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ID: 3051915 • Letter: T
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Next THREE questions are related The mean birth weight of babies is = 3400 grams with a standard deviation of = 580 grams. 10 For samples of size n = 60 babies selected from this population, the standard error of the sample mean is: a 79.37 b 74.88 c 67.39 d 60.65 11 For samples of size n = 60 babies selected from this population, the fraction of sample means that fall within 3300 and 3500 grams is, a 0.8764 b 0.8502 c 0.8198 d 0.7850 12 The margin of error for the middle interval which captures 0.95 fraction (95 percent) of all means from samples of size n = 60 is: a 107.8 b 122.8 c 139.3 d 146.8 Next THREE questions are related The mean birth weight of babies is -3400 grams with a standard deviation of: 580 grams. 10 For samples of size n = 60 babies selected from this population, the standard error of the 79.37 74.88 67.39 60.65 11For samples of size n - 60 babies selected from this population, the fraction of sample means 0.8764 0.8502 0.8198 0.7850 12The margin of error for the middle interval which captures 0.95 fraction (95 percent) of all 107.8 122.8 139.3 146.8Explanation / Answer
10)
option B
11)
option C
12)
for 95% CI ; z =1.96
hence margin of error =z*Std error =1.96*74.88 =146.8
option D
std deviation == 580 sample size =n= 60 std error=x=/n= 74.8777Related Questions
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