Complete Question
An F5 tornado is classified as having mean wind speeds greater than 261 mph. In an effort to classify a recent tornado, 20 wind speed measurements were randomly selected from within the path of the tornado. Suppose the mean wind speed for this tornado really is greater than 261 mph with a sample standard Deviation 41.09 mph. Based on the data, if we fined little to no evidence against the null hypothesis that the mean wind speed is 261 mph, we have made _______________.
Answer:
Step-by-step explanation:
From the question we are told that:
Sample size 
Population mean 
Sample mean 
Sample standard deviation 
Generally the equation t test statistics is mathematically given by
Therefore
Pvalue from table is
X^(3•2) =X^ 6
Think of an example such as :
(2^3)^2=8^2=64 is the same with
2^(3•2) = 2^6 = 64
Answer:
a) 2.5 km
b) 1836 m ≈ 1.8 km (rounded)
Step-by-step explanation:
a) just add the two distances of the vertical and horizontal road. 900m + 1600m = 2500m = 2.5 km
b) Apply Pythagoras (a²+b²=c², where a and b are the vertical and horizontal roads, and c is the diagonal road).
c = √(1600²+900²) ≈ 1836m (rounded)
Answer: 19.5 gallons
Step-by-step explanation:
Hi, to answer this question, we have to use proportions:
Nathaniel buys 28 gallons of gas for $56, so the proportion is:
$56 / 28 gallons.
For $39:
$39 / x gallons
Solving for x (number of gallons)
56/28 = 39/x
x = 39 / (56/28)
x = 19.5 gallons
Feel free to ask for more if needed or if you did not understand something.
