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crimeas [40]
3 years ago
8

In a study of cell phone use and brain hemispheric​ dominance, an Internet survey was​ e-mailed to 2533 subjects randomly select

ed from an online group involved with ears. 1133 surveys were returned. Construct a 90​% confidence interval for the proportion of returned surveys.
Mathematics
1 answer:
Vika [28.1K]3 years ago
4 0

Answer:

dhnstnfwbeusgafbtwwfbywfntwfbtw

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Please help!!!!!!!! ​
xxMikexx [17]

Answer:

1) 0.50

2) 1

using probability formula

6 0
2 years ago
Plantea una ecuacion
Anna35 [415]

Answer:78phy

gigh[ood9..8d55.5.5.5.5.5.5.5.6.s7s47.4

Step-by-step explanation:

8 0
3 years ago
$7.50 per ticket. the theater earned $450 from ticket sales tuesday's performance. which equation can be used to find the number
Norma-Jean [14]

Answer:

450 ÷ 7.50 = t (tickets sold for Tuesday)

Step-by-step explanation:

this is simple 4th grade division...

4 0
3 years ago
What combination of transformations is shown below?
Anastasy [175]

Answer:

Rotation then reflection

Step-by-step explanation:

The triangle starts where the light green one is. Then it is rotated 90 degrees clockwise around the point where the hypotenuse and longer leg meet. From the sark green triangle it is reflectd to where the purple triangle is.

8 0
3 years ago
Keisha swims 18 ft from one side of her circular pool to the other, swimming straight through the center. She then swims one tim
elena-s [515]

Answer:

Swimming one time around the pool is 56.5 ft

Step-by-step explanation:

Swimming 18 ft from one side of her circular pool to the other, swimming straight through the center means the circular swimming pool has a diameter of d=18 ft.

The circumference of the circle is calculated using:

c = \pi \: d

where d=18 is the diameter and π=3.14 as given.

We substitute the values to get:

c = 3.14 \times 18

c = 56.52

We approximate to the nearest tenth to get:

c = 56.5ft

6 0
3 years ago
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