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vovikov84 [41]
3 years ago
7

A baseball coach divided his team randomly into two groups. one group practiced with regular bats, while the other group practic

ed with weighted bats. the group using weighted bats hit the ball an average of 2.3 meters farther than the group using regular bats.
study type:
population:
control group:
treatment group:
is 2.3 m farther a parameter or a statistic?

PLEASE HELP!!
Mathematics
1 answer:
Evgen [1.6K]3 years ago
3 0
2.3 is a parameter because it gives you an exactly amount statistic is like an estimate
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Y is this so hard? :/ i dont know, but its a test, pls get it right
kozerog [31]

Answer:

test? :/

Step-by-step explanation:

6 0
3 years ago
In order to clear out room for new merchandise, James decided to mark down some of the items for sale in his electronics store.
masya89 [10]

The correct answer is A, as the DVD player's price was reduced by $ 3.82 more than the stereo tuner's price.

In order to clear out room for new merchandise, James decided to mark down some of the items for sale in his electronics store, and he marked down DVD players by 36%, and he marked down stereo tuners by 22%, if DVD Players cost $ 41.60 after the markdown and stereo tuners cost $ 69.42 after the markdown.

To determine which item's price was reduced by more, and by how many dollars more was it reduced, the following calculation must be performed:

  • 100 - 36 = 64
  • 64 = 41.60
  • 100 = X
  • 100 x 41.60 / 64 = X
  • 4160/64 = X
  • 65 = X
  • 65 - 41.60 = 23.40

  • 100 - 22 = 78
  • 78 = 69.42
  • 100 = X
  • 69.42 x 100/78 = X
  • 6942/78 = X
  • 89 = X
  • 89 - 69.42 = 19.58

Therefore, the DVD player's price was reduced by $ 3.82 more than the stereo tuner's price.

Learn more about maths in brainly.com/question/18629331

4 0
2 years ago
A basketball is shot into a 10ft. Goal from a height of 6.5 feet. The function h= -0.875t2 + 3.5t + 6.5 represents the path of t
Galina-37 [17]

Answer: how do I graph this

Step-by-step explanation:

3 0
3 years ago
The height, h, in feet of a rock above the ground is given by the equation h = -16t^2 + 24t + 16, where t is the time in seconds
boyakko [2]

The rock will hit the ground at 2 seconds.

Explanation:

Given that the height, h, in feet of a rock above the ground is given by the equation h=-16t^2+24t+16, where t is the time in seconds after the rock is thrown.

We need to determine the time at which the rock will hit the ground.

To determine the time, let us equate the height h = 0 in the equation h=-16t^2+24t+16, we get,

0=-16t^2+24t+16

Switch sides, we have,

-16 t^{2}+24 t+16=0

Let us solve the equation using the quadratic formula.

Thus, we have,

t=\frac{-24 \pm \sqrt{24^{2}-4(-16) 16}}{2(-16)}

Simplifying, we get,

t=\frac{-24 \pm \sqrt{576+1024}}{-32}

t=\frac{-24 \pm \sqrt{1600}}{-32}

t=\frac{-24 \pm 40}{-32}

Hence, the two values of t are

t=\frac{-24 + 40}{-32}   and   t=\frac{-24 -40}{-32}

Simplifying the values, we get,

t=\frac{16}{-32}  and  t=\frac{-64}{-32}

Dividing, we get,

t=-\frac{1}{2}  and  t=2

Since, t cannot negative values, we have,

t=2

Thus, the rock will hit the ground at 2 seconds.

8 0
3 years ago
What term can be used to describe this graph? A. negative exponential growth B. negative linear growth C. positive linear growth
Vladimir79 [104]
D ~ Positive Exponetial growth. Hope it helped!!! <3 (^u^)
6 0
2 years ago
Read 2 more answers
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