Answer:
The 98% confidence interval for the difference of the mean amount of June precipitation in Michigan cities and Ohio cities is (-1.77, 0.29).
Step-by-step explanation:
The (1 - <em>α</em>)% confidence interval for the difference between two population mean is:
Compute the value of sample means and sample standard deviations from the provided data.
The critical value of <em>t</em> for 98% confidence level and (n - 1) = 4 degrees of freedom is:
Compute the 98% confidence interval for the difference of the mean amount of June precipitation in Michigan cities and Ohio cities as follows:
Thus, the 98% confidence interval for the difference of the mean amount of June precipitation in Michigan cities and Ohio cities is (-1.77, 0.29).
Answer:
3
Step-by-step explanation:
The rate of change between two points a and b(a<b) for a fynction f is given by the formula:
- r =
so our rate of change is
- r =
- r =
- r=3
Answer:
Diana approximately had 128 cards
Step-by-step explanation:
Let n be the number of cards Diana had. She knows that
- there are 17 kings among n cards
- 4 kings among 30 cards
Write a proportion:
Cross multiply:
45,120 if its ten.
45,000 if its ten thousand