A machine fills 80 containers of cookies in 20 minutes. At the same rate, how many containers of cookies could the machine fill
2 answers:
Answer : The number of containers of cookies machine fill in 8 hours can be, 1920
Step-by-step explanation :
As we are given that a machine fills 80 containers of cookies in 20 minutes. Now we have to determine the number of containers of cookies could the machine fill in 8 hours.
First we have to convert minutes into hours.
As, 60 minutes = 1 hour
So, 20 minutes = hour
Now we have to determine the number of containers of cookies could the machine fill in 8 hours.
As, in hour the number of containers of cookies can machine fill = 80
As, in 8 hours the number of containers of cookies can machine fill =
Therefore, the number of containers of cookies machine fill in 8 hours can be, 1920
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Answer:
The 90% confidence interval is (0.1897, 0.2285).
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence interval
, we have the following confidence interval of proportions.
In which
Z is the zscore that has a pvalue of
For this problem, we have that:
From a July 2019 survey of 1186 randomly selected Americans ages 18-29, it was discovered that 248 of them vaped (used an e-cigarette) in the past week. This means that
Construct a 90% confidence interval to estimate the population proportion of Americans age 18-29 who vaped in the past week.
So , z is the value of Z that has a pvalue of
, so
.
The lower limit of this interval is:
The upper limit of this interval is:
The 90% confidence interval is (0.1897, 0.2285).