1) A spinner is spun 500 times.
2 answers:
Answer:
20.8%(If the problem asks you to round it would be 21%)
Step-by-step explanation:
To solve this question, we need to know 2 things:
The denominator, and the numerator.
The denominator is 500, as that is the amount of times we spin a spinner.
The numerator is 104, as that is the amount of times the spinner lands on red.
Now to find the percentage, we divide the numerator by the denominator to get:
=
20.8%
Hope this helps! :3
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Answer:
The maximal margin of error associated with a 95% confidence interval for the true population mean is 2.238.
Step-by-step explanation:
We have given,
The sample size n=42
The sample mean
The population standard deviation
Let be the level of significance = 0.05
Using the z-distribution table,
The critical value at 5% level of significance and two tailed z-distribution is
The value of margin of error is
The maximal margin of error associated with a 95% confidence interval for the true population mean is 2.238.