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Wittaler [7]
2 years ago
8

The average score on mid term examination of 25 students was 78.8 out 100

Mathematics
1 answer:
larisa86 [58]2 years ago
8 0
I honestly have no clue good luck I’m just trying to get points so I can use the app
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Dr. Park is interested in how the functioning of the brain changes with age and how this, in turn, affects older individuals’ me
a_sh-v [17]

Answer:

Option C.  No, because the two populations from which the samples are selected do not appear to have equal variances.

Step-by-step explanation:

The variance measures how far a set of (random) numbers are spread out from their average value.

The fact that the younger adults show diversity in their brain activity while the older adults produce similar activities show that there are no equal variances in the two populations from which the samples are selected.

Therefore it would not be valid for Dr. Park to use the independent-measures t-test to test whether the brain activity of younger adults is different from that of older adults during a visual recognition task

8 0
3 years ago
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309×29 solve it by using regrouping and partial products
Alina [70]
8961
309 \times 29
6 0
2 years ago
What is the slope of the lines! HELP PLEASE!!! 20points
Nimfa-mama [501]

Answer:

1/5

Step-by-step explanation:

pick any points, for example (6, -1) and (11, 0)

slope is m= (y2-y1) / (x2-x1) = -1-0 / 6-11 = -1 / -5 = 1/5

3 0
3 years ago
(x – 3)(4x + 2) using the distributive property. Select the answer choice showing the correct distribution
Nataly [62]

The distributive property: a(b + c) = ab + ac

(x - 3)(4x + 2) = (x)(4x + 2) + (-3)(4x + 2)

= (x)(4x) + (x)(2) + (-3)(4x) + (-3)(2) = 4x² + 2x - 12x - 6

<h3>= 4x² - 10x - 6</h3>
5 0
3 years ago
Which of the following expressions has a value that is less than –2?
natali 33 [55]

Answer:  A  

Step-by-step explanation: 0.25−2.50=-2.25

3 0
3 years ago
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