Sumy is working in geometry class and is given figure ABCD in the coordinate plane to reflect. The coordinates of point D are (a
2 answers:
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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:
I can't find the answer for the last one, but here it is
Step-by-step explanation:
Answer:
Now we can estimate the population variance with the sample variance given by:
And replacing we got:
And the estimator for the population deviation is given by :
Step-by-step explanation:
For this case we have the following data given:
1.83,1.85,1.79,1.73,1.69,1.74,1.76,1.70
First we need to calculate the mean with the following formula:
And replacing we got:
Now we can estimate the population variance with the sample variance given by:
And replacing we got:
And the estimator for the population deviation is given by :