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?

Answers

Answer 1

Answer:

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%.

Answer 2

Answer:

Answer:

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Step-by-step explanation:

Plato

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How to determine the acute angle between the line 2x+3y=6 and the y axis?

Circumference of the circle is 2.54 what's the area

Answers

A= π r^2, and we don't know r, so we'll have to use r = √C/π.

√C is and infinite number, and the square root of
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What is the result of dividing 48a3 + 32a2 + 16a by 4a?

A. 12a2 + 8a + 4

B. 12a2 + 4a + 8

C. 12a + 8

D. 12a2 + 4a + 4

Answers

The required quotient is 12a2 + 8a + 4. Option A is correct.

Quotient to be determined when dividing 48a3 + 32a2 + 16a by 4a.

What is the quotient?

The quotient is that value when quantity is divided by some value.

Here,
= (48a3 + 32a2 + 16a)/4a.
= 48a3/4a + 32a2/ 4a + 16a/4a)
= 12a2 + 8a + 16

Thus, the required quotient is 12a2 + 8a + 4. When dividing 48a3 + 32a2 + 16a by 4a.

Learn more about quotient here:
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$(48a^3+32a^2+16a)/(4a)$
$(48^3)/(4a) + (32a^2)/(4a) + (16a)/(4a)$

12a² + 8a + 4

Answer is A. 12a² + 8a + 4

If R, S, and T are collinear and RS + ST = RT, which of the following is true? A. T is between R and S.B. RS=RT
C. S is the midpoint of.
D. S is between R and T.

Answers

The answer is D. S is between R and T.

Imagine a line, which a starting point is R and a final point is T. And somewhere in between a point S.
The total distance is RT (from the starting to the final point).
The distance RS is one part of the line, and the distance ST is the other part of the line. If these two distances sum up, you will get the total distance:
RS + ST = RT

I put $200 in a saving account with 7% interest a year. How much will i have in 19 years

Answers

it would be 200×0.07= 14×19= 266

I = PRT
P for Principle Amount
R for Rare
T for Time in years

I = 200 × 0.07 × 19 (70% = $(7)/(100)$ = 0.07)
= $266 - this is the interest

You will have 200 + 266 = $466 in your account

What is the quotient in simplified form? State any restrictions on the variable.

Answers

$( x^(2) -16)/( x^(2) +5x+6): (x)/(y) ( x^(2) +5x+4)/( x^(2) -2x-8)= \n = ((x+4)(x-4))/((x+2)(x+3))* ((x-4)(x+2))/((x+4)(x+1))=$
= ( x - 4 )² / ( x + 3 ) ( x + 1 ), restrictions: x ≠ - 3, x ≠ - 1;
Answer: A )

What is 90 out of 95 written as a fraction?

Answers

$90\ out\ of\ 95 = (90)/(95)\ which\ simplifies\ to\ (18)/(19)$

90/95 or it can also be written as 90 over 95

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