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Can someone confirm this: Arrays store only homogenous data. Because of this, and the fact that their length is pre-determined they require less memory than lists. In python

Each of the following scenarios can be modelled as a 1- or 2-sample location problem. For 1-sample problems, let Xi denote the random variables of interest and let μ = EXi. For 2-sample problems, let Xi and Yj denote the random variables of interest; let μ1 = EXi, μ2 = EYj, and ∆ = μ1 − μ2. For each scenario, you should answer/do the following:
(a) What is the experimental unit?
(b) From how many populations were the experimental units drawn? Identify the population(s). How many units were drawn from each population? Is this a 1- or a 2-sample problem?
(c) How many measurements were taken on each experimental unit? Identify them.
(d) Define the parameter(s) of interest for this problem. For 1- sample problems, this should be μ; for 2-sample problems, this should be ∆.
(e) State appropriate null and alternative hypotheses.

In the early 1960s, the Western Collaborative Group Study investigated the relation between behavior and risk of coronary heart disease in middle-aged men. Type A behavior is characterized by urgency, aggression and ambition; Type B behavior is noncompetitive, more relaxed and less hurried. The following data, which appear in Table 2.1 of Selvin (1991) and Data Set 47 in A Handbook of Small Data Sets, are the cholesterol measurements of 20 heavy men of each behavior type. (In fact, these 40 men were the heaviest in the study. Each weighed at least 225 pounds.) We consider whether or not they provide evidence that heavy Type A men have higher cholesterol levels than heavy Type B men.
From Problem Set B
(a) What is the experimental unit?
(b) From how many populations were the experimental units drawn? Identify the population(s). How many units were drawn from each population? Is this a 1- or a 2-sample problem?
(c) How many measurements were taken on each experimental unit? Identify them.
(d) Define the parameter(s) of interest for this problem. For 1- sample problems, this should be μ; for 2-sample problems, this should be ∆.
(e) State appropriate null and alternative hypotheses.

Say only 86% of students know this.
A worried prof. askes a number of students the following question...
Did you know there is no final exam for this class or not?
What is the probability that the 75

Let S be a closed surface consisting of a paraboloid (z = x²+y²), with (0≤z≤1), and capped by the disc (x²+y² ≤1) on the plane (z=1).
Determine the flow of the vector field F (x,y,z) = zj − yk, in the direction that points out across the surface S.

A professor of a introductory statistics class has stated that, historically, the distribution of final exam grades in the course resemble a normal distribution with a mean final exam mark of 60% and a standard deviation of 9%.
(a) What is the probability that a randomly chosen final exam mark in this course will be at least 75%?
(b) In order to pass this course, a student must have a final exam mark of at least 50%. What proportion of students will not pass the statistics final exam?
(c) The top 2% of students writing the final exam will receive a letter grade of at least an A in the course. To four decimal places, find the minimum final exam mark needed on the statistics final to earn a letter grade of at least an A in the course.

What is the expected pay grade? What is the standard deviation of expected pay grade? If a student expects to earn $18 a year for each %point they scored on their final grade

Problem 1. 11.28000 amount of hours 676.80000 amount of minutes) can go by before a prof. will recieve an email from a student asking about something that can be answered (3 points) Usually, 47% of a day (or 0.47 amount of day by looking in the course outline. (use at least five decimals in your answers if rounding) (a) Let X be the amount of time, in days that pass until a prof. will recieve an email about a topic listed on the course outline. How many days can you expect to pass between successive emails? Mx = 7.90000 hours, or 0.00549 days) has passed since the last email. What is the probability that in total, at least 611 minutes (or 10.18333 hours, or 0.00707 days) will pass until the next (b) At least 474 minutes (or email? (c) Let Y represent the number of emails in two days. Find the probability that the number of emails are between 3 and 9 inclusive. P(3 SY < 9) =

A. Explain the basic idea to detect the Corner Points in an image
b. If M is second moment matrix of image derivatives, please explain mathematically how to classify image points based on M Matrix!
c. Harris corner detector algorithm is based on above idea, together with additional step to enhance the detector. Please explain each step of Harris corner detector based on its original paper: C.Harris and M.Stephens. "A Combined Corner and Edge Detector“, Proceedings of the 4th Alvey Vision Conference: pages 147—151, 1988

Arenes are a special type of compound consisting of only carbon and hydrogen.If 5.000g of a specific arene with a molar mass approximately 155g/mol yields 17.123g of CO2.Upon combustion in a purely oxygen atmosphere.determine the a) empirical, and b) molecular formulas, for the compound.

A researcher selects a sample of n=25 individuals from a population with a mean of μ=60 and standard deviation of σ=10 and administers a treatment. The researcher predicts that the treatment will increase scores. Following the treatment, the average score for this sample is M=65

Diving deep under water without scuba gear is called ‘free diving.’ A world champion free diver dives to a depth of 91.3 m. What is the gauge pressure (i.e. pressure relative to the surface) at this depth, expressed in atmospheres (atm)?

The state of stress acting at a critical point on a machine element is shown in Figure . (i) Using Mohr’s circle method, determine the principal stresses, the shear stresses τ1 & τ2, and the corresponding normal stresses for the given state of stress. (ii) Show the principal stresses on a stress element with respect to the xy coordinates. (iii) Draw another stress element with respect to the xy coordinates to show the shear stresses τ1 & τ2, and the corresponding normal stresses. (iv) Determine the smallest yield stress for a steel that might be selected for the part.

Let T be the upper surface of the tetrahedron bounded by the coordinate planes and the plane x + y + z = 4.
Calculate the integral of the image below, where S is the face of T that is in the xy plane.