Answer:
3.35
Step-by-step explanation:
look at the picture
Answer:
x= 38/5
Step-by-step explanation:
Answer: (103.74,112.06)
Step-by-step explanation:
The confidence interval for population mean is given by :_

Given : Sample size : n= 50
Sample mean : 
Standard deviation : 
Significance level : 
Critical value : 
Then the 95% confidence interval for the student IQ in the school will be :-

Hence, the 95% confidence interval for the student IQ in the school= (103.74,112.06)
Answer:
6
Step-by-step explanation:
Answer:
201.06 square feet.
Step-by-step explanation:
=> The diameter of a circle is equal twice its radius. So we divide the diameter by 2 to get its radius.
=> The area of any given circle is π times the square of the radius. The radius of this circle is equal to 8 feet.
=> Area of the circle = π × r² = 3.1415 × 8 feet = 201.056 square feet