Answer:
d. 0.0948 ± 4.032(0.0279)
Step-by-step explanation:
A 99% confidence interval for the coefficient of promotional expenditures is, First, compute the t critical value then find confidence interval.
The t critical value for the 99% confidence interval is,
The sample size is small and two-tailed test. Look in the column headed es = 0.01 and the row headed in the t distribution table by using degree of freedom is here
for (n-2=5) degree of freedom and 99% confidence ; critical t =4.032
therefore 99% confidence interval for the slope =estimated slope -/+ t*Std error
= 0.094781123 -/+ 4.032* 0.027926367 = -0.017822 to 0.207384
Its 3,167 hope this helped
Answer:
See below
Step-by-step explanation:
With regards to the above, since 2hours was spent yesterday , and 4 hours today, the percentage of the increase would be 200%
The reason being that since double of the hours spent yesterday on homework were spent today, hence 200%
It’s= -0.6
(Hopefully it helped)