What is 8.194 rounded to the nearest tenth
2 answers:
You might be interested in
Andre walks more steps than Priya.
To find out who many steps each one of them walks in a week, we have to carry out different calculations starting with Andre.
Calculation for number of steps taken by Andre
Andre takes 6000 steps in 50 minutes. We can use this information to scale up his number of steps over a period of 5 hours(300 minutes.). The quickest way to do this calculation, is to notice that there are 6 different 50 minute segments in 300 minutes. This means that the number of steps taken in 5 hours is steps.
Another way to do this calculations is to use proportions
.
Andre takes 36000 steps that week.
Calculation for number of steps taken by Priya
The number of steps taken by Priya is given by the is given by the function where
is the time in minutes. Priya walks for a total of 5 hours or 300 minutes. We calculate the number of steps she takes as shown below,
Priya takes a total of 35400 steps.
Since 36000 steps is greater than 35400 steps, we conclude that Andre walks more steps than Priya.
Answer:
The 95% confidence interval for the population mean rating is (5.73, 6.95).
Step-by-step explanation:
We start by calculating the mean and standard deviation of the sample:
We have to calculate a 95% confidence interval for the mean.
The population standard deviation is not known, so we have to estimate it from the sample standard deviation and use a t-students distribution to calculate the critical value.
The sample mean is M=6.34.
The sample size is N=50.
When σ is not known, s divided by the square root of N is used as an estimate of σM:
The degrees of freedom for this sample size are:
The t-value for a 95% confidence interval and 49 degrees of freedom is t=2.01.
The margin of error (MOE) can be calculated as:
Then, the lower and upper bounds of the confidence interval are:
The 95% confidence interval for the mean is (5.73, 6.95).