The sampling distribution of difference between means approximates a normal curve whose mean is zero.
The sampling distribution means the probability distribution based on the large number of samples of size n from the given population
Mean is the average of the given numbers and it is calculated by dividing the sum of observation by the number of observation. Here the term observation represents the given data.
Here they used the normal curve, sot its mean value is zero
To learn more about Sampling distribution here
brainly.com/question/13068170
#SPJ4
Answer:
D. 0.75x + 0.8(x + 10) = 101
Step-by-step explanation:
Answer:
5 months
Step-by-step explanation:
100 105 110 115 120 125
75 85 95 110 115 125