Translate the sentence into an equation. Seven times the difference of a number and 3 is 35.
2 answers:
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Answer: b. 8.56 to 21.44
Step-by-step explanation:
Let be the mean number of pushups that can be done.
As per given , we have
Sample size : n= 10
Degree of freedom = n-1=9
Sample mean :
Sample standard deviation :
Significance level : α=1-0.95=0.05
From t- distribution table ,
Critical two -tailed t-value for α=0.05 and df = 9 is
Confidence interval for is given by :-
Hence, the 95% confidence interval for the true mean number of pushups that can be done is 8.56 to 21.44.