Answer:
d
Step-by-step explanation:answer is d on edg
For this case, the first thing we must do is define variables.
We have then:
x: number of baseballs
y: total amount
We know that each baseball costs $ m.
We also know that Robert has spent $ b.
Therefore, the expression that models the problem is given by:
Answer:
The following expression represents the total amount Robert will spend after buying x baseballs:
Solution:
To test the hypothesis is that the mean ozone level is different from 4.40 parts per million at 1% of significance level.
The null hypothesis and the alternative hypothesis is :
The z-test statistics is :
z = -1.37
The z critical value for the two tailed test at 99% confidence level is from the standard normal table, he z critical value for a two tailed at 99% confidence is 2.57
So the z critical value for a two tailed test at 99% confidence is ± 2.57
Conclusion :
The z values corresponding to the sample statistics falls in the critical region, so the null hypothesis is to be rejected at 1% level of significance. There is a sufficient evidence to indicate that the mean ozone level is different from 4.4 parts per million. The result is statistically significant.
Answer:
[(8.-3),(3.8),(9,4),(-2,2)}
Step-by-step explanation:
It has to be wider than the first two arcs or else you will just get two circles side by side with point c in common. I usually measure it to be the length of a point between the c and j. It is a good point to get the arcs to intersect.