We are given with
x1 = 20 min
s1 = 2 min
x2 = 30 min
s2 = 4 min
p = 0.9
Condition (x > 25)
We need to get the t-value between the two means and comparing it wit the t-value for the time of 25 minutes given that there is a 90% probability that the weather will be good. Simply use the t-test formula and use the t-test table to get the probability.
Answer:
the √78 would be 8.832 so D
The number is 14
Here's the solution:
Let the number be x
According to the question,
27+7x=125
//Subtract 27 from both the sides
7x=125-27
7x=98
//divide both the sides by 7
x=98/7
x=14
Answer:
Step-by-step explanation:
Given : Sample size : n= 33
Critical value for significance level of :
Sample mean :
Standard deviation :
We assume that this is a normal distribution.
Margin of error :
i.e.
Hence, the margin of error is
Answer:
Y=1/5x+ -2
Step-by-step explanation:
Hope this helps