Kiran and his cousin work during the summer for a landscaping company. Kiran's cousin has been working for the company longer, s
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When you are lining up the ratios, make sure they are aligning each other with the same unit.
When you are lining up the ratios, make sure they are aligning each other with the same unit.
Answer:
D. The 95% confidence interval is (3.4102, 4.1898). We are 95% confident that the true population mean potassium level for professional wrestlers will be between 3.4102 millimoles per liter and 4.1898 millimoles per liter.
Step-by-step explanation:
Hello!
The variable if interest is X: potassium level of a professional wrestler (mmol/L)
A sample of n= 52 professional wrestlers was taken and a sample mean of X[bar]= 3.8 mmol/L and a sample standard deviation of S= 1.4 mmol/L
You have to estimate the population average potassium level using a 95% confidence interval. Assuming that the variable has a normal distribution, and since the population variance is unknown, I'll use a student t to construct the interval:
[X[bar] ± *
]
[3.8±2.008*]
[3.4102; 4.1898]
With a 95% confidence level you'd expect that the interval [3.4102; 4.1898]mmol/L will contain the average potassium level of professional wrestlers.
I hope this helps!