Answer:
The required interval is (26.23 , 27.37)
Step-by-step explanation:
The mean is = 26.8
The standard deviation is = 7.42
n = 654
At 95% confidence interval, the z score is 1.96
To find the desired interval we will calculate as:

And 
and 
= 27.37 and 26.23
So, the required interval is (26.23 , 27.37)
Answer:
6
Step-by-step explanation:
=>root(2) x root(3) x root(6)
=>root(2x3) x root(6)
=>root(6) x root(6)
=>6
Answer:
125
Step-by-step explanation:
25/100×500
25×5
125
Hope this helps you
Answer:
24 pounds
Step-by-step explanation:
let Andy's bike be x pounds then Barry's bike is x + 6 ( 6 pounds more )
The total weight of their bikes is 42, hence
x + x + 6 = 42
2x + 6 = 42 ( subtract 6 from both sides of the equation )
2x = 36 ( divide both sides by 2 )
x = 18
Hence Barry's bike weighs x + 6 = 18 + 6 = 24
20 ounces overall ;))))) hope this helped aye