Answer:
Y = 10
Explanation:
We know that the left and top angles are 45°, the base is 10, and the bottom right angle is 90°, or a right angle. The simplest way I can explain this is the bottom side of the triangle is the same as the right side of the triangle. Meaning "y" would be 10 like the bottom.
If I'm right, I'd appreciate a brainliest as it'd really help me out :D
Answer:
Proportional
Step-by-step explanation:
Answer:
The value of 27, because it’s greater than 26.7 and less than 29.3.
Step-by-step explanation:
You should find the confidence Interval at 95%
The formula to apply is;
C.I= x±z*δ/√n
where C.I is the confidence interval, x is the mean of the sample, z is the z* value from the standard normal distribution for 95% confidence interval, δ is the standard deviation and n is the sample size
Substitute values in the formula
Find δ/√n
Calculate z*δ/√n
C.I= 28±1.2652
Upper limit is = 28+1.2652=29.2625
Lower limit is =28-1.2652=26.7348
Solution
The value 27 is within 95% confidence interval because it is greater than 26.7 and less than 29.3
Answer:
The value of the test statistic is z = -0.877.
Step-by-step explanation:
Testing the difference in mean time spent on housework between husbands and wives.
At the null hypothesis, we test if there is no difference, that is, the subtraction of the means is 0:
At the alternate hypothesis, we test if there is a difference, that is, the subtraction of the means is different from 0.
The test statistic is:
In which X is the sample mean, is the value tested at the null hypothesis, and s is the standard error.
0 is tested at the null hypothesis:
This means that
For the wives the mean was 7 hours/week and for the husbands the mean was 4.5 hours/week. The standard deviation of the differences in time spent on house work was 2.85.
This means that
What is the value of the test statistic for testing the difference in mean time spent on housework between husbands and wives?
The value of the test statistic is z = -0.877.
Answer:
1. Chapter 13 in, "Harry Potter and the Prisoner of Azkaban
2. Mosag
3. Willow
4. Puddlemere United
5. ( This is all of her positions that I found) Head of the Improper Use of Magic Office (formerly)
Senior Undersecretary to the Minister of Magic (–1998)
Defence Against the Dark Arts Professor at Hogwarts School of Witchcraft and Wizardry (1995–1996)
Headmistress of Hogwarts (April–June 1996)
High Inquisitor at Hogwarts (1995–1996)
Head of the Muggle-Born Registration Commission (1997–1998)
6. Roger Davies
7. (This one i'm not sure on but i'll keep searching)
8. I believe that is was Fred and George Weasley
9. Dissendium
10. referee Hassan Mostafa
Sorry I didn't get to all of them, I am still getting through a few of the books but I hope this atleast helped a little :)
Step-by-step explanation: