9 x 8 = 72
155 - 72 = 83
83 divided by 6 =13.8
So he has to make at least 14 deliveries in order to reach his goal.
Answer:
Th computed value of the test statistic is 3.597
Step-by-step explanation:
The null and the alternative hypothesis is as follows:
Null Hypothesis:
the population correlation coefficient is equal to zero
the population correlation coefficient is not equal to zero
The test statistics for Pearson correlation coefficient is thus computed as :
![t =\dfrac{r \sqrt{(n-2)}} { \sqrt{(1-(r)^2)} }](https://tex.z-dn.net/?f=t%20%3D%5Cdfrac%7Br%20%5Csqrt%7B%28n-2%29%7D%7D%20%7B%20%5Csqrt%7B%281-%28r%29%5E2%29%7D%20%7D)
where;
r = correlation coefficient = 0.60
n = sample size = 25
So;
![t =\dfrac{0.60 \sqrt{(25-2)}} { \sqrt{(1-(0.60)^2)} }](https://tex.z-dn.net/?f=t%20%3D%5Cdfrac%7B0.60%20%5Csqrt%7B%2825-2%29%7D%7D%20%7B%20%5Csqrt%7B%281-%280.60%29%5E2%29%7D%20%7D)
![t =\dfrac{0.60 \sqrt{(23)}} { \sqrt{(1-0.36} }](https://tex.z-dn.net/?f=t%20%3D%5Cdfrac%7B0.60%20%5Csqrt%7B%2823%29%7D%7D%20%7B%20%5Csqrt%7B%281-0.36%7D%20%7D)
![t =\dfrac{0.60 *4.796} {0.8}](https://tex.z-dn.net/?f=t%20%3D%5Cdfrac%7B0.60%20%2A4.796%7D%20%7B0.8%7D)
t = 3.597
Comparing to a critical value of t (23 degrees of freedom two-tailed value) = 2.069
Decision Rule:
Since computed value of t is greater than the critical value of t; We reject the null hypothesis and accept the alternative hypothesis.
Conclusion:
We conclude that the population correlation coefficient significantly differs from 0 at 5% (0.05) level of significance.
Answer:
f=u+2
Step-by-step explanation:
math
Probably A I am not really sure I am trying sorry if it is wrong