I need help someone PLZZZ HELP ME
1 answer:
You might be interested in
Well, 12 issues end up as 960 pages total
so... if in 960 pages, 384 are ads, what about 80 pages?
well
solve for "x"
so... if in 960 pages, 384 are ads, what about 80 pages?
well
solve for "x"
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