (A18) in Appendix AIL show that the conditional distribution of ylx is normal and that
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m) While preparing Bryan for the ending of the counselling process you want to encourage Bryan to... i. Reflect on what has changed as well as what has not changed for him ii. Feelmore empowered and prepared for the end of the counselling process iii. Consider how he can maintain his progress outside of the counselling relationship iv. Understand
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Find the regressionequation, letting the first variable be the predictor(x) variable. Using the listedactress/actor ages in variousyears, find the best predicted age of the Best Actor winner given that the age of the Best Actress winner that year is 30 30 years. Is the result within 5 years of the actual Best Actorwinner, whose age was 49 49

a. One week Carlos bought 3 bags of Tabitha Tidbits and 4 bags of Figaro Flakes for $43. The next week he bought 3 bags of Tabitha Tidbits and 6 bags of Figaro Flakes for $54. Based on this information, figure out the price of one bag of each type of cat food
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please help (: Problem 1 A container holds 100 L of salt water with a concentration of 0.5 kg/L. Starting at time t = 0 minutes, salt water with a concentration of 3 kg/L is added to the container at a rate of 5 L/min. (a) How much salt (in kg) is in the container at t = 0? (b) Starting at t = 0 minutes, salt water is drained from the container at
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Two measures, x and y, were taken on 20 subjects. Two regressions were performed and resulted in the following residual plots. Regression 1 - 9 - -553.919 + 2.93759x and re = 0,93. (4 points) 100 80 60 40 Residuals 20 200 220 240 260 280 300 320 340 B60 380 400 -20 -40 -60 80 Regression 2 - log(v) = 1.321 12 + 0.003827x and r= = 0,98 Regression 1
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how would I solve this thank you Question 2 1 pts In parallelogram ABCD below, if BC= 29, CE = 4, and CD= 14, find the area of the parallelogram. (Diagram is not to scale) m
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Describe the different tests a researcher can perform with a combination of categorical and interval variables. What factors might influence test selection?

Which of the following regions of the radius help form the wrist joint? View Available Hint(s)for Part C Neck Head Radial tuberosity Styloid process

Please be specific and answer all parts of the FRQ! Thank you so much! A graphing calculator may NOT be used for the following problem. Consider the differential equation = = x(y - 1). a) On the axes provided, sketch a slope field for the given differential equation at the 8 given points. 2 b) Lety = f(x) be the particular solution to the given
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Please check my work and use my formulas given 8. what is the value of X ? 45-45-90 Long bs 45 hyp = leg . v2 X = 6 VZ - x hyp 9. what is the value of X? 30- 60-90 20 short Long long leg = short leg. V3 Eg X 1X = 2053 130 10. Find the length of the missing sipE, Provide an answer accurate the nearest tenth, AZ+ B 2 = C 2 112 + B 2 = 432 43 yd hip
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13 X is a normally distributed random variable with a mean of 4 0 . Find the standard deviation of the distribution if 59 1096 of the data lies to the right of 3 20 . ( Note : the diagram is not necessarily to scale . Ans: 3514 The average age of vehicles registered in the United States is 96 months Assume the population is normally distributed
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People were polled on how many books they read the previous year. Initial survey results indicate that s = 17.9 books. Complete parts (a) through (d) below. 5 Click the icon to view a partial table of critical values. (a) How many subjects are needed to estimate the mean number of books read the previous year within six books with 95% condence?
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Let C=f(q)=250+0.1q give the cost in dollars to manufacture q kg of a chemical. a) Which of the following statement(s) correctly explain the meaning of f1(C) ? Check all that apply. A. The number of kgs. of the chemical that can be manufactured with C dollars. B. The cost of manufacturing C kgs. the chemical. C. The number of kgs. of the chemical

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