Sharon has collected donations of $4.40, $3.12, $8.00, and $6.22 to help buy books for the new library. What is the mean (averag
1 answer:
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Answer:
The confidence interval is
Step-by-step explanation:
From the question we are told that
The sample mean is
The standard deviation is
The sample size is
given that the confidence level is 85% then the level of significance is mathematically represented as
Next we obtain the critical value of from the normal distribution table the value is
Generally the margin of error is mathematically represented as
=>
=>
The 85% confidence interval is mathematically represented as
=>
=>
Answer:
You multiply the denominator and the whole number then add the numerator.
Step-by-step explanation:
Example:
You multiply 3 and 4
3*4=12
Then add the numerator
12+2=14
The final answer would be