Answer:
a) 2.66
b) 9
Step-by-step explanation:
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean and standard deviation , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean and standard deviation .
part A: what is the standard deviation of the sampling distribution of x hat? show your work.
We have that . So
PartB: what does the sample size need to be if you want the standard deviation of the sampling distribution of x hat to be 2.8?
This is n when . So
The airplane travels 200 mph
4 i think when its not simplified.
Answer:
By dividing the top number by the bottom.
Step-by-step explanation:
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Question: 50 is what percent of 32?
Answer:156.25 or 156.3
Step 1: We make the assumption that 32 is 100% since it is our output value.
Step 2: We next represent the value we seek with x
Step 3:100%=32
Step 4:x%=50
Step 5:100%=32 x%=50(2)
Step 6:100%/x%=32/50
Step 7:x%/100=50/32 will give u 156.25% or round to the nearest tenth 156.3%