Avery had $25.19 in her wallet. If she bought lunch with 7 & dollars from her wallet, how much money did she have in her wal
2 answers:
- Avery had $25.19 in her wallet
- If she bought lunch with 7 & dollars from her wallet
- how much money did she have in her wallet after lunch?
Subtract the original amount in her wallet by the amount she spent to find the remaining amount of money.
- $25.19-$7.00 =$18.19
- $18.19 money did she have in her wallet after lunch
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Answer:
The mean of the sampling distribution of the sample proportions is 0.82 and the standard deviation is 0.0256.
Step-by-step explanation:
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
.
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
For proportions, the mean is and the standard deviation is
In this problem, we have that:
.
So
The mean of the sampling distribution of the sample proportions is 0.82 and the standard deviation is 0.0256.