Mathematics, 30.04.2021 01:00 amir6658
In the US, 77% of all teens have a TV in their bedrooms, while 59% of all teens in Spain have them. A simple
random sample of 500 teens from the US and 300 from Spain are selected and all are asked whether they have a
TV in their bedrooms. Let 9, -be the difference in the sample proportions of teens with a TV in their bedrooms,
where
is the sample proportion of US teens with a TV in their bedrooms and is the sample proportion of
Spanish teens with a TV in their bedrooms.
What is the shape of the sampling distribution of the difference in the two sample proportions?
approximately uniform
approximately Normal
skewed to the right
skewed to the left
Answers: 1
Mathematics, 21.06.2019 20:30
What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)
Answers: 2
Mathematics, 22.06.2019 03:00
Crickets can jump with a vertical velocity of up to 14 ft/s. which equation models the height of such a jump, in feet, after t seconds? h(t) = β16t2 + v0t + h0 h(t) = β16t2 + v0t + 14 h(t) = β16t2 + 14t h(t) = β16t2 + 14t + 14 what is the maximum height the cricket reaches? round to the nearest thousandth. h = feet
Answers: 1
Mathematics, 22.06.2019 04:00
If julia has a value of x5.4 that is equivalent to x10.9 true or false. explain
Answers: 3
Mathematics, 22.06.2019 06:10
Which best describe the graph of the function f(x) = 4(1.5)x
Answers: 1
In the US, 77% of all teens have a TV in their bedrooms, while 59% of all teens in Spain have them....
Mathematics, 24.09.2019 21:30
Business, 24.09.2019 21:30
Social Studies, 24.09.2019 21:30