Imagine that Amy counted 60 numbers per minute and continued to count nonstop until she reached 19,000. Determine a reasonable e
1 answer:
Answer:
It will take Amy approximately 5 hours to count to 19000
Step-by-step explanation:
Amy counts 60 numbers per minute, since an hour has 60 minutes, this means that Amy will count 60 x 60 =3600 numbers per hour.
Now we divide the quantity of numbers she counts: 19,000 by 3600 (numbers she counts per hour)
÷
Therefore, it will take Amy approximately 5 hours to count to 19000
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Answer:
The 95% confidence interval for the percent of all coffee drinkers who would say they are addicted to coffee is between 21% and 31%.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
The margin of error is:
A confidence interval has two bounds, the lower and the upper
Lower bound:
Upper bound:
In this problem, we have that:
Lower bound:
Upper bound:
The 95% confidence interval for the percent of all coffee drinkers who would say they are addicted to coffee is between 21% and 31%.