Answer:
95% confidence interval = ( 28.9485, 40.1515 )
Step-by-step explanation:
sample size( n ) = 52
mean value ( x )= 34.55
std ( б ) = 20.12
H0 : <em>u </em>≤ 30
Ha : u > 30 ( claim )
95% confidence interval for mean SPF level ( df = 51 )
= mean value ± 
95% confidence interval = ( 28.9485, 40.1515 )
we cannot reject H0
Answer:
Step-by-step explanation:
I think it would be 70 cm
<span>When you round to the <em>nearest ten</em>, you are looking for numbers like 10, 20, 30, etc. These all have a zero in the ones place. In the case of 34 34 is closest to 30</span>
287,420
Seven percent of 36.00 is 7 barred.