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GrogVix [38]
2 years ago
9

A television sports commentator wants to estimate the proportion of Americans who follow professional football. What sample size

should be obtained if he wants to be within 3 percentage points with 95% confidence if
(a) he uses a 2010 estimate of 53% obtained from a Harris poll?
(b) he does not use any prior estimates?
(c) Why are the results from parts (a) and (b) so close?
Mathematics
1 answer:
Lesechka [4]2 years ago
8 0

Answer:

A.1,063

B.1.067

C.Since 0.2491 is close 0.25 this means that the results from parts (a) and (b) are close.

Step-by-step explanation:

A. If he uses a 2010 estimate of 53% obtained from a Harris poll

Since E is 0.03

The next stel is to find Z using this formula

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Help please!!!!!!!!!!!!!
KatRina [158]
Hello!

For this you can plug in the x values in the choices and see if you get the y value

y = -4^{3}  - (-4)

-4^3 is -64

when you subtract a negative you are just adding

-64 + 4 = 60

Then you do the second one

y =  -3^{3}  - (-3)

-3^3 is -27

-27 + 3 is -24

Then the third one

y =  -2^{3}  - (-2)

-2^3 is -8

-8 + 2 is -6

Then the last one

y =  -1^{3}  - (-1)

-1^3 is -1

-1 + 1 = 0

Since we did not get -2 the answer is D

Hope this Helps!
7 0
3 years ago
Please answer this quickly!
kari74 [83]
54/1,000

just do Length x Width x Height 
7 0
3 years ago
6 1/2 how many inches ​
sveticcg [70]

Answer:

78 inches

Step-by-step explanation:

12 TIMES 6 = 72

72+6=78

6 0
3 years ago
The new athletic facility on the downtown campus measures 0.74 km by 4 km. How many square
masha68 [24]

Answer:

The sports facility is 2,960,000 sq. m   in area.

Step-by-step explanation:

The dimension of the sport facility = 0.74 km by 4 km

The Length of the facility = 4 km

The width of the facility = 0.74 km

Now, 1 km = 1000 meters

⇒ 4 km = 4 x (1000) = 4000 meters

and 0.74 km = 0.74 x (1000) = 740 meters

Now, AREA OF THE RECTANGLE = LENGTH x WIDTH

So, the area of the facility = 4000 m  x 740 km

                                         =  2,960,000 sq. m

Hence, the sports facility is 2,960,000 sq. m  in area.

7 0
2 years ago
:) Find the surface area and volume of the cylinder below:
bonufazy [111]

Answer: 1727.9

Step-by-step explanation:

Volume = πr2h

= π×52×22

= 550π

= 1727.8759594744 feet3

3 0
3 years ago
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