A normal population has the mean of 10 and the variance of 25 . A random sample of size n-28 is selected. (a) Find the standard deviation of the sample mean. Round your answer to two decimal places (e.g. 98.76)
(b) How large must the sample be if you want to halve the standard deviation of the sample mean?
Answers
Answer:
Step-by-step explanation:
Given that:
population mean = 10
variance = 25 ;
=
= 5
sample size n = 28
The standard deviation of the sample mean:
=
= 0.95
To halve the standard deviation of the sample mean, the size of how large the sample will be can be computed as follows:
= 2
n = 4 × 28
n = 112
The standard deviation is 0.95 and if the standard deviation is halved then the sample mean is 112.
What is a standard deviation?
It is the measure of the dispersion of statistical data. Dispersion is the extent to which the value is in a variation.
A normal population has a mean of 10 and a variance of 25.
A random sample of sizes n-28 is selected.
A. The standard deviation will be
B. The sample be if you want to halve the standard deviation of the sample mean
More about the standard deviation link is given below.
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I would appreciate if you solved number 2
-1+[(10-12)3 divided by (-16)] =
In this card game, a player is dealt 10 cards. A player wins $1,000,000 if he is dealt 8 hearts. Use combinatorics to set up your problem a. Calculate the probability a player is dealt exactly 8 hearts b. Calculate the probability a player is dealt exactly 8 hearts if the first tweo cards he was dealt were diamonds. 2
h(x)=-49x-125
Answers
h(-67) = 3158
General Formulas and Concepts:
Order of Operations: BPEMDAS
- Substitution and Evaluation
Step-by-Step Explanation:
Step 1: Define
h(x) = -49x - 125
h(-67)
Step 2: Solve
1. Substitute: h(-67) = -49(-67) - 125
2. Multiply: h(-67) = 3283 - 125
3. Subtract: h(-67) = 3158
04
01-2
110
16.
Answers
For the function h(x) = 6 - X the value of (hoh)(10) is 10.
What is a function?
A relation is a function if it has only One y-value for each x-value.
The given function is h(x) = 6 - X
We have to find the value of (hoh)(10)
The composite function (hoh)(10) can be written as h(h(10))
h(h(10))
Plug in the value 10 in place of x
=h(6-10)
=h(-4)
Now let us find h(-4)
=6-(-4)
=6+4
=10
Hence, for the function h(x) = 6 - X the value of (hoh)(10) is 10.
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Answer:
h(h(10))---> h(-4)---->10 ......hOh(10)=10
Step-by-step explanation:
Answers
Answer:
i am aware that this is already answered but here is proof that the person above is correct!
Step-by-step explanation:
Answer: A), No
Step-by-step explanation:
Answers
Answer:
111°
Step-by-step explanation:
By exterior angle theorem:
Answer:
x = 111
Step-by-step explanation:
180- 82 -29 is 69 and 180-69 is x which x is equal to 111
Answers
Soh is sine, which is equal to opposite over hpotenuse
Cah is cos which is equal to adjacent over hypotenuse
Toa is tan which is equal to opposite over adjacent
Answers
Answer:
a. 0.5 or 50%
b. 5 rolls.
Step-by-step explanation:
a. There are 30 possible outcomes for this experiment, the sample space for the outcomes in which the six-sided die produces a value larger than the roll of the five-sided die is:
S={6,1; 6,2; 6,3; 6,4; 6,5; 5,1; 5,2; 5,3; 5,4; 4,1; 4,2; 4,3; 3,2; 3,1; 2,1}
There are five outcomes when rolling a 6, four when rolling a 5, three when rolling a 4, two when rolling a 3 and one when rolling a two.
The probability is:
b. The probability of rolling a 3 on the five-sided die is 1 in 5 or 0.20. The expected number of rolls until a fair five-sided die rolls a 3 is: