Question

In a previous year, 56 % of females aged 15 and older lived alone. A sociologist tests whether this percentage is different today by conducting a random sample of 350 females aged 15 and older and finds that 203 are living alone. Is there sufficient evidence at the alpha equals0.01 level of significance to conclude the proportion has changed?

z_{0}=

P-value=

Answer #1

In a previous year, 58% of females aged 15 and older lived
alone. A sociologist tests whether this percentage is different
today by conducting a random sample of 650 females aged 15 and
older and finds that 367 are living alone. Is there sufficient
evidence at the alphaαequals=0.01 level of significance to conclude
the proportion has changed?

In a previous year, 61% of females aged 15 and older lived
alone. A sociologist tests whether this percentage is different
today by conducting a random sample of 750 females aged 15 and
older and finds that 456 are living alone. Is there sufficient
evidence at the alphaequals0.01 level of significance to conclude
the proportion has changed? Determine the P-value for this
hypothesis test.

In a previous year, 51% of females aged 15 and older lived
alone. A sociologist tests whether this percentage is different
today by conducting a random sample of 550 females aged 15 and
older and finds that 287 are living alone. Is there sufficient
evidence at the alphaequals0.01 level of significance to conclude
the proportion has changed? Because np 0 left parenthesis 1 minus
p 0 right parenthesisequals nothing ▼ greater than less than not
equals equals 10, the sample...

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What tools could AA leaders have used to increase their
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???ALASKA AIRLINES: NAVIGATING CHANGE
In the autumn of 2007, Alaska Airlines executives adjourned at
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