Answer:
make an account on what ?
Step-by-step explanation:
Answer:
Yes, this is a right triangle.
Step-by-step explanation:
The Pythagorean Theorem states that if the sum of the squares of the two small sides of a triangle add up to the square of the longest side, then the triangle is a right triangle: a² + b² = c², where a and b are the smallest sides (called legs) and c is the longest side (called the hypotenuse).
Here, the two smallest sides are 10 and 49.5, so let's square them, add them up, and see if they add up to 50.5²:
10² = 100
49.5² = 2450.25
100 + 2450.25 = 2550.25
50.5² = 2550.25
Since 10² + 49.5² equals 50.5², we know that this is a right triangle.
Thus, yes, this is a right triangle.
Answer:
Step-by-step explanation:
a) While the mean is below 4 the standard deviation tells us that there is a pretty high chance for the value to be above 4. One standard deviation away is 1.79 - 5.65. We are concerned with things over 4 so we'll look at the upper half, which is 3.72 - 5.65. Being one standard deviation to the right means there is a 34.1% chance of the readings being in this range. And there is even chances of it being slightly higher, though that is comparatively low. But even as low as 10% is usually considered too high a chance to risk. If you don't understand how the standard deviation got me those percents let me know.
b) alternative hypothesis is always the option where we want to prove it. So we want to prove the concentration is 4 or above. So the null is less than 4 and the alternative is greater than or equal to 4. Do you know the correct symbols? if not I can get those written out. As for the p value we need the confidence level for the question, do you have that?
I can’t see the table. Include an attachment?
