Answer:
Yes, the mean number is more than 40
Step-by-step explanation:
The null hypothesis
H0 = mean is 40
Let´s make the t test
t = (x – mean) / standard deviation / √sample size
t = (42 – 40) / 2.1 / √28
t = 5.039
now we find t value for one tail, using a T-distribution table
df = n – 1 = 27
α = 0.05
so, t = 1.703
since our calculated t value is greater than the t for the table, the null hypothesis can be rejected. So the mean number of calls per salesperson per week is more than 40.
Answer:
2 2/3
Step-by-step explanation:
Answer:
974446740
Step-by-step explanation:
use a calculator.
Answer: 4.9
Step-by-step explanation: delta math
Answer:
4x
Step-by-step explanation:
Given the expression
4x² - 36x
Get the individual factor of each terms
4x² = 4 * x * x
36x = 4 * 9 * x
4x² - 36x = 4x(x-9)
From both factors we can see that 4*x is common to them, hence the greatest common factor is 4x