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sergey [27]
3 years ago
13

After comparing response times between the audio and picture portions of the MIT test, the t-test resulted in a t-value of 2.97.

Given that the sample size was 250 and the t-value at p = 0.05 is 1.96, what can I conclude from this data?
a. accept the hypothesis, the sample size is too small.
b. accept the null hypothesis, the sample size is large enough.
c. reject the hypothesis, the p value is less than 0.05. therefore the difference is significant.
d. we cannot conclude anything because the sample size is too small.
e. reject the null hypothesis the p value is less than 0.05. therefore the difference is significant.
Mathematics
1 answer:
Veronika [31]3 years ago
5 0

Answer:

e. reject the null hypothesis the p value is less than 0.05. therefore the difference is significant.

Step-by-step explanation:

given that after comparing response times between the audio and picture portions of the MIT test, the t-test resulted in a t-value of 2.97.

test statistic t = 2.97

Sample size n =250

Critical value of t at 95% is 1.96

We find that test statistic absolute value is greater than 1.96

So p value would be less than 0.05

This implies that null hypothesis stands in the rejected region.

So reject null hypothesis would be correct conclusion.  Sample size cannot be said to be small as more than 30 itself is a good sample size.

e. reject the null hypothesis the p value is less than 0.05. therefore the difference is significant.

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Please help me , at least do one and explain it please .
Len [333]

9514 1404 393

Answer:

  1. 113.0 cm²
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  3. 95.0 ft²

Step-by-step explanation:

1. The area of a circle is given by the formula ...

  A = πr² . . . . . where r is the radius

The radius is shown as 6 cm, so the area is ...

  A = (3.14)(6 cm)² = 113.0 cm²

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2. The radius is shown as 28 in. We note that this is a number divisible by 7, so we choose 22/7 for π.

  A = (22/7)(28 in)² = 2464 in² . . . . see comment

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3. The radius is half the diameter, so is 11/2 = 5.5 ft. Then the area is ...

  A = (3.14)(5.5 ft)² = 95.0 ft²

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<em>Additional comment</em>

If you use a more exact value of π for problem 2, the area is 2463.0 in². If you use 3.14 as the value of π, the area rounds to 2461.8 in². For these values of pi (3.14 or 22/7), the answer is only good to about 3 significant digits. 2464 has more significant digits, so digits beyond the first 3 may be in error.

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Okay, so first, the quadrants on a coordinate plane go counter clockwise.

                          2                 |               1

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(1/2, -1.8) Would be a little to the right of the y axis, and a little below the x axis.

So, your answer would be D) Quadrant IV

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3 years ago
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