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Ratling [72]
2 years ago
12

Researchers are studying two different designs of computer keyboards, j and k, to investigate the effectiveness of the design on

the speed of data entry. The researchers believe there is a tendency for people entering data with keyboard j to have faster entry times compared with people entering data with keyboard k. Using the same set of data for entry, the researchers randomly assigned 5 people to keyboard j and 6 people to keyboard k and recorded the number of seconds each person took to enter the data. The following dotplots show the observed entry times for the two keyboards
SAT
1 answer:
Allushta [10]2 years ago
3 0

The data from the people using the j and the k keyboards reveal that it is not appropriate to conduct the two-sample statistical t-test, as there was the presence of outliers.

<h3>What is a two-sample t-test?</h3>

It is a statistical test that is used in the determination of the equality of the two mean populations. The test is used for the analysis of the statistical difference between the two tests.

The test data for the two keyboards have been based on the presence of the outliners in the data. This helps in the analysis of the population with the median, and not with the mean.

Learn more about t-test, here:

brainly.com/question/15870238

#SPJ1

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There is a movement along a stable demand curve.

No A is the answer

Explanation:

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Which about mama does the author show in this passage from everyday use.
LenKa [72]

People often have different opinions or views. Which about mama that the author show in this passage from everyday use is that Mama is ordinary and Humble.

This passage depicts mama to be a very strong woman, who lives an ordinary life, humble in nature and still what she the advantages of her body shape and type.

She believes that been  big is aa plus to her as this will gives her strength It also helps us to know that she is just as ordinary woman who is capable of completing difficult tasks.

See full question below

Which about Mama does the author show in this passage from "Everyday Use?

" In real life I am a large, big–boned woman with rough, man–working hands. In the winter I wear flannel nightgowns to bed and overalls during the day. I can kill and clean a hog as mercilessly as a man. My fat keeps me hot in zero weather."

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3 0
3 years ago
Make an inference about the characters and their motivations in this scene. What did juliet do? what did the nurse do? what moti
Marat540 [252]

People often play a lot of roles. The answers to the questions are below.

  • Juliet  was said to have sent the nurse to speak with Romeo.
  • The nurse agreed to this request.
  • What motivated Juliet to make this request is that her desire to marry Romeo.
  • What motivated the nurse to go on this quest is that She cares about Juliet's happiness.

<h3>What is the Romeo and Juliet story about?</h3>

The story of Juliet and Romeo is one that is said to  be based on the life story of two real lovers who were said to have lived and died for each other. The place where this people  stayed was in Verona, Italy in the year 1303.

Shakespeare is said to be the one  who discovered this tragic love story in the poem of Arthur Brooke in 1562 which was titled “The Tragical History of Romeo and Juliet”.

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7 0
2 years ago
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A probe orbiting Venus exerts a gravitational force of 2. 58 × 103 N on Venus. Venus has a mass of 4. 87 × 1024 kg. The mass of
andriy [413]

Answer:

9.08

Explanation:

To solve for the distance between the probe and  the center of Venus, use the formula:

\mathrm{F = \frac{G\: m1 \:m2}{r^2}}

 

<u>Plugin the values</u>:

G =

6.67\times10^{-11} \mathrm{\frac{m3}{kg\: s2}}

\mathrm{F} =2.58 \times 10^3\mathrm{N}

\mathrm{m1 = 4.87 \times 10^{24}\:kg}

\mathrm{m2 = 655\: kg}

Hence:

\mathrm{F = \frac{G\: m1 \:m2}{r^2}}

2.58  \times 10^{23} = 6.67 \times 10^{-11} (4.87 \times 10^{24})

\frac{(655)}{r^2}

\mathrm{r = 9.08 \times 10^6 \:km}

4 0
3 years ago
chlorine is made up of 75.78% 35cl and 24.22% 37cl. the atomic mass of 35cl is 34.969 amu. the atomic mass of 37cl is 36.966 amu
FrozenT [24]

Answer: 34.968 amu, 35.453 amu, 35,968 amu, 36,966 amu

Explanation:

3 0
3 years ago
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