Step-by-step explanation:
13×4/9=52/9
answer as improper fraction is 52/9
Step-by-step explanation:
mp=$30
%D=10%=%D=D/M.p×100
10%=D/30$×100=100D=10
DISCOUNT =$3
S.P=$27×6÷100=$1.62+27
<h3> =$28.62</h3>
Answer:


Step-by-step explanation:
For this case we have the following info given:
Weight before diet 180 125 240 150
Weight after diet 170 130 215 152
We define the random variable
and we can calculate the inidividual values:
D: 10, -5, 25, -2
And we can calculate the mean with this formula:

And the deviation with:

And after replace we got:

And the confidence interval for this case would be given by:

The degrees of freedom are given by:

For the 95% of confidence the value for the significance is
and the critical value would be
. And replacing we got:

