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Jen
Questions and answers by
Jen
, page 8
Questions (1,135)
I know a steady force produces a steadily increasing velocity and a constant acceleration. But what happens when you increase
1 answer
461 views
How do write this as a journal entry transaction?
Alex transferred $17,000 from his personal bank account to the corporation in
1 answer
439 views
Describe whether the following study would most likely be “observational” or “experimental”, and why it would be so.
*
5 answers
559 views
Classify the following variable as nominal, ordinal, discrete, or continuous and state why it is such a variable:
number of US
3 answers
833 views
A candidate for a political office claims that he will win the election. A poll is conducted, and 35 of 150 voters indicate that
2 answers
583 views
A candidate for a political office claims that he will win the election. A poll is conducted, and 35 of 150 voters indicate that
1 answer
456 views
A candidate for a political office claims that he will win the election. A poll is conducted, and 35 of 150 voters indicate that
1 answer
474 views
A candidate for a political office claims that he will win the election. A poll is conducted, and 35 of 150 voters indicate that
5 answers
609 views
Construct a grouped frequency distribution for the following 28 scores using a class width of 4:
64 63 58 46 52 62 47 49 56 47 43
3 answers
389 views
Construct a frequency distribution table to organize the following set of data:
16 23 24 23 24 20 15 16 21 15 16 19 17 15 23 16
1 answer
472 views
Can either one of you help me with the math problems I asked? I really need help and do not understand how I would calculate the
1 answer
385 views
A candidate for a political office claims that he will win the election. A poll is conducted, and 35 of 150 voters indicate that
1 answer
484 views
Construct a grouped frequency distribution for the following 28 scores using a class width of 4:
64 63 58 46 52 62 47 49 56 47 43
1 answer
436 views
A candidate for a political office claims that he will win the election. A poll is conducted, and 35 of 150 voters indicate that
1 answer
473 views
Regular-strength chlorine bleach is a 5.25% solution of NaClO. how many milliliters of 0.02005 M sodium thiosulfate will be
3 answers
562 views
A candidate for a political office claims that he will win the election. A poll is conducted, and 35 of 150 voters indicate that
1 answer
426 views
Construct a grouped frequency distribution for the following 28 scores using a class width of 4:
64 63 58 46 52 62 47 49 56 47 43
4 answers
826 views
An insecticide company exposes 10,000 cockroaches to its newest product, and exposes another 10,000 to their previous formula.
1 answer
460 views
I have no idea where to even start with this problem on my pre-lab!
For part of the experiment, you will need to prepare 100 mL
4 answers
1,254 views
Identify the sampling technique used to obtain this sample:
Each person boarding a plane is asked to flip a coin; those showing
1 answer
327 views
In your own line of work, give one example of a discrete
and one example of a continuous random variable, and describe why each
3 answers
564 views
Identify the sampling technique used to obtain this sample:
Each person boarding a plane is asked to flip a coin; those showing
3 answers
461 views
A set of 50 data values has a mean of 15 and a variance of 25. Find the standard score of a data value = 20
1 answer
408 views
Start with x = 100 and add four x values to make a sample of five data such that the standard deviation of these data equals 0
1 answer
361 views
A 4.3-kg block slides down an inclined plane that makes an angle of 26° with the horizontal. Starting from rest, the block
2 answers
696 views
A set of 50 data values has a mean of 15 and a variance of 25. Find the standard score of a data value = 20
3 answers
405 views
Start with x = 100 and add four x values to make a sample of five data such that the standard deviation of these data equals 0
3 answers
358 views
A set of 50 data values has a mean of 15 and a variance of 25. Find the standard score of a data value = 20.
I'm not sure how to
1 answer
384 views
For a particular sample of 63 scores on a psychology exam, the following results were obtained.
First quartile = 57 Third
1 answer
497 views
In terms of the mean and standard deviation:
-What does it mean to say that a particular value of x has a standard score of +2.1?
1 answer
398 views
A student scored 81 percent on a test, and was in the 77th percentile. Explain these two numbers.
4 answers
430 views
In each of the four examples listed below, one of the given variables is independent (x) and one of the given variables is
3 answers
478 views
A sample of purchases at the local convenience store has resulted in the following sample data, where x = the number of items
3 answers
562 views
Scores on the Stanford-Binet Intelligence scale have a mean of 100 and a standard deviation of 16, and are presumed to be
5 answers
848 views
SAT I scores around the nation tend to have a mean scale score around 500, a standard deviation of about 100 points, and are
2 answers
544 views
1) The specific heat of solid copper is 0.385 J/g(C). What thermal energy change occurs when the temperature of a 34.10 g sample
5 answers
2,355 views
6. In each of the four examples listed below, one of the given variables is independent (x) and one of the given variables is
3 answers
661 views
For a particular sample of 63 scores on a psychology exam, the following results were obtained.
First quartile = 57 Third
2 answers
538 views
A sample of purchases at the local convenience store has resulted in the following sample data, where x = the number of items
3 answers
473 views
Scores on the Stanford-Binet Intelligence scale have a mean of 100 and a standard deviation of 16, and are presumed to be
2 answers
574 views
SAT I scores around the nation tend to have a mean scale score around 500, a standard deviation of about 100 points, and are
3 answers
629 views
For a particular sample of 63 scores on a psychology exam, the following results were obtained.
First quartile = 57 Third
1 answer
509 views
In each of the four examples listed below, one of the given variables is independent (x) and one of the given variables is
11 answers
1,144 views
For a particular sample of 63 scores on a psychology exam, the following results were obtained.
First quartile = 57 Third
2 answers
556 views
For the table that follows, answer the following questions:
x y 1 1/2 2 1 3 3/2 4 - Would the correlation between x and y in the
4 answers
600 views
A. If the correlation coefficient is 0.65, what is the sign of the slope of the regression line?
B. As the correlation
3 answers
1,799 views
Three cards are selected, one at a time from a standard deck of 52 cards. Let x represent the number of tens drawn in a set of 3
1 answer
389 views
You are given the following data.
# of Absences Final Grade 0 96 1 92 2 71 3 66 4 60 5 51 A. Find the correlation coefficient for
1 answer
364 views
Seventy million pounds of trout are grown in the U.S. every year. Farm-raised trout contain an average of 32 grams of fat per
4 answers
2,148 views
Seventy million pounds of trout are grown in the U.S. every year. Farm-raised trout contain an average of 32 grams of fat per
1 answer
631 views
Consider the experiment of simultaneously tossing a fair coin and rolling a fair die. Let X denote the number of heads showing
2 answers
668 views
In testing a new drug, researchers found that 10% of all patients using it will have a mild side effect. A random sample of 14
1 answer
442 views
x y
1 -10.0 2 -20.0 3 -30.0 4 -40.0 5 -50.0 - What would be the slope of this regression line? - Would the correlation between x
1 answer
423 views
Find the mean and standard deviation of the following probability distribution:
x 1 2 3 P(x) 0.3 0.5 0.2
1 answer
378 views
A bag of colored blocks contains the following assortment of colors:
red (18), blue (14), orange (20), purple (14), green (10),
1 answer
409 views
In testing a new drug, researchers found that 10% of all patients using it will have a mild side effect. A random sample of 14
1 answer
639 views
3. In testing a new drug, researchers found that 10% of all patients using it will have a mild side effect. A random sample of
3 answers
500 views
Find the z-score for the standard normal distribution where:
Area = 0.95 to the left of z
4 answers
2,569 views
A set of 50 data values has a mean of 18 and a variance of 4.
I. Find the standard score (z) for a data value = 20. II. Find the
1 answer
360 views
Which of the following solutions is the most basic? (a) 0.6 M NH3, (b) 0.150 M KOH, (c) 0.100 M Ba(OH)2. Explain.
2 answers
961 views
Hydrogen sulfide is an impurity in natural gas that must be removed.
One common removal method is called the Claus process, which
3 answers
2,218 views
Can genetic mutations also occur within mitochondria and cause diseases? if yes, how common are these diseases?
1 answer
493 views
Given a binomial distribution with n = 21 and p = 0.76, would the normal distribution provide a reasonable approximation? Why or
1 answer
357 views
Determine the level of the confidence given the confidence coefficient z(α/2) for the following situation:
z(α/2) = 1.96
2 answers
520 views
The width of the Confidence Interval is inversely related to the Maximum Error of Estimate. T or F? Why or why not?
2 answers
733 views
Assume that the population of heights of male college students is approximately normally distributed with mean of 72.83 inches
2 answers
545 views
A rock thrown with an initial velocity of 35 m/s at an angle of 48° with respect to the horizontal has a range of 963 m on a
3 answers
556 views
Why are your ears at the side of your head and not in front where your eyes are?
4 answers
692 views
How can you experimentally determine the total volume of blood in a human?
1 answer
381 views
A .1kg mass is located on the line between a 5kg mass and a 10kg mass. It is 4m to the right of the 5kg mass and 6m go the left
1 answer
447 views
Suppose that fifteen observations are chosen at random from the pdf f_Y(y) = 3y^2, 0<=y<=1. Let X denote the number that lie in
3 answers
802 views
The solubility of NH3 in H20 is 518 g/L at a partial pressure of 760.0 torr.
1. Calculate the value of the Henry's Law constant
3 answers
545 views
Records show that deaths occur at the rate of 0.1 per day among patients residing in a large nursing home. If someone dies
2 answers
559 views
A drag racer starts her car from rest and accelerates at 9.0 m/s2for the entire distance of 60.0 m. What is its speed at the end
4 answers
1,792 views
Daniel tosses a ball upwards with an initial velocity of 10.0 m/s. In meters per second, what is the velocity of the ball 1.3
1 answer
415 views
Daniel tosses a ball upwards with an initial velocity of 10.0 m/s. In meters/second, what is the velocity of the ball 1.3
1 answer
400 views
An astronaut on a distant planet wants to determine its acceleration due to gravity. The astronaut throws a rock straight up
3 answers
1,148 views
A woman on a bridge 77.4 m high sees a raft floating at a constant speed on the river below. She drops a stone from rest in an
3 answers
846 views
The three-toed sloth is the slowest moving land mammal. On the ground, the sloth moves at an average speed of 0.0330 m/s,
3 answers
918 views
In the sentence, "Sylvia looks good in her mermaid costume" why is good the correct word used as an adjective, as opposed to
2 answers
486 views
A baseball (m = 149 g) approaches a bat horizontally at a speed of 39.8 m/s (89.0 mph) and is hit straight back at a speed of
1 answer
633 views
A 49.4 kg swimmer is standing on a stationary 214 kg floating raft. The swimmer then runs off the raft horizontally with a
1 answer
447 views
5pi/7 what quadrant is it in???
2 answers
682 views
what quadrant is this in and please explain... sin theta < 0, cos theta > 0
1 answer
386 views
Please explain to me how to get this -- what quadrant tan theta < 0, sin theta < 0 is in.
1 answer
320 views
A 0.579 kg basketball is dropped out of a window that is 6.22 m above the ground. The ball is caught by a person whose hands are
1 answer
982 views
A model rocket is shot straight up from the roof of a school. The height at any time t is approximated by the model
2 answers
738 views
Two friends, Al and Jo, have a combined mass of 171 kg. At an ice skating rink they stand close together on skates, at rest and
1 answer
647 views
The density of liquid "A" is 1.80gm/ml, liquid "B" is 1.10 gm/ml and liquid "C" is 1.40 gm/ml. If theses liquids are immiscible
2 answers
641 views
If the heat from burning 5.800 g of C6H6 is added to 5691 g of water at 21 °C, what is the final temperature of the water?
2C6H6
13 answers
2,125 views
___A
__/__\ B/____\C radius (each side of this equilateral triangle) 0.5 m Three point charges are located at the corners of an
2 answers
808 views
A company produces three types of color TVs: Models X, Y and Z. Each model X requires 2 hours of electronic work and 2 hours of
2 answers
560 views
A solution is made by dissolving 0.584 mol of nonelectrolyte solute in 883 g of benzene. Calculate the freezing point and
7 answers
1,212 views
An astronaut is inside a rocket that is blasting off vertically from the launch pad. You want this rocket to reach the speed of
5 answers
5,656 views
You buy coffee (200.0 ml) served in a styrofoam cup. You are up late working in a chemistry lab, and want to drink the coffee
1 answer
614 views
a carpainter made 20 pieces of furniture comprising of 74 legs. stool of 3 legs and chairs of 4 legs. How many chairs and stools
7 answers
444 views
"Christina Nehring makes allusions to classical myths and 18th and 19th century writers in her essay "Fideltiy with a Wandering
2 answers
690 views
If the initial volume is 150mL and the final volume is 1L, what is the final pressure?
1 answer
321 views
Lily and Tina went to dinner. When the bill came, Lily discovered that she had only $6. Luckily, Tina had enough money to pay
4 answers
474 views
Which of the following accurately describes a surplus?
Consumer demand for a certain car is below the number of cars that are
4 answers
1,345 views
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