Claim: The mean pulse rate (in beats per minute) of adult males is equal to 69 bpm. For a random sample of 125 adult males,
1 answer:
Answer:
0.6865
Step-by-step explanation:
test statistic is given by the formula
test statistic =
where = mean of the sample
μ= mean
n= sample space
σ= standard deviation
we have given mean of sample =69
mean μ=68.3
σ=11.4
sample space=125
putting all these value in formula of test statistic
test statistic=
=0.6865
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Answer:
Step-by-step explanation:
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And the vector B is formed with the solution of each equation of the system:
To apply the Cramer's rule, take the matrix A and replace the column assigned to the variable that you need to solve with the vector b, in this case, that would be the second column. This new matrix is going to be called .
The value of y using Cramer's rule is:
Find the value of the determinant of each matrix, and divide: