Answer:
72
Step-by-step explanation:
because if you add 18, 4 times or 18 x 4 it will give your 72
hope this helps
Answer:
We accept H₀. We do not have argument to keep the claim that the mean breaking strength has increased
Step-by-step explanation:
Normal Distribution
Population Mean μ₀ = 1850 pounds
Standard Deviation σ = 90 pounds
Type of test
Null Hypothesis H₀ ⇒ μ = μ₀
Alternative Hypothesis Hₐ ⇒ μ > μ₀
A one tail test (right)
n = 21 as n < 30 we use t-student table
degree of fredom 20
t = 2.845
Sample mean μ = 1893
Then, we compute t statistics
t(s) = [ 1893 - 1850 ] / 90/ √n
t(s) = 43 * 4,583 / 90
t(s) = 197,069 / 90
t(s) = 2,190
And we compare t and t(s)
t(s) = 2.190
t = 2.845
Then t(s) < t
We are in the acceptance zone, we accept H₀
Answer: a
Step-by-step explanation:
Answer:
Therefore the distance of 4224 feet when converted to miles is 0.8 miles.
Step-by-step explanation:
i) 1 mile = 5280 feet
ii) the distance to be converted to miles = 4224 feet
iii) the distance in miles = 
Therefore the distance is 0.8 miles.
