Answer:
Since the calculated value of Z does not fall in the critical region we accept our null hypothesis that mean = 60 seconds
Step-by-step explanation:
State the null hypothesis
H0: u = 60against the claim
Ha u≠ 60 (this is a two tailed test)
Sample size n= 36
Sample mean=X`= 55
Population mean = u= 60
The significance level α = 0.05
Standard deviation= Sd = 22 seconds
Z= X`- u / Sd /√n
Z= 55- 60 / 22/√6
z= - 5/22/6
Z= -1.3635
The value of z from the table is Z∝/2= ±1.96
The critical region is less than - 1.96 and greater than 1.96.
Since the calculated value of Z does not fall in the critical region we accept our null hypothesis that mean = 60 seconds
Answer:
Step-by-step explanation:
The equation given calculates the derivative of the height in relation to the time, that is, the rate of change of the height. To find the equation for the height, we need to integrate this equation:
Multiplying both sides by 'dt', we have:
Using the integral in both sides:
So the height after t years is represented by this equation:
Answer:
f(x)= -2x+190
Step-by-step explanation:
Answer:
someone was already answering it so there it is below
6 1/6
Step-by-step explanation:
(9-3)+(7/15-3/10)
subtract the numbers
6+(7/15-3/10)
6+1/6
6 1/6
That answer is 10.7 as the perimeter
