Answer:
The mean and standard deviation of Y are, 94 and 0.28 respectively.
Step-by-step explanation:
Let the random variable , 'Test grades on the last statistics exam' be X.
Then according to the question,
E(X) = 78 ------------(1)
and
= 0.14------------(2)
Now, according to the question,
Y = 2(X - 31)
⇒E(Y) = 2(E(X) - 31)
=
= 94 ----------------(4)
and
V(Y) = 4V(X)
⇒
⇒ = 0.28
So, the mean and standard deviation of Y are, 94 and 0.28 respectively.
Answer:
Decision rule is
Fail to reject the null hypothesis
The conclusion is
There is sufficient evidence that indicate that there is a significant difference between the two treatments
Step-by-step explanation:
From the question we are told that
The sample size is n = 12
The first mean is
The variance is
The second mean is
The second variance is
Let the level of significance be
The null hypothesis is
The alternative hypothesis is
Generally the test statistics is mathematically
=>
=>
Generally the degree of freedom is mathematically represented as
=>
Generally from the t- distriibution table the critical value of at a degree of freedom of is
Here given that the critical value is greater than the t statistics value the
Decision rule is
Fail to reject the null hypothesis
The conclusion is
There is sufficient evidence that indicate that there is a significant difference between the two treatments
Step-by-step explanation:
plant cells have a cell wall for to prepared their own food but animal cell haven't cell wall
plant cell have a large vacuoles but in plant cell it has Avery small vacuoles the two have the main difference between animal cell plant cell