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lutik1710 [3]
3 years ago
7

Use the confidence level and Sample data to find the margin of error E. Round your answer to the same number of decimal places a

s the sample mean unless otherwise noted.
Soulistic blood pressures for women aged 18-24: 94% confidence, n=92, x= 112.1 mm Hg, standard deviation=13.5 mm Hg
A)2.6 mm Hg
B)2.3 mm Hg
C)47.1 mm Hg
D)2.2 mm Hg
Mathematics
1 answer:
Ivenika [448]3 years ago
8 0

Answer:

A) 2.6 mm Hg

Step-by-step explanation:

Margin of error = critical value × standard error

ME = CV × SE

n > 30, so we can approximate CV with a normal distribution.  At P = 94%, CV = 1.88.

SE = σ / √n

SE = 13.5 / √92

SE = 1.41

So the margin of error is:

ME = 1.88 × 1.41

ME = 2.6

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