Anational random sample of 654 women aged 20 – 29 years was taken, and each woman's body mass index (bmi) was measured. the sample data had mean bmi ¯=26.8 and standard deviation =7.42 . what is the 95% confidence interval for the mean bmi of all young women?

The required interval is (26.23 , 27.37)

Step-by-step explanation:

The mean is = 26.8

The standard deviation is = 7.42

n = 654

At 95% confidence interval, the z score is 1.96

To find the desired interval we will calculate as:

And

and

= 27.37 and 26.23

So, the required interval is (26.23 , 27.37)

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step-by-step explanation:

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