Check the picture below
the angle is in degrees, thus, when taking the tangent, make sure your calculator is in Degree mode
the angle is in degrees, thus, when taking the tangent, make sure your calculator is in Degree mode
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Answer:
Random variable: for this case represent the number of complaints in 2007
Population parameter: represent the real proportion of complaints in 2007 p
Hypothesis to verify
We want to check if the true proportion of complaints in 2007 is equal to 0.23, the system of hypothesis are.:
Null hypothesis:
Alternative hypothesis:
Step-by-step explanation:
Information provided
n=1432 represent the random sample taken
X=321 represent the number of complaints
estimated proportion of complaints in 2007
is the value to verify
z would represent the statistic
Random variable: for this case represent the number of complaints in 2007
Population parameter: represent the real proportion of complaints in 2007 p
Hypothesis to verify
We want to check if the true proportion of complaints in 2007 is equal to 0.23, the system of hypothesis are.:
Null hypothesis:
Alternative hypothesis: