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GuDViN [60]
4 years ago
10

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. If a sample

of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. What is the margin of error of the sample mean?
Mathematics
1 answer:
dem82 [27]4 years ago
7 0

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. If a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. The margin of error of the sample mean is 83.71%.

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HELP DUE IN 10 MINS! <br><br> The lighthouse is ?? feet above the water.
jasenka [17]

Answer:

<u>Use tangent:</u>

  • BL/BS = tan S
  • x / 144 = tan 25°
  • x = 144 tan 25°
  • x = 67 ft (rounded)

3 0
3 years ago
What is the answer to this math problem 40+40x0+1=
Anna71 [15]
PEMDAS is 
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therefore, you would do 40*0=0+40+1=41 
5 0
3 years ago
Maria Martinez and her sister, Christina, are planning to operate a small day care center in a remodeled building. They've obtai
Arte-miy333 [17]
If these were the given choices:
A. Corporation 
<span>B. General partnership </span>
<span>C. Limited partnership </span>
<span>D. Sole proprietorship 
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The correct answer is C. LIMITED PARTNERSHIP.

Limited partnership is defined as a partnership consisting of a general partner and a limited partner. In the above scenario, Maria will be the general partner while Christina is the limited partner. 

Maria, as the general partner, will be the one who manages the business and has the unlimited liability for the debts and obligations of the business.

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7 0
3 years ago
Read 2 more answers
Help pls
babymother [125]

Answer:

1). x = 10 m

2). x = 15 cm

3). x = 5 yd

4). AB = 10 units

Step-by-step explanation:

1). By Pythagoras theorem in the given triangle,

 a² + b² = c²

 Where 'c' = Hypotenuse

 a and b = Legs of the right triangle

 By substituting measures of the sides in the formula,

 x² = 8² + 6²

 x = \sqrt{100}

 x = 10 m

2). By using Pythagoras theorem in this triangle,

  x² = 9² + (12)²

  x² = 81 + 144

  x = \sqrt{225}

  x = 15 cm

3). By Pythagoras theorem,

  (13)² = x² + (12)²  

  169 = x² + 144

  169 - 144 = x²

  25 = x²

  x = 5 yd

4). If BD is a perpendicular bisector of AC,

  AD = CD = 6 cm

  By Pythagoras theorem in ΔABD,

  AB² = BD² + AD²

  AB² = 8² + 6²

  AB = \sqrt{100}

  AB = 10 units

4 0
3 years ago
Read 2 more answers
Write the equation of the line, in slope intercept form, through the following points:
lakkis [162]

Hey!

------------------------------------------------

First, find the slope.

y2-y1/x2-x1

-20-(-5)/21-16

-15/5

-3

------------------------------------------------

Second, find the y-intercept.

We can solve for b with one of the points.

Put into slope-intercept form,

y = -3x + b

Substitute x and y with (16, -5)

-5 = -3(16) + b

-5 = -48 + b

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43 = b

------------------------------------------------

Third, put in slope-intercept form.

y = mx + b

m = slope

b = y-intercept

y = -3x + 43

------------------------------------------------

Hope This Helped! Good Luck!

8 0
3 years ago
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