Answer:
Option B is right
Step-by-step explanation:

(One tailed test at 5% significance level)
n =16 and x bar =1.97
s =0.1
Std error of mean = 
Mean diff = 
t statistic =Mean diff/se =-1.2
df =16-1=15
p value =0.124375
(B) do not reject the null because the test statistic (-1.2) is > the critical value (-1.7531).
1/5
1/3
8/100
Three fractions that are less than 40%.
The range for boys is 60 as for girls the range is 80. The median for boys is 90 and for girl 110.
Answer: 24 because you add 5 for every number ex: 9+5=14
I hope this helps you
Parralellogram Area=base×height
P.A.=12×4
P.A.=48