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in each part use the information given to calculate the standard error of the mean.
a) mean height for a sample of n = 71 women is x = 62.4 inches and the standard deviation is s = 2.6 inches.
b) mean systolic blood pressure for a sample of n = 90 men is x = 122.5, and the standard deviation is s = 7.
c) mean systolic blood pressure for a sample of n = 348 men is x = 122.5, and the standard deviation is s = 7.
a) mean height for a sample of n = 71 women is x = 62.4 inches and the standard deviation is s = 2.6 inches.
b) mean systolic blood pressure for a sample of n = 90 men is x = 122.5, and the standard deviation is s = 7.
c) mean systolic blood pressure for a sample of n = 348 men is x = 122.5, and the standard deviation is s = 7.
find the value of t for the following situation
df = 25, 99% confidence level
df = 25, 99% confidence level
sonja bought a new van for her business. the cost of the van was $35,000 and she had to pay 6% sales tax. what was the total cost of the van, including tax?
1. Find the values of the following derivatives. Use Use f^' (x)=lim┬(h→0)〖(f(x+h)-f(x))/h〗
a) ├ ds/dt┤| 〖┬(t=-1)〗 if s=1-3t²
b) ├ dy/dx┤| 〖┬(x=√3)〗〖 〗 if y= -1/x
c) ├ dr/dθ┤| 〖┬(θ=0)〗 if r= 2/√(4-θ)
d) ├ dw/dz┤| 〖┬(z=4)〗〖if w=z+√z〗
a) ├ ds/dt┤| 〖┬(t=-1)〗 if s=1-3t²
b) ├ dy/dx┤| 〖┬(x=√3)〗〖 〗 if y= -1/x
c) ├ dr/dθ┤| 〖┬(θ=0)〗 if r= 2/√(4-θ)
d) ├ dw/dz┤| 〖┬(z=4)〗〖if w=z+√z〗
Find the length of an arc of the curve given
by x = a(theta — sin theta), y = a(1— cos theta), and obtain
the ratio in which theta = π/3 divides it.
by x = a(theta — sin theta), y = a(1— cos theta), and obtain
the ratio in which theta = π/3 divides it.
What is the 9th term in the sequence below??
f(1)=62, f(n) = f(n-1) - 3
Please help.
f(1)=62, f(n) = f(n-1) - 3
Please help.
Frank and Marie set sail from the same point. Frank is sailing in the direction S7∘E. Marie is sailing in the direction S13∘W. After 5 hours, Marie was 16 miles due west of Frank. How far had Marie sailed?
Round your answer to four decimal places.
Round your answer to four decimal places.
About 1/5 of all adults in the United States have type O+ blood. If three randomly selected adults donate blood, find the probability of each of the following events . (round your answer to four decimal points)
A) All three are type O+
B) None of them are type O+
C) Two out of three are type O+
A) All three are type O+
B) None of them are type O+
C) Two out of three are type O+
Suppose that a survey reported that 46% of respondents favored gun control, a margin of error of 3 percentage points.
what was the approximate size of the sample, n? (round answer to the nearest whole number)
what was the approximate size of the sample, n? (round answer to the nearest whole number)
Obtain a solution of the wave equation
∂^2u(x,t)/∂t^2=16(∂^2u(x,t)/∂x^2)
for 0≤ x ≤ π and t > ,0 and the following boundary and initial conditions:
u(0,t)=u(π,t)=0,
u(x,0)=x(π-x) and ∂u(x,0)/∂t=0
∂^2u(x,t)/∂t^2=16(∂^2u(x,t)/∂x^2)
for 0≤ x ≤ π and t > ,0 and the following boundary and initial conditions:
u(0,t)=u(π,t)=0,
u(x,0)=x(π-x) and ∂u(x,0)/∂t=0
