Answer:
a) 0.23
b) The 95% confidence interval for the population proportion is (0.1717, 0.2883).
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of 
, and a confidence level of 
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of 
.
Point estimate
The point estimate is:
95% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
The lower limit of this interval is:
The upper limit of this interval is:
The 95% confidence interval for the population proportion is (0.1717, 0.2883).
Answer:
$7.50 + (3.50/p) or 3.50/p
Step-by-step explanation:
let p represent how many people there are. you wish divide the drinks by each person, then add the cost of the game. (but i don’t know about adding the cost of the game because it never said if they played the game or not.
sorry if i got it wrong! :)
A = 0.75
To figure out how much each banana was, subtract the cost of the apple.
4.35 - 0.75 = 3.60.
Divide 360 by 8.
3.60/8 = .45
Each banana costed $0.45
I hope this helps!
Answer:
0.53πrad
Explanations:
Given the radius of the circular track = 60metres
If she walks a total of 100 meters, the length of the arc of the circle = 100metres
To calculate the radian angle she rotates about the center of the track, we will use the formula for calculating the length of an arc
L = θ/360° × 2πr
100 = θ/360× 2π(60)
36000 = 120π × θ
36000 = 376.8θ
θ = 36000/376.8
θ = 95.5°
Since 180° = πrad
95.5° = x
x = 95.5π/180
x = 0.53π rad
