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MATH SOLVE
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A university dean is interested in determining the proportion of students who receive some sort of financial aid. Rather than examine the records for all students, the dean randomly selects 200 students and finds that 118 of them are receiving financial aid. Use a 99% confidence interval to estimate the true proportion of students on financial aid. A. 0.59plus or minus0.003 B. 0.59plus or minus0.090 C. 0.59plus or minus0.007 D. 0.59plus or minus0.623
General
4 months ago
Interested in learning more about its fans, the marketing office of the Arena Football League (AFL) conducted a survey at one of its games. The survey had 925 respondents, 700 males and 225 females. Out of the 925 total respondents, 188 stated that they had attended multiple AFL games. Of these 188 fans that had attended multiple games, 167 were male. Using this survey information, answer the following questions.What is the probability that a randomly selected fan has attended multiple games? If required, round your answer to three decimal places.Given that a randomly selected fan has attended multiple games, what is the probability of this person being male? If required, round your answer to three decimal places.What is the probability of a randomly selected fan being male and having attended multiple games? If required, round your answer to three decimal places.Given that a randomly selected fan is male, what is the probability that this person has attended multiple games? If required, round your answer to three decimal places.What is the probability that a randomly selected fan is male or has attended multiple games? If required, round your answer to three decimal places.
General
4 months ago
Abigail, who works for a region's department of health, is looking for evidence that the percentage of adults in the region who are current smokers has decreased from 15.8% in 2015. She gathers a random sample of adults in the region and asks each individual if he or she currently smokes. Abigail found that 40 of the 277 adults who were surveyed are current smokers. What are the null and alternative hypotheses for this hypothesis test?
General
4 months ago
Find the solution of the separable equations a) the general solution: displaystyle dy/dt = t/[y^2] b) the unique solution to: dy/dt = 1/y such that if x = 3 then y = 1.
General
4 months ago
Problem 4-23 (Algorithmic) Suppose that you are given a decision situation with three possible states of nature: S1, S2, and S3. The prior probabilities are P(S1) = 0.20, P(S2) = 0.57, and P(S3) = 0.23. With sample information I, P(I | S1) = 0.12, P(I | S2) = 0.04, and P(I | S3) = 0.20. Compute the revised or posterior probabilities: P(S1 | I), P(S2 | I), and P(S3 | I). If required, round your answers to four decimal places.
General
4 months ago
If a certain coin is flipped, the probability that the coin will land heads up is 1/2. If the coin is flipped 5 times, what is the probability that it will land heads up on the first 3 flips and not on the last 2 flips? A) 3/5 B) 1/2 C) 1/5 D) 1/8 E) 1/32
General
4 months ago
Consider the series ∑n=1[infinity]2nn!nn. Evaluate the the following limit. If it is infinite, type "infinity" or "inf". If it does not exist, type "DNE". limn→[infinity]∣∣∣an+1an∣∣∣=L Answer: L= What can you say about the series using the Ratio Test? Answer "Convergent", "Divergent", or "Inconclusive". Answer: Determine whether the series is absolutely convergent, conditionally convergent, or divergent. Answer "Absolutely Convergent", "Conditionally Convergent", or "Divergent".
General
4 months ago
For the 2015 Intel Science Fair, two brothers in high school recruited 47 of their classmates to take part in a two-stage study. Participants had to read two different passages and then answer questions on them, and each person's score was recorded for each of the two tests. There were no distractions for one of the passages, but participants received text messages while they read the other passage. Participants scored significantly worse when distracted by incoming texts. Participants were also asked if they thought they were good at multitasking (yes or no) but "even students who were confident of their abilities did just as poorly on the test while texting."1(a) How many cases are there?Entry field with correct answer(b) How many variables are mentioned in the description?Entry field with correct answerHow many of these are categorical?Entry field with incorrect answer now contains modified dataHow many are quantitative?Entry field with incorrect answer now contains modified data(c) If we created a dataset of the information with cases as rows and variables as columns, how many rows and how many columns would the dataset have?How many rows?Entry field with incorrect answer now contains modified dataHow many columns?
General
4 months ago
Hugo averages 58 words per minute on a typing test with a standard deviation of 11 words per minute. Suppose Hugo's words per minute on a typing test are normally distributed. Let X= the number of words per minute on a typing test. Then, X∼N(58,11). Suppose Hugo types 74 words per minute in a typing test on Wednesday. The z-score when x=74 is ________. This z-score tells you that x=74 is ________ standard deviations to the ________ (right/left) of the mean, ________.
General
4 months ago
4% of the lightbulbs produced at Shady Stan's lightbulb factory are defective. An inspector visits the factory and randomly grabs 200 lightbulbs. Find the mean and standard deviation.
General
4 months ago
Line A has a slope of -2/3 and passes through (-4,-1). Line B passes through (-4,5) and (-1,3). Are these lines Parallel, perpendicular, or neither?I will mark branliest too!!!
General
4 months ago
Shaun drew ΔLMN, in which m∠LMN = 90°. He then drew ΔPQR, which was a dilation of ΔLMN by a scale factor of 3 from the center of dilation at point M. Which of these can be used to prove ΔLMN ~ ΔPQR by the AA similarity postulate? segment LM = 3segment PQ; this can be confirmed translating point P to point L. segment MN = 3segment QR; this can be confirmed translating point R to point N. m∠P ≅ m∠N; this can be confirmed by translating point P to point N. m∠R ≅ m∠N; this can be confirmed by translating point R to point N.
General
4 months ago
Solve the system of linear equations.3x + y = 9y − 2x = 4A) (1, 6) B) (−1, 6) C) (1, −6) D) (−1, −6)
General
4 months ago
The label on the car's antifreeze container claims to protect the car between −40°C and 140°C. To covert Celsius temperature to Fahrenheit temperature, the formula is C equals five ninths times the quantity F minus thirty two.. Write a compound inequality to determine the Fahrenheit temperature range at which the antifreeze protects the car.
General
4 months ago
Zuleika was solving 2(x - 3) - 9 = 3x - 9. Zuleika's first step resulted in 2(x - 3) = 3xbecause she used the multiplication/addition property of equality. The secondstep resulted in 2x - 16 = 3x because she collected like terms used the distributiveproperly. In the next two steps, Zuleika used the addition/multiplication propertytwice to get -x = 6.She then found the solution, x = -6, by using theaddition/multiplication property of equality.
General
4 months ago
Which equation models the problem below if c represents the number of babies whose eyes are closed? There are 12 babies in a photograph, and 9 of them have their eyes open. How many babies have their eyes closed? 9 – c = 12 12 + c = 9 c – 9 = 12 9 + c = 12
General
4 months ago
coordinate plane with triangles LMN and PQR with L at negative 3 comma 2, M at 1 comma 6, N at 1 comma 2, P at negative 2 comma 3, Q at 0 comma 5, and R at 0 comma 3Which set of transformations would prove ΔLMN ~ ΔPQR?
General
4 months ago
There are about 5.28x108 people in North America. The area of the country is2.47x10²km. If the land were divided equally amongst each person, how much landwould each person receive?
General
4 months ago
Write the first four terms of a sequence given the recursive rule below:f(n) = 2 × f(n − 1) + 3 for all n > 2 and f(1) = 7A) 7, 17, 37, 77B) 7, 9, 11, 13C) 7, 15, 31, 63D)not enough information
General
4 months ago
expand3(x+4)expand and simplify4(x+5)-2(x-3)expand (x+2)(x+7Factorize fully12x-18
General
4 months ago
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