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Malari4445
03.12.2019 •
Mathematics
According to a survey, 50% of americans were in 2005 satisfied with their job.assume that the result is true for the current proportion of americans. a. find the mean and standard deviation of the proportion for a sample of1000.
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Ответ:
Step-by-step explanation:
The probability distribution of sampling distribution
is known as it sampling distribution.
The mean and standard deviation of the proportion is given by :-
, where p =population proportion and n= sample size.
Given : According to a survey, 50% of Americans were in 2005 satisfied with their job.
i.e. p = 50%=0.50
Now, for sample size n= 1000 , the mean and standard deviation of the proportion will be :-
Hence, the mean and standard deviation of the proportion for a sample of 1000:
Ответ:
It would be the one that has the most Xs for the number 10
Step-by-step explanation:
10 should count to 6 Xs