Answer:
Step-by-step explanation:
-7 + 47=40
Answer:
4
Step-by-step explanation:
because it is the most # of pictures
Answer:
12 toppings
Step-by-step explanation:
There's a 60 cent difference in the base price, and the price of toppings is a 5 cent difference, so it would take 60/5 or 12 toppings to make up the difference. r, you can make a chart. Or you can do algebra and solve an equation:
6.75 + .75 x = 6.15 + .8x where x is the number of toppings. Subtract 6.15 from both sides.
.60 + .75x = .8 x Subtract .75x from both sides
.60 = .05x Divide both sides by .05
Answer:
The indicated confidence interval for the difference between the two population means is (-1.5159, 7.5159)
Step-by-step explanation:
Let the drying times of type A be the first population and the drying times of type B be the second population. Then
We have small sample sizes
and
, besides
,
,
and
. Therefore, the pooled
estimate is given by

The 99% confidence interval for the true mean difference between the mean drying time of type A and the mean drying time of type B is given by
, i.e.,

where
is the 0.5th quantile of the t distribution with (11+9-2) = 18 degrees of freedom. So
, i.e.,
the indicated confidence interval for the difference between the two population means is (-1.5159, 7.5159)
90 × 7 = 630 , it's not hard, it's easy