Using the t-distribution, we have that the 95% confidence interval for the true mean number of pushups that can be done is (9, 21).
For this problem, we have the <u>standard deviation for the sample</u>, thus, the t-distribution is used.
- The sample mean is of 15, thus
. - The sample standard deviation is of 9, thus
. - The sample size is of 10, thus
.
First, we find the number of degrees of freedom, which is the one less than the sample size, thus df = 9.
Then, looking at the t-table or using a calculator, we find the critical value for a 95% confidence interval, with 9 df, thus t = 2.2622.
The margin of error is of:
Then:
The confidence interval is:
Then
The confidence interval is (9, 21).
A similar problem is given at brainly.com/question/25157574
First, convert the 33% to a real mathematical number. For percents, this is always done by dividing the 33% by 100%, or 33% / 100% = 0.330.
Second, find out what 33% of $2799 is. This is the amount of the sale discount. This is always found by mulitplying 0.330 by the item's cost $2799, like this:
0.330 x $2799 = $923.67.
So for this sale, you'll save $923.67 on this item.
This means, the cost of the item to you is
$2799 - $923.67 = $1875.33.
Alternatively, you can think about it this way. The item is 33% off. This means you'll pay 67.000% of the total cost (100% - 33% = 67.000%).
Now what's 67.000% of the total cost?
0.670 x $2799 = $1875.33.
Just like the result above, the sale price on the item is $1875.33.
Hope this helps you on your assignment! :)
Answer:
14.34 in
Step-by-step explanation:
calculator website i'll link below
Answer:
184 legs
Step-by-step explanation:
All the numbered beasts are 7 bees, 5 cockroaches, 8 spiders, 3 deer, 4 boars and since antlers belong to the family of the deer and they come in pairs for each animal and its a pair its number is 1, and the 4 unicorns friends.
The number of legs for each beast are as follow:
- Bees have 6 legs
- cockroaches have 6 legs
- Spiders have 8 legs
- Deer have 4 legs
- Boars have 4 legs
- Antlers belonging to deer family=1
- Unicorns have 4 legs
Total number of legs= (7×6)+(5×6)+(8×8)+(3×4)+(4×4)+(1×4)+(4×4)=184
