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Mkey [24]
3 years ago
11

Students on an academic team took a test to enter a math competition. They could take the test twice. Some students improved the

ir score, while others did not. The table shows the change in score for each student. Which student had the greatest overall change in his or her score?
Student Test Score Change
Joe –2
Nivea 3
Juanita 4
Li –3
Mathematics
1 answer:
katrin [286]3 years ago
6 0

Juanita had the largest change. (+4 points)

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Maggie bought 3 dozen muffins from a baker for $48. Find the costs of 1 dozen muffins and 9 dozen muffins.
Gennadij [26K]
We will say that d = 1 dozen. and y = cost

we know that 3 dozen is 48. so
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3 years ago
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Answer:

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2 years ago
A Gallup survey of 2322 adults (at least 18 years old) in the U.S. found that 408 of them have donated blood in the past two yea
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Answer: aA 90% confidence interval for the population proportion of adults in the U.S. who have donated blood in the past two years = (0.163,0.189)

Step-by-step explanation:

Let p = population proportion of adults in the U.S. who have donated blood in the past two years.

Given: A Gallup survey of 2322 adults (at least 18 years old) in the U.S. found that 408 of them have donated blood in the past two years.

Sample size: n= 2322

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Critical z-value for 90% confidence level : z*=1.645

The confidence interval for population proportion:

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A 90% confidence interval for the population proportion of adults in the U.S. who have donated blood in the past two years:

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Hence,

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3 years ago
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