Wang Min is from Boston, where the cost of living is higher than it is in San Francisco. Wang Min's parents are discouraging her
1 answer:
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Answer:
The minimum sample size is
Step-by-step explanation:
From the question we are told that
The confidence interval is
The margin of error is
Generally the sample proportion can be mathematically evaluated as
Given that the confidence level is 98% then the level of significance can be mathematically evaluated as
Next we obtain the critical value of from the normal distribution table
The value is
Generally the minimum sample size is evaluated as
Answer:
cm
Step-by-step explanation:
As this problem is involving the adjacent and hypotenuse sides, we will be using the cosine function
We can setup an equation as follows
We can now solve for x
This rounds to