There are 28 female performers in a dance recital. The ratio of men to women is 3:7. How many men are in the dance recital?
2 answers:
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Answer: 83
Step-by-step explanation:
The confidence interval for population mean is given by :-
Given : The student obtained the following 95% confidence interval (in grams) for the population mean, (862,1028).
Here,
Lower limit of the confidence interval : (1)
Upper limit of the confidence interval : (2)
Subtracting (1) from (2) , we get
Hence, the margin of error = 83