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garik1379 [7]
2 years ago
14

g The height (in inches) of adult men in the United States is believed to be Normally distributed with mean μ μ . The average he

ight of a random sample of 25 American adult men is found to be ¯ x = 69.72 x¯=69.72 inches, and the standard deviation of the 25 heights is found to be s = 4.15 s=4.15 . A 90% confidence interval for μ μ is:
Mathematics
1 answer:
ELEN [110]2 years ago
8 0

Answer:

daSdadaSdad

Step-by-step explanation:

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Giving brainliest!!!!!!!!!!
son4ous [18]
It’s A i did the test myself..
5 0
3 years ago
Now, you will consider Option 1, setting a maximum shower time of 10 minutes.
matrenka [14]

The maximum shower time is an illustration of mean and median, and the conclusion is to disagree with Blake's claim

<h3>How to interpret the shower time?</h3>

The question is incomplete, as the dataset (and the data elements) are not given.

So, I will answer this question using the following (assumed) dataset:

Shower time (in minutes): 6, 7, 7, 8, 8, 9, 9, 9, 12, 12, 12, 13, 15,

Calculate the mean:

Mean = Sum/Count

So, we have:

Mean = (6+ 7+ 7+ 8+ 8+ 9+ 9+ 9+ 12+ 12+ 12+ 13+ 15)/13

Mean = 9.8

The median is the middle element.

So, we have:

Median = 9

From the question, we have the following assumptions:

  • The shower time of students whose shower times are above 10 minutes, is 10 minutes
  • Other shower time remains unchanged.

So, the dataset becomes: 6, 7, 7, 8, 8, 9, 9, 9, 10, 10, 10, 10, 10

The mean is:

Mean = (6+ 7+ 7+ 8+ 8+ 9+ 9+ 9+ 10+ 10+ 10+ 10+ 10)/13

Mean = 8.7

The median is the middle element.

So, we have:

Median = 9

From the above computation, we have the following table:

               Initial    Final

Mean         9.8        8.7

Median       9         9

Notice that the mean value changed, but it did not go below 8 as claimed by Blake; while the median remains unchanged.

Hence, the conclusion is to disagree with Blake's claim

Read more about mean and median at:

brainly.com/question/14532771

#SPJ1

5 0
2 years ago
Angela took 56 minutes to take her history test brian took 70% of the time that it took angela to complete the test . How long d
zheka24 [161]

Answer: 39.2 minutes

Step-by-step explanation:

Angela used 56minutes. Brain used 70% of Angela's time which will be 70% of 56.

70/100 × 56 = 39.2 minutes.

Therefore, Brian used 39.2 minutes for the test.

6 0
3 years ago
Read 2 more answers
Simplify to create an equivalent expression. 2(3r+7)−(2+r)
tamaranim1 [39]

2(3r+7)−(2+r)

Use distributive property:

6r + 14 - 2 - r

Simplify by combining like terms:

5r +12

7 0
3 years ago
A sequence is represented by the formula an=-5+a(n-1). If a4 = 20, what is the 6th term in the sequence?
Citrus2011 [14]

Answer:

<u>10</u>

Step-by-step explanation:

Formula :

  • aₙ = -5 + aₙ₋₁

Finding a₅ :

  • a₅ = -5 + a₄
  • a₅ = -5 + 20
  • a₅ = 15

Finding a₆ :

  • a₆ = -5 + a₅
  • a₆ = -5 + 15
  • a₆ = <u>10</u>
4 0
1 year ago
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