Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN: 9781133382119

Author: Swokowski

Publisher: Cengage

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We wish to demonstrate that the average time to graduate from college is affected by the students having taken AP calculus in high school. Specifically we wish to demonstrate that students who have taken AP calculus in high school gradate an average of at most 0.25 years sooner than students who have not taken AP calculus in high school. If we let μ1 demote the average time to graduate for students who have not taken AP calculus and μ2 denote the average time to graduate for students who have taken AP calculus, then select the appropriate alternative hypothesis:
a. μ1-μ2 = 0
b. μ1-μ2-0.25 < 0
c. μ1-μ2-0.25>0
Please explain

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We wish to demonstrate that the average time to graduate from Tulane is affected by the students having taken AP calculus in high school. Specially, we wish to demonstrate that students who have taken AP calculus in high school graduate an average of more than 0.25 years sooner than students who have not taken AP calculus in high school. If we let denote the average time to graduate for students who have not taken AP calculus and denotes the average time to graduate for students who have taken AP calculus, then select the appropriate alternative hypothesis.

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I'm stuck on D because I'm having a hard time with P-value.

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A certain basketball team makes 70% of its free throws on average. In a game where the team shoots 40 free throws. what is the approximate probabillity that the number of free throws made by the team wilbe at least 25%

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In the DBE 122 class, there are 350 possible points. These points come from 5 homework sets that are worth 10 points each and 3 exams that are worth 100 points each. A student had received homework scores of 7,8,7,5, and 8 and the first two exam scores are 81 and 80. Assuming that grades are assigned according to the standard scale, where if the grade percentage is 0.9 or higher the student will get an A and if the grade percentage is between 0.8 and 0.9 the student will get a B, and there are no weights assigned to any of the grades. Is it possible for the student to receive an A in the class? What is the minimum score on the third exam that will give an A? What about a B?

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For the queation- "In fact, some new research suggests that to ensure a productive conversation the maximum message length should be no more than 8 words greater than the minimum message length in any conversation."
Is maximum messge length the response or explanatory vairable?
Hence, is minimum mesage length the reposne or explanatory variable?

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For example, for student ID s1243657, the 4th digital of s1243657 is “3”, therefore variable “A” is “Use interactive activities”; the 5th digital of s1243657 is “6”, therefore variable “B” is “Give a lot of assignments”; the 6th digital of s1243657 is “5”, therefore variable “C” is “Good communication skills. Take student id S12042516 as an example.
With the data collected, Dr Tian ran a test to see if there were significant relationships between A, B, C and satisfaction toward e-learning.
i ) Suggest the test that should be used and explain your reason.
State the independent and dependent variables, underlying null and alternative hypotheses.

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1. a car rental company conducted a survey among 580 customers to gain ideas about a vehicle. The survey showed that 200 customers prioritized vehicle safety above all other features, 160 customers prioritized vehicle size above all other features, and 40 were not interested in either features.
a)recreate the information detailed above in a venn diagram in order to show the number of customers that preferred vehicle safety and vehicle size equally.
b) Solve for x, to determine the number of people who consider both features equally important
c) determine the probability that a customer would consider both features equally important.
2. a) determine the probability that a customer would chose a vehicle based on it's safety.

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We wish to demonstrate that the average time to graduate from school is afected by the students who have taken AP calculus in hgh school. Specially, we wish to demonstrate the students who have taken AP calculus in high school graduate an average of more than .25 years sooner than students who have not taken AP calculus in high school. If we let μ1 denote the average time to graduate for students who have not taken AP calculus and μ2 dentoe the average time to graduate for students who have taken AP calculus, what is the apropriate null hypothesis

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Claim: A
minority
of adults would erase all of their personal information online if they could. A software firm survey of
688
randomly selected adults showed that
37%
of them would erase all of their personal information online if they could. Complete parts (a) and (b) below.
a. Express the original claim in symbolic form. Let the parameter represent the adults that would erase their personal information.

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In a study of 48 cases of a certain diseases, it was noted that 17 cases developed complications, a frequency of 35%.
a. Within the limits, would you expect the true frequency of complications in such cases to be contained?
b. Suppose that you observed 170 complications in 480 cases, within what limit would you expect the true frequency of complication in such cases to be contained?
c. How do you explain the difference between a and b?

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A researcher wants to explore the differences in health effects from two different types of sugar. She hypothesizes that artificial sweetener has lower long term health benefits than natural sugar. What is her null hypothesis? Fill in the blank.
H0: μArtificalSweetener__________ μNaturalSugar
Group of answer choices
a) Less than
b) Less than or equal to
c) Greater than
d) Greater than or equal to

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