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Answer: 160.4040
Step-by-step explanation:
Here , the claim is "The standard deviation of pulse rates of adult males is more than 11 bpm." , i.e.
We use Chi-square test statistic for the test statistic to test the standard deviations :
, where s= sample standard deviation ,
= population standard deviations and n = sample size.
As per given , n=153 , s= 11.3
Then, Required test statistic will be :
Hence, the value of the test statistic. = 160.4040
ANSWER
A.
EXPLANATION
The given inequality is
We add the additive inverse of 18, which is -18 to both sides of the equation to get,
Recall that,
This implies that,
We simplify to get,
We now divide both sides by 10 to obtain,
We cancel out the common factors to get,
The correct answer is A.
A.
EXPLANATION
The given inequality is
We add the additive inverse of 18, which is -18 to both sides of the equation to get,
Recall that,
This implies that,
We simplify to get,
We now divide both sides by 10 to obtain,
We cancel out the common factors to get,
The correct answer is A.