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andreyandreev [35.5K]
2 years ago
14

Suppose that the batting average for all major league baseball players after each team completes 100 games through the season is

0.250 and the standard deviation is 0.35. We want to test the statement that the American League batting average exceeds that of all other major league players. A sample of 49 players taken from the American League reveals a mean batting average of 0.265. Conduct the test at the 5% level of significance by:
Mathematics
1 answer:
zlopas [31]2 years ago
3 0

The answer is 0.3.

Tes statistic, z = (X-bar - μ)/σ/√n

Given that X-bar = 0.265, μ = 0.250, σ = 0.35, n = 49

Therefore, z = (0.265 - 0.250)/0.35/√49 = 0.3

What is statistic?

  • The study of data gathering, analysis, interpretation, presentation, and organization is known as statistics. In other words, gathering and summarizing data is a mathematical discipline.
  • Additionally, statistics might be considered a subfield of applied mathematics. However, uncertainty and variation are two crucial and fundamental concepts in statistics.
  • Only statistical analysis can determine the uncertainty and variation in many sectors. The probability, which is a key concept in statistics, essentially determines these uncertainties.

To learn more about statistics visit:

brainly.com/question/23091366?

#SPJ4

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Which of these triangle pairs can be mapped to each other using a single translation?
sergeinik [125]

Answer:- D shows the triangle pairs which can be mapped to each other using a single translation.


Explanation:-

Translation is a rigid transformation which creates a congruent image as that of the original figure such that the distance between the each point of the original figure and the image is fixed and same.

The translation mapping is given by (x,y)→(x+h,y+k) ,where h is the distance of the x coordinate of the each point of the original figure to the image and  k is the distance of the y coordinate of the each point of the original figure to the image.

In figure D we can see that the distance between each point of ΔCED is equal to the distance between each point of ΔMPN. Thus it shows  the triangle pairs which can be mapped to each other using a single translation.


4 0
4 years ago
Read 2 more answers
THE TOPIC IS: AREA OF CIRCLES!! PLEASE HELP ME WITH THIS QUESTION!!! WHATS THE ANSWER?? I WILL GIVE YOU BRAINLIEST AND A THANKS!
emmainna [20.7K]

9514 1404 393

Answer:

  49π m² ≈ 154 m²

Step-by-step explanation:

The formula for the area of a circle is usually remembered as ...

  A = πr² . . . . . for radius r

Here, we're given the diameter. We can either figure the radius from the diameter and use this formula, or we can rewrite the formula to use the diameter.

  r = d/2 = (14 m)/2 = 7 m

  A = π(7 m)² = 49π m² . . . . . "exact" answer

Sometimes when multiples of 7 are involved, we like to use π ≈ 22/7. Using that value, the area is ...

  A = 49π m² = 49(22/7) m² = 154 m² . . . . . approximation using π = 22/7

Often, algebra problems insist on using the value π = 3.14. For that value, the area is ...

  A = 49π m² = 49(3.14) m² = 153.86 m² . . . . . approximation using π = 3.14

Using the "pi button" on your calculator, the numeric answer is ...

  A ≈ 49(3.14159265359) m² ≈ 153.938 m² . . . . using "pi button"

_____

If we rewrite the formula to use the diameter directly, then the area is ...

  A = π(d/2)² = (π/4)d²

For the diameter of 14 m, this is ...

  A = (π/4)(14 m²) = π(196/4) m² = 49π m² . . . . same as above

5 0
3 years ago
Write a story that matches the expression -7h - 10
OLEGan [10]
Wants to find how much money he will spend for a number of ride tickets, h, he purchases
he gets into an amusement park by paying a fee of 10 dollars
each ride is 7 dollars

so his looss is -7h-10
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4 years ago
Can you help me what is 8242/68
Lina20 [59]

Answer:

121.205882353

Step-by-step explanation:

Put it in a calculator

4 0
4 years ago
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Ralph has a piece of shelving 3 m long. He is going to cut it into 4 equal lengths pieces. how long will each piece be?
marishachu [46]

0.75 or 3/4 m each.

Extra letters: cdvaysoHAHboaihscvia


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