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Ber [7]
3 years ago
12

The mean age of a student book club is 14.2 years. A 27-year-old teacher is invited to join the club. How does the teacher’s age

affect the mean?
A. The new mean age will be 20.6 years.

B. The new mean age will be greater than 14.2 years.

C. The new mean age will be less than 14.2 years.

D. The new mean age will still be 14.2 years.
Mathematics
2 answers:
IgorC [24]3 years ago
7 0
I think its b.im not sure though.
MAXImum [283]3 years ago
3 0
The new mean age will be greater than 14.2 years because the teacher is older than the previous mean.
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Answer:

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Step-by-step explanation:

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Complete the square to transform the quadratic equation into the form
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3 years ago
What’s three points that satisfy the system of inequality’s of 4x+6y&lt;24
Vlada [557]

Answer:

(0,0), (1,1), (2,2)

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In this case:

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We then try with (1,1):

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And with (2,2):

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8 0
3 years ago
At a university, 60% of the 7,400 students are female. The student newspaper reports the results of a survey of a random sample
omeli [17]

Given Information:

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Sample size = n = 50

Required Information:

Sample mean = μ = ?

standard deviation = σ = ?

Answer:

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standard deviation = σ = 0.069

Step-by-step explanation:

We know from the central limit theorem, the sampling distribution is approximately normal as long as the expected number of successes and failures are equal or greater than 10

np ≥ 10

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The standard deviation for this sampling distribution is given by

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\sigma = \sqrt{\frac{0.60(1-0.60)}{50} }\\\\\sigma = \sqrt{\frac{0.60(0.40)}{50} }\\\\\sigma = \sqrt{\frac{0.24}{50} }\\\\\sigma = \sqrt{0.0048} }\\\\\sigma =  0.069

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4 0
2 years ago
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Volgvan

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A customer will pay $225.5 for one rug.

Keywords: percentage, markup

Learn more about percentages at:

  • brainly.com/question/10717746
  • brainly.com/question/10736268

#LearnwithBrainly

5 0
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