let's check the set for any repeated x-values, namely any X-Repeats, if it does have repeated x-values, then is NOT a function, if it doesn't have any repeated x-values, then it IS a function.
Answer:
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Step-by-step explanation:
Answer: 150
Step-by-step explanation: you have to multiply 50 and 3 and the answer is 150
Using the formula for a z-distribution confidence interval of proportions, he also needs to know the confidence level.
<h3>What is a confidence interval of proportions?</h3>
A confidence interval of proportions is given by:
In which:
- is the sample proportion.
Of these 3 itens, the problem states that he knows the sample size and the sample proportion, hence he needs to know z to determine the confidence interval. z depends on the confidence level, which is the remaining parameter.
More can be learned about the z-distribution at brainly.com/question/25890103
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