Answer: 
Step-by-step explanation:
- A null hypothesis is a type of hypothesis that is used in statistics that assumes there is no difference between particular characteristics of a population wheres the alternative hypothesis shows that there is a difference.
Given: A 37 bag sample had a mean of 421 grams.
Let 
be the population mean.
Then, the null hypothesis would be:
whereas the alternative hypothesis would be:
Answer:
12
Step-by-step explanation:
It does not say what the tax is so the answer would be 12. You just divide 2 by 24.
Answer:
x=3
Step-by-step explanation:
I am assuming that your equation is:
Subtract 4 from both sides to get:
Square both sides to get:
Divide both sides by 8 to get:
Answer:
1/3628800
Step-by-step explanation:
This question requires that we calculate
1/number of permutations of 10 cities
= P(n,k) = n!/(n-k)!
We have
n = 10
k = 10
= 10!/(10-10)!
= 10!
number of permutations of 10 cities 10! This Is equal to 3,628,800
From this answer we the probability of doing a random tour of these 10 different cities in alphabetical order.
And this is
= 1/3,628,800
We use the formula:
x± s <span>t_<span>(1−c)/2 / </span></span>√n = 5
(1 - c)/2 = (1 - 0.95) / 2 = 0.025
Using the t score calculator at this value, at the 95% confidence internval,
t = 0.5080, So
100 - 19(0.5080) / √n = 5
Solving for n
n = 97
a) 97
b) yes
