A single die is rolled, find the probability that the number is even or less than 6
1 answer:
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Answer:
There is sufficient statistical evidence to suggest that the US presidents are taller than the average American male
Step-by-step explanation:
The given parameters are;
The mean height of American Males, μ = 69.5 inches
The mean height of 43 male presidents, = 70.78
The standard deviation, s = 2.77 inches
The number of male presidents = 43
The null hypothesis; H₀ μ =
The alternative hypothesis; Hₐ μ ≠
The significance level, α = 0.05
The t test for the sample with unknown population standard deviation is given as follows;
Therefore, we have;
The degrees of freedom, df = n - 1 = 43 - 1 = 42
The critical 't' value = 2.0181
Therefore, given that the t test value is larger than the critical-t, we reject the null hypothesis, therefore, there is sufficient statistical evidence to suggest that the US presidents are taller than the average American male
Answer:
Step-by-step explanation:
Given:
radius of cone = 3 inch
Total area of cone =
Find the volume of the cone?
We know the area of cone = -------(1)
Where r = radius
Ans s = side of the cone
Put the area value in equation 1
-------(1)
Put r value in above equation.
The side s = 5 inches
We know the side of the cone formula
Put r and s value in above equation.
The volume of cone is
Put r and h value in above equation.
The Volume of the cone is