A research scientist measures the outside temperature, in degrees Fahrenheit, at various times throughout a 24-hour period and r
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Given:
Sample proportion = 85% = 0.85.
Confidence level (CL) = 90%.
Confidence interval (CI)
We want the confidence interval to be 5% or 0.05. Therefore
Because this number is less than 1, a default sample size of 30 (for the normal distribution) is recommended.
Answer: 30
Sample proportion = 85% = 0.85.
Confidence level (CL) = 90%.
Confidence interval (CI)
We want the confidence interval to be 5% or 0.05. Therefore
Because this number is less than 1, a default sample size of 30 (for the normal distribution) is recommended.
Answer: 30