# Questions

## Which Of The Following Scenarios Should Be Analyzed As Paired Data

Which of the following scenarios should be analyzed as paired data? a) Spouses are asked about the number of hours of sleep they get each night. We want to see if husbands get more sleep than wives. b) 50 insomnia patients are given a placebo and 50 are given a mild sedative. Which subjects sleep …

## I Obey The Law More Often If There’s A Chance That I Might Get Caught.

I obey the law more often if there is a chance that I might get caught. Not at all true Slightly true Somewhat true Mostly true Very true Answer Not at all true. Not true at all – as you wish. Explanation This question assesses your inclination to follow regulations and rules even if they …

## If It Takes 42 Minutes To Load 3 1/2 Trucks, How Many Minutes Will It Take To Load 6 1/2 Trucks?

If it takes 42 minutes to load 3 1/2 trucks, how many minutes will it take to load 6 1/2 trucks? Answer: 78 minutes Explanation Let x represent the number of minutes it takes to load 1 truck. We know that it takes 42 minutes to load 3*1/2 trucks. The time it takes to load …

## Use The Midpoint Rule With The Given Value Of N To Approximate The Integral

Use the Midpoint Rule with the given value of n to approximate the integral. Round the answer to four decimal places. ∫2 0 x/x+1 dx, n = 5 Answer: 0.9071 In this case, a = 0, b = 2, n = 5. Find the width of the intervals:

## Are Good Grades In High School Associated With Family Togetherness

Are good grades in high school associated with family togetherness? A random sample of 142 high school students was asked how many meals per week their families ate together. Their responses produced a mean of 3.78 meals per week, with a standard deviation of 2.2. Researchers then matched these responses against the students’ grade point …

## Boxes A And B Are In Contact On A Horizontal Frictionless Surface

Boxes A and B are in contact on a horizontal, frictionless surface. Box A has mass 20.0 kg and box B has mass 5.0 kg. A horizontal force of 250 N is exerted on box A. What is the magnitude of the force that box A exerts on box B? Answer: Fa = 50 N …

## Sketch The Graph Of An Example Of A Function F That Satisfies

Sketch the graph of an example of a function f that satisfies all of the given conditions. lim x→0- f(x)=-1, lim x→0+ f(x)=2, f(0)=1 Answer There are many possible graphs that satisfy the given conditions, I will give three examples. Note that the Limit from the left side must be -1 The functional value, represented …

## Explain The Difference Between An Absolute Minimum And A Local Minimum.

Explain the difference between an absolute minimum and a local minimum. Answer Local minimum is the smallest value that a function has on some open interval (which is part of domain). Absolute minimum is the smallest value that a function has on its entire domain. Note: Local minimum can be reached in just one point. …

## How Many Unpaired Electrons Are Present In The Ground State Of The Atoms In Group 6a(16)?

How many unpaired electrons are present in the ground state of an atom from of the following groups? (a) 4A(14), (b) 7A(17), (c) 1A(1), (d) 6A(16) Answer A) In the group 4A there are 2 unpaired electrons in the ground state. B) In the group 7A there is 1 unpaired electron in the ground state. …

## Prokaryotes Are Classified As Belonging To Two Different Domains. What Are The Domains?

Prokaryotes are classified as belonging to two different domains. What are the domains? Answer The two domains to which Prokaryotes belong are the Bacteria and Archaea domains. Prokaryotes, which include bacteria and archaea, may be found almost everywhere – in every ecosystem, on every surface of our homes, and even within our bodies! Some live …

## Evaluate The Indefinite Integral As An Infinite Series. Cos(X) − 1 X Dx

Evaluate the indefinite integral as an infinite series. Integral Cosx-1/x dx Answer We evaluate the given indefinite integral as an expression of an infinite series. Here we are going to use the Maclaurin series representation of some functions, and work our way through to obtain a similar pattern of expression. Given the indefinite integral

## A Car Drives Over The Top Of A Hill That Has A Radius Of 50m

A car drives over the top of a hill that has a radius of 50 m. What maximum speed can the car have without flying off the road at the top of the hill? Answer: v = 22.147 m/s Explanation r = 50 m The forces acting on the car are the normal reaction of …

## How Many Lone Pairs Are On The Central Atom In BCl3?

a. How many lone pairs are on the central atom in BCl3? Express your answer numerically as an integer. b. How many lone pairs are on the central atom of BrF3? Express your answer numerically as an integer. Answer: A) None, 0; B) 2. The valence electrons of the chemical elements that are bonding and …

## What Is The Sphere’s Angular Velocity At The Bottom Of The Incline?

An 8.0-cm-diameter, 400 g solid sphere is released from rest at the top of a 2.1-m-long, 25∘ incline. It rolls, without slipping, to the bottom. a. What is the sphere’s angular velocity at the bottom of the incline? b. What fraction of its kinetic energy is rotational? Answer

## Select All Of The True Statements Regarding Chemical Equilibrium.

Select all the true statements regarding chemical equilibrium: The concentrations of reactants and products remain constant. The concentrations of reactants and products are equal. Reactants are still being converted to products (and vice versa). The rates of the forward and reverse reactions are equal. Answer The first statement is false because the products and reactants …

## Which Of The Following Electron Configurations Correspond To An Excited State

Which of the following electron configurations correspond to an excited state? Identify the atoms, and write the ground-state electron configuration where appropriate. 1s ^ { 2 } 2 s ^ { 2 } 3 p ^ { 1 }1s^22s^23p^1 Answer: The atom is Boron(B) which ground-state electron configuration is 1s^22s^22p^1 Explanation Electron configuration helps us …

## A Series RLC Circuit Has A 200 kHz Resonance Frequency.

A series RLC circuit has a 200 kHz resonance frequency. What is the resonance frequency if the capacitor value is doubled and the inductor value is halved? Answer: The resonance frequency will be the same. Explanation The resonance frequency in a series RLC circuit is given by the equation:

## Formic Acid, HCOOH, Is A Weak Electrolyte.

Formic acid, HCOOH, is a weak electrolyte. What solutes are present in an aqueous solution of this compound? Write the chemical equation for the ionization of HCOOH. Answer: In a given solution we’d have HCOOH, H+, and HCOO-. Explanation

## One Number Is 2 More Than 3 Times Another Their Sum Is 22 Find The Numbers

One number is 2 more than 3 times another. Their sum is 22. Find the numbers. 8, 14 5, 17 2, 20 4, 18 10, 12 Answer: 5, 17 Explanation Let x represent the first number and y represent the second number. The second number is 2 more than 3 times the first number: y …

## You Live On A Busy Street, But As A Music Lover, You Want To Reduce The Traffic Noise.

Unless indicated otherwise, assume the speed of sound in air to be v = 344 m/s. You live on a busy street, but as a music lover, you want to reduce the traffic noise. (a) If you install special sound-reflecting windows that reduce the sound intensity level (in dB) by 30 dB, by what fraction …