High school statistics questions and answers

Recent questions in High school statistics
Raina Cole 2022-12-27

What number is 12% of 45?

Keira Gibson 2022-12-19

The probability that an automobile being filled with gasoline also needs an oil change is 0.30; the probability that it needs a new oil filter is 0.40; and the probability that both the oil and the filter need changing is 0.10. (a) If the oil has to be changed, what is the probability that a new oil filter is needed? (b) If a new oil filter is needed, what is the probability that the oil has to be changed?

Kolton Rush 2022-12-19

Leasing a car. The price of the car is​$45,000. You have ​$3000 for a down payment. The term of the lease is and the interest rate is ​3.5% APR. The buyout on the lease is​51% of its purchase price and it is due at the end of the term. What are the monthly lease payments​ (before tax)?

Charlie Glass 2022-12-19

The mean of sample A is significantly different than the mean of sample B. Sample A: $59,33,74,62,87,73$ Sample B: $53,67,72,57,93,79$ Use a two-tailed $t$-test of independent samples for the above hypothesis and data. What is the $p$-value?

glucidessho 2022-12-11

What is mean and its advantages?

Mollie Wise 2022-12-04

Which statement is true?Group of answer choicesThe larger the standard deviation, the higher the total risk.The larger the standard deviation, the lower the total risk.The standard deviation is not an indication of total risk.None of these are correct.

Brenda Leach 2022-12-01

Which among the following is not a fundamental force of nature? Gravitational ForceElectromagnetic ForceBuoyant ForceWeak Nuclear Force

Scott Valenzuela 2022-11-29

Еhere is a question that worries me: Why is it correct to say​ a normal distribution and​ the standard normal​ distribution?

Marques Flynn 2022-11-27

For the data in the table, does y vary directly with x? Write an equation for the direct variation.$x:8,16,24\phantom{\rule{0ex}{0ex}}y:11,22,33$a. yes; y = 2.75xb. yes; y = 0.6875xc. yes; y = 1.375xd. no; y does not vary directly with x

Talia Frederick 2022-11-26

Which of the following is not a measure of central tendency? Mode Standard deviation Median Mean

modnimCYf 2022-11-25

Find the equation of the line perpendicular to $y=-\frac{7}{16}x$ that passes through (5,4)

liachta6VW 2022-11-25

agrarismoN07 2022-11-24

You collect data from some population with mean $\mu$ and standard deviation $\sigma$ to test the following hypotheses: . You obtain a p-value of 0.053. Which of the following is true? a. A 95% confidence interval for $\mu$ will include the value 14. b. A 95% confidence interval for $\mu$ will include the value 1. c. A 90% confidence interval for $\mu$ will include the value 1. d. A 90% confidence interval for $\mu$ will include the value 14.

Elisha Cancino 2022-11-23

Scores for a common standardized college aptitude test are normally distributed with a mean of 490 and a standard deviation of 103. Randomly selected students are given a Test Preparation Course before taking this test. Assume, for sake of argument, that the preparation course has no effect. If 1 student is randomly selected, find the probability that their score is at least 527.3.P(X > 527.3) = If 11 students are randomly selected, find the probability that their mean score is at least 527.3.P(¯¯¯X$\overline{X}$ > 527.3) =

Goundoubuf 2022-11-23

i'm seeking out thoughts for a 15-hour mathematical enrichment course in a chinese language high faculty. What (pretty) simple concern would you advocate as a subject for any such course?historical past/issues:My students are generally pretty good at math, but many of them have no longer been uncovered to rigorous or summary mathematical reasoning. an amazing topic would be one that could not be impossibly hard for students who have by no means written or study proofs in English.i have taught this magnificence three times earlier than. (a part of the purpose that i'm posting that is that i have used up all my thoughts!) the primary semester I taught an introductory range theory elegance (which meandered its way toward a proof of quadratic reciprocity, though I think this become in the end too advanced/abstract for some of the students). the second one semester I taught fundamental graph idea and packages (with a focal point on planarity and coloring). The 1/3 semester I taught a class at the Rubik's dice.the students' math backgrounds are pretty numerous: a number of them take part in contest math competitions, and so are familiar with IMO-fashion techniques, however many aren't. a number of them may additionally realize some calculus, however I cannot assume it. all of them are superb at what in the united states is on occasion termed "pre-calculus": trigonometry, conic sections, systems of linear equations (though, shockingly, no matrices), and the like. They realize what a binomial coefficient is.So, any ideas? preferably, i'd like to find some thing a bit "sexy" (like the Rubik's cube) -- tries to encourage wide variety theory through cryptography seemed to fall on deaf ears, however being capable of "see" institution idea on the cube became pretty popular.(Responses specifically welcome from folks who grew up in the percent -- any mathematical subjects you desire were protected within the excessive college curriculum?)

Alvin Parks 2022-11-21

I'm a graduate student studying quantum mechanics/quantum information and would like to consolidate my understanding of linear algebra. What are some good math books for that purpose?

Jaiden Elliott 2022-11-19

How to deal with lack of peers?I am pursuing a B.S in Mathematics(freshman) in a country where people rarely study math for the sake of it and in a new university with good professors. Yet, it is new and I suffer from the lack of peers and it is literally impossible to pick up mathematical conversations on ideas with students . As a result, I find it difficult to exchange ideas with others.Is there something which can be done to make sure that lack of peers or the pressure to push oneself doesn't harm me much?

Uroskopieulm 2022-11-19

i'm going to start an test approximately drying leaves. I need to study how a few special kind of leaves are going to dry themselves in 2 distinctive scenario. a group of them will stay in a high density, and the some other institution i can spread out in a larger region (as an instance, 1 m2 for the primary, and 3 m2 for the second). Of route, i can repeat this experiment numerous times. in the end, i will get:Individual weight of the leaves (selecting samples) in the beginningIndividual weight along 4 daysIndividual weight in the endNutritional composition in the start and in the endI am remembering my knowledge in stats and R, but I am still lost. My question is, which is the best comparison method to analyse this data? I want to know:How the humidity content change along the daysTo dry this kind of leaves, which drying area is better?Is it statistical significance between both method about losing water and nutrient content?

Sophie Marks 2022-11-19

What's the difference between $\left(-x{\right)}^{2},-{x}^{2}$ and $\left(-x{\right)}^{2}$ ?$\left(-x{\right)}^{2}$ is definately equal to $\left(-1{\right)}^{2}\left(x{\right)}^{2}$, right?But $-\left(x{\right)}^{2}$ and $-{x}^{2}$ are confusing me, do they mean $-\left({x}^{2}\right)$ or do they mean $\left(-1{\right)}^{2}\left(x{\right)}^{2}$?

Kameron Wang 2022-11-18

Understanding Empirical Data Distribution"We can approximate $p\left(x,y\right)=p\left(x\right)p\left(y|x\right)$ using the empirical data distribution$p\left(x,y\right)=\frac{1}{N}\sum _{n=1}^{N}{\delta }_{{x}_{n}}\left(x\right){\delta }_{{y}_{n}}\left(y\right)"$In another part of the paper they say $p\left(y|{y}_{n}\right)={\delta }_{{y}_{n}}\left(y\right)$.I have some background in probability but none in statistics; I was able to figure out what an Empirical CDF is, but not a pdf like here, so I'm not sure exactly what the authors are doing. Does the $\delta$ refer to the Dirac delta distribution?

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