Greg earned $45.76 in 6.4 hours. How much did he earn per hour?
2 answers:
Answer:
<h2>The answer is option A</h2>Step-by-step explanation:
To solve this question we use ratio and proportion
From the question
The person earns $ 45.76 in 6.4 hours
If the person in 6.4 hours earn $ 45.76
Then in 1 hour the person will earn
<h2>We have the final answer as
<h2>$ 7.15</h2>Hope this helps you
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Answer:
to
Step-by-step explanation:
Given :The owner of a restaurant is reviewing customer complaints. In a random sample of 227 complaints, 57 complaints were about the slow speed of the service.
To Find :Create a 95% confidence interval for the proportion of complaints that were about the slow speed of the service.
Solution:
n = 227
x = 57
Formula of confidence for proportion: to
z at 95% is 1.96
Substitute the values in the formula :
Confidence for proportion: to
Confidence for proportion: to
Hence 95% confidence interval for the proportion of complaints that were about the slow speed of the service is to