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Verizon [17]
3 years ago
9

How do you write 164.38 on expanded

Mathematics
1 answer:
andrew-mc [135]3 years ago
6 0

Answer:

164  19/50

Step-by-step explanation:

Rewrite 164.38 as 164 + 38/100.  This, in turn, can be reduced to 164 + 19/50, or just

164  19/50.

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The following information is obtained from two independent samples selected from two normally distributed populations.
AysviL [449]

A. The point estimate of μ1 − μ2 is calculated using the value of x1 - x2, therefore:

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B. The formula for confidence interval is given as:

Confidence interval = (x1 –x2) ± z σ

where z is a value taken from the standard distribution tables at 99% confidence interval, z = 2.58

and σ is calculated using the formula:

σ = sqrt [(σ1^2 / n1) + (σ2^2 / n2)]

σ = sqrt [(2.35^2 / 18) + (3.17^2 / 15)]

σ = 0.988297

 

Going back to the confidence interval:

Confidence interval = 1.83 ± (2.58) (0.988297)

Confidence interval = 1.83 ± 2.55

Confidence interval = -0.72, 4.38

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