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dmitriy555 [2]
3 years ago
12

Helppppppppppppppppppppppppppp

Mathematics
1 answer:
Paul [167]3 years ago
6 0

Answer:

20, and 26 are the middle - 23 is the average. Your answer is 23.

Step-by-step explanation:

So since they are in order from least to greatest, basically it's the middle one.

Since there is an even number and there isn't a middle one (like it is here) then, it is the average of the middle two.


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Last Wednesday, a random sample of 24 students were surveyed to find how long it takes to walk from the Fretwell Building to the
Ray Of Light [21]

Answer:

E

Step-by-step explanation:

Solution:-

- We are to investigate the confidence interval of 95% for the population mean of walking times from Fretwell Building to the college of education building.

- The survey team took a sample of size n = 24 students and obtained the following results:

                Sample mean ( x^ ) = 12.3 mins

                Sample standard deviation ( s ) = 3.2 mins

- The sample taken was random and independent. We can assume normality of the sample.

- First we compute the critical value for the statistics.

- The z-distribution is a function of two inputs as follows:

  • Significance Level  ( α / 2 ) = ( 1 - CI ) / 2 = 0.05/2 = 0.025

Compute: z-critical = z_0.025 = +/- 1.96

- The confidence interval for the population mean ( u ) of  walking times is given below:

                      [ x^ - z-critical*s / √n  ,   x^ + z-critical*s / √n  ]

Answer:        [ 12.3 - 1.96*3.2 / √24  ,  12.3 + 1.96*3.2 / √24  ]

                   

3 0
3 years ago
Mr. Standford’s greenhouse has the dimensions shown. The volume of the greenhouse is 90 cubic yards. Find the missing dimension
salantis [7]

Hey read the image I have attached. Ignore what I am typing here I need to type 20 characters.

3 0
3 years ago
A container in the shape of a rectangular prism has a base that measures 20 cm by 30 cm and has a height of 15 centimeters. The
lara [203]
Notice the picture below

the added water, will also be a rectangular prism, with a height of 2.5cm

4 0
3 years ago
What is the equation of the directrix of the parabola given by the equation y2 = -24x?
erma4kov [3.2K]

The equation of the directrix of the parabola given is x = 6, Option D is the correct answer.

<h3>What is Directrix of a Parabola ?</h3>

A parabola is a U shaped curve whose all point are at same distnace from a  point called as focus and a line called as Directrix .

The equation of the parabola given is

y² = -24x

When the standard equation of parabola is

 (y - k)² = 4p (x - h),

where the focus is (h + p, k) and the directrix is x = h - p.

here h = 0

p = -24/4 = -6

x =  0 - (-6)

x = 6

Therefore Option D is the correct answer.

To know more about Directrix

brainly.com/question/17376399

#SPJ1

4 0
2 years ago
The hot air balloon is at 175ft and the fish is swimming at -10 feet what is the difference between them?
pashok25 [27]
The answer is 165 ft because 175- -10= 165
8 0
3 years ago
Read 2 more answers
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