Answer:
Step-by-step explanation:
A set of normally distributed data has a mean of 3.2 and a standard deviation of 0.7. Find the probability of randomly selecting 30 values and obtaining an average greater than 3.6.
We can denote the population mean with the symbol 
According to the information given, the data have a population mean:
.
The standard deviation of the data is:
.
Then, from the data, a sample of size 
is taken.
We want to obtain the probability that the sample mean is greater than 3.6
If we call
to the sample mean then, we seek to find:
To find this probability we find the Z statistic.
Where:
Where 
is the standard deviation of the sample
Then:
The probability sought is: 
When looking in the standard normal probability tables for right tail we obtain:
Answer:
0.436 x 6
2.616
More info
Step-by-step explanation:
Brainliest or.. else..
Here is how to work it out:
1 + 5 = 6
36 / (1+5) meaning 36 / 6 = 6
6 * 1 = 6 the smaller number
6 * 5 = 30 the larger number
6 the smaller number + 30 the larger number = 36
The smaller number is 6
Answer:
See Explanation
Step-by-step explanation:
The question is incomplete, as the 8 expressions are not given.
The general explanation is as follows
As complex as an expression may seem, you have to simplify each expression until it cannot be further simplified.
Then you categorize each result, depending on if it equals 
or not
Take for instance:
Using law of indices:
---- equivalent
Factorize the numerator
Cancel out 2
Apply law of indices
---equivalent
Express as exponent
Apply law of indices
---- equivalent
Solve exponents
---- not equivalent
First find the answer without decimals
√225= 15
2.25 has two decimal places, so therefore the square root must contain 1 decimal place.
√2.25= 1.5
Final answer: 1.5
ps -1.5 is also correct but I'm not sure if that's what your teacher wants.
