Answer:
The margin of error for a confidence interval for the population mean with a 90% confidence level is 0.53 hours.
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find the margin of error M as such
In which is the standard deviation of the population and n is the size of the sample.
In this quesstion:
So
The margin of error for a confidence interval for the population mean with a 90% confidence level is 0.53 hours.
Answer:
10
Step-by-step explanation:
This problem is unsolvable with the answers you gave. The ratio of quarters to nickels would be 5 to 15, or 1 to 3 for fractions.
Answer: 6 inches
Step-by-step explanation:
From the question, we are informed that a map in Connecticut is drawn to a scale where 2 inches on the map represents 35 miles.
If Greenwich and stonington are 105 miles from each other, to calculate their distance on the map will be:
Since 2 inches represent 35 miles, then: 1 inch = 35miles/2 = 17.5 inches.
Since 1 inch = 17.5 inches;
105 inches will then be: 105inches/17.5 inches = 6 inches
Therefore, 6 inches represent 105 miles.
Answer: Third option is correct.
Step-by-step explanation:
Since the complete circle is in blue region,.
And we have to throw a dart into the circle.
Its probability will be 1 .
So, It is likely.as the whole circle is blue .
so, there is no chance to go outside the blue region.
Therefore, it is likelihood that the dart will land into the blue region.
Hence, Third option is correct.