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emmainna [20.7K]
3 years ago
6

the researcher wants to estimate the number of hours that 5 year old children spend watching television. a sample of 50 five yea

r old children was observed to have a mean viewing time of 3 hours. the population is normally distributed with a population standard deviation 0.5,find the best point of the population mean and the 95& confidence interval of the population mean​
Mathematics
1 answer:
Mazyrski [523]3 years ago
5 0

Answer:

thth

Step-by-step explanation:

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How many change did she get back
ycow [4]
We Need To Multiply 1.20 By 3 Scoops. 
1.20 * 3 = 3.60
Now, We Need To Subtract 3.60 From 5.
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So, Jessi Got 1.40 Dollars Back.
8 0
3 years ago
Read 2 more answers
Free 30 points first to answer gets it.<br> 2+2-5x9=
Dmitry [639]
-5x9=-45 2+2=4
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8 0
3 years ago
Can someone help with this step by step ty!
Alik [6]

Answer:

Area = 88 units squared

Perimeter = 40 units

Step-by-step explanation:

The formula for the Area of the parallelogram is base (11) times height (8)

The perimeter is just adding all the outsides together (11 + 11 + 9 + 9)

7 0
3 years ago
Someone please help me
yuradex [85]

Answer:

112in²

Step-by-step explanation:

Formulas: V = \frac{lwh}{3}, V = lwh

Sub: v = \frac{4 x 4 x 6}{3}

Solve: 32

Sub: v = 4 x 4 x 5

Solve: 80

V = 80 + 32

V = 112

<u>The total volume of the figure is 112in²</u>

3 0
3 years ago
Is the answer B or C
klio [65]

We will calculate it like this, We will make a right angle triangle by adding one new point called O for example, and O is located right under the point C, and on the right side of point D, so the coordinated for this point are O (8, -2). From there, length CD is calculated using the Pythagorean theorem, because we know that the CO = 4 and DO = 4, so:

CD^2 = CO^2 + DO^2

CD^2 = 4^2 + 4^2

DC^2 = 16 + 16

DC^2 = 32

DC = square root of 32 = square root of 16 * square root of 2

DC = 4 * square root of 2

The correct answer is B. 4*square root of 2.

6 0
3 years ago
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