A spinner has 6 numbers on it, from 1-6, all with equally spaced area. Find the probability of spinning a
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Answer:
The least number of tennis balls needed for the sample is 1849.
Step-by-step explanation:
The (1 - <em>α</em>) % confidence interval for population proportion is:
The margin of error for this interval is:
Assume that the proportion of all defective tennis balls is <em>p</em> = 0.50.
The information provided is:
MOE = 0.03
Confidence level = 99%
<em>α</em> = 1%
Compute the critical value of <em>z</em> for <em>α</em> = 1% as follows:
*Use a <em>z</em>-table.
Compute the sample size required as follows:
Thus, the least number of tennis balls needed for the sample is 1849.
The minimum sample size required for a test with a confidence interval of 
with a z-score of 
and margin of error of E and a population proportion of p is given by:
Given p = 34% = 0.34, E = 0.027,
Therefore,
Given p = 34% = 0.34, E = 0.027,
Therefore,