Eighty seven written in standard form would be...
80 + 7 = 87
Good Luck! :)
Answer:
(25.732,30.868)
Step-by-step explanation:
Given that in a random sample of 42 people, the mean body mass index (BMI) was 28.3 and the standard deviation was 6.09.
Since only sample std deviation is known we can use only t distribution
Std error = 

t critical for 99% two tailed 
Margin of error
Confidence interval lower bound = 
Upper bound = 
The answer is <span>a number that can be written as a ratio of two integers.
I hope this helps!</span>