The answer is 2/1, I think. :)
Answer:
0.81418097052
Step-by-step explanation:
just put it in a calculator?
Answer and Step-by-step explanation:
So to figure out the Sales tax column, you make the percentage into a decimal. 7.25% into 0.0725
Then multiply 0.0725 by the cost of the item to get the sales tax. For example, 0.0725 * 8 = 0.58
<u><em>Here's an attachment:</em></u>
Answer:
Jamal stands on a dock 1.5 meters above the surface of the water.A trout swims 4.8 meters below Jamal.What is the depth of the trout compared to the surface of the water?
The position of the trout is 3.3 meters below the surface of the water.
Step-by-step explanation:
Given:
Jamal's position from the surface of the water = 1.5 meters
Trout's position with reference to Jamal's position =4.8 meters (Below)
Trout's position from the surface of the water is unknown.
Let
Trouts position be 's'.
And the surface of the water as equivalent to the origin (0,0) co-ordinate of the Cartesian.
Below water we will assign negative height as it lies on negative y-axis (below the origin).
We have to find 's',which can be known from adding both the values.
So the trout is swimming 3.3 meters below the surface of the water.
We can say that it is below the water so it can also be written as negative 3.3 (according to our coordinates).
The position of the trout is 3.3 meters below the surface of the water.
Answer:
The narrowest confidence interval is obtained with a sample size of 2000 and a 95% confidence interval
Step-by-step explanation:
The confidence interval is the interval
where
= the mean of the sample
<em>s = the standard deviation of the sample
</em>
<em>n = the size of the sample
</em>
<em>z is the z-score corresponding to the level of confidence
</em>
In any case, the width of the interval is 2 times , so we only need to see which value of is the smallest between the different options.
<em>The values of z can be computed either with tables or a spreadsheet.
</em>
Sample size of 1000 and a 95% confidence interval
Sample size of 1000 and a 99% confidence interval
Sample size of 2000 and a 95% confidence interval
Sample size of 2000 and a 99% confidence interval
And we see that the narrowest confidence interval is obtained with a sample size of 2000 and a 95% confidence interval