<u>Answer with explanation:</u>
As per given , we have
A sample of 50 gribbles finds an average length of 3.1 mm with a standard deviation of 0.72.
i.e. n= 50
Degree of freedom = n-1=49
The point estimate of the population mean is equals to the sample mean.
i.e. The best estimate for the length of gribbles= 3.1 mm
Also, population standard deviation is unknown , then the confidence interval would be :
For df= 49 and significance level of 0.05 , the t- value (using t-distribution table) would be :
Now, Margin of error : 
95% confidence interval : 
Answer: what is the question?
Step-by-step explanation:
81.27 is the answer to 21% of 387 so a good estimate would be 82
Answer:
Step-by-step explanation:
first if you reflect an image its still identical think of it as a mirror its the same but on the other side. so if you flip it over the x or y axis it would just be as if you folded the paper and shape is on the other side. a rotation would be as if you moved the shape to another quadrant so if you move it 90 degres to the left it would be be turned slightly and a transformation if you slide it up the image is however many space it was from its current location. so each one moves it from its current location
Answer:
11340
Step-by-step explanation:
We have 10 cheerleaders of ten different heights. There are two rows each having 5 positions so that five cheerleaders occupy the first row that have height less than the five cheerleaders who occupied the second row.
Therefore, Out of ten cheerleaders, two cheerleaders will be selected out of which the tallest one will occupy the position in the upper row and the second one will occupy in the lower row, therefore these two positions will be occupied in 
ways. Now, we are left with 8 cheerleaders and following the same path, the next two positions will also be occupied in 
ways, similarly, following the same path, the number of ways the cheerleaders will occupy the position will be: ××
×
×
=11340
