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zimovet [89]
3 years ago
6

A random sample of 15 dvd players has a mean price of $64.30 and a standard deviation of $5.60. find a 95% confidence interval f

or the mean price of all dvd players.
Mathematics
1 answer:
makkiz [27]3 years ago
8 0
No i do not kmnow the anweserrgfgghtg
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What's the equation of the parabola that has its vertex at (4,–1) and a y-intercept at (0,7)?
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Answer:

C

because it is given that the vertex is (4, - 1) an an equation C it is clearly seen that the vertex is same.

8 0
3 years ago
I need help...I don't understand
Andrej [43]
Keep change change [keep the first integer change the opperation and change the integer on your number or fraction ... Rember the answer takes the sign of the larger number .
3 0
3 years ago
If the speed limit on a highway is 70 miles per hour, about how fast is this in miles per minute?
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5 0
3 years ago
There are 20 parrots at the animal sanctuary. Their population is increasing at a rate of 15% per year. There are also 24 snakes
worty [1.4K]
For the answer to the questions above,
A) Parrots are following a Geometric Progression of 15% increase.

20(1.15),  20(1.15)², 20(1.15)³,

Function  = 20(1.15)^n      Where n is at the end of year, n =1, 2, 3, ..

Snakes are increasing by 4.

28, 32, 36,....

Function =  24 + 4n          n = number of end year,      n =1, 2, 3,...

<span>B) After 10 years:              </span>
Parrot =  20(1.15)¹⁰    = 80.91115471

Snakes =  24 + 4(10) = 64

<span>C) After what time they are the same: </span>
We use trial and error:


Test:  n                             20(1.15^n)                        (24 + 4n)
          1                                    23                                   28
          2                                    26.45                              32
<span>          3                                    30.41                             36    </span>
          4                                    34.98                              40
          5                                    40.23                              44
          6                                    46.26                              48
          7                                    53.20                              52
          8                                    61.18                              56
          9                                    70.36                              60

After year 7, the Parrots increases far more.
<span>At year 7 they are roughly the same.</span>
8 0
3 years ago
LITTLE HELP HERE PEOPLE BTW IF UR RIGHT BRAINLIST IT IS........
Westkost [7]

The  formula for the total surface area of a right prism is T. S. A. =ph+2B where p represents the perimeter of the base, h the height of the prism and B the area of the base, I hope this helps.

God bless :)

4 0
3 years ago
Read 2 more answers
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