Answer:

Step-by-step explanation:
Since we have given that
A toy manufacturer claims that the mean time that its top-selling toy captures children's attention is at least 45 minutes.
Since we need to carry out a hypothesis test whether he can refute the claim.
We always take the alternate hypothesis such that it should satisfy the given statement.
And the null hypothesis can be equal to mean or other than that is given in alternate hypothesis.
So, hypothesis :

Answer:
The value is
Step-by-step explanation:
From the question we are told that
The mean of Jo cows is 
The standard deviation of Jo cow is 
The mean of Val cows is 
The standard deviation of Val cows is 
The sample size for both Val and Jo is n = 25
Let assume that the level of significance is 
Generally from the normal distribution table the critical value of
is
Generally the margin of error is mathematically represented as
Hence margin of error for Jo is
=>
=>
06.02 that he prediction is that he will land on heads and tails the same amount of times? Maybe that helped you some
: 1) If you were going to solve these, you would set them up like this.
s+p=19
7s+10p=121
among the choices, b is the only one that is equivalent to one of these equations
2) The problem looks a little confusing. If the price is per box then they easily make $275.
8b+9h=53
20*8b+30*9h=275
If it's per batch, the answer is B.
3. x^2+y^2=16
y=x+4
solve the first equation for y
y=√16-x^2
x+4=√16-x^2
(x+4)^2=16-x^2
x^2+8x+16=16-x^2
2x^2+8x=0
2x(x+4)=0
x=0 or x=-4
(be carefull i copyed and pasted the answer)
Answer:
the answer is space
Step-by-step explanation: