Answer:

Step-by-step explanation:
See the attached picture for explanation.
Answer:
a. We reject the null hypothesis at the significance level of 0.05
b. The p-value is zero for practical applications
c. (-0.0225, -0.0375)
Step-by-step explanation:
Let the bottles from machine 1 be the first population and the bottles from machine 2 be the second population.
Then we have
,
,
and
,
,
. The pooled estimate is given by
a. We want to test
vs
(two-tailed alternative).
The test statistic is
and the observed value is
. T has a Student's t distribution with 20 + 25 - 2 = 43 df.
The rejection region is given by RR = {t | t < -2.0167 or t > 2.0167} where -2.0167 and 2.0167 are the 2.5th and 97.5th quantiles of the Student's t distribution with 43 df respectively. Because the observed value
falls inside RR, we reject the null hypothesis at the significance level of 0.05
b. The p-value for this test is given by
0 (4.359564e-10) because we have a two-tailed alternative. Here T has a t distribution with 43 df.
c. The 95% confidence interval for the true mean difference is given by (if the samples are independent)
, i.e.,
where
is the 2.5th quantile of the t distribution with (25+20-2) = 43 degrees of freedom. So
, i.e.,
(-0.0225, -0.0375)
Answer:
-6g + 36 = 12
36 = 12 + 6g
24 = 6g
4 = g
g = 4
Step-by-step explanation:
Answer:
p = 18
Step-by-step explanation:
4(p-7) = 44
The operations in order are to distribute first, 4p - 28 = 44
Isolate the variable, 4p = 72
and divide for the answer, p = 18
P stands for pictures, the number of pictures that can be saved to your photo stream at once is 18.
The pounds of grapes left with seinna is 3.125 or
pounds
<h3><u>
Solution:</u></h3>
Given that Sienna has
pounds of grapes
She eats
pound and gives
pounds to her brother
<em><u>To find: pounds of grapes left with seinna</u></em>
We can find the pounds of grapes left with seinna by subtracting the pounds of grapes she ate and pounds of grapes she gave to brother from the total pounds of grapes she had
Pounds of grapes left with seinna = total pounds of grapes - pounds of grapes she ate - pounds of grapes she gave to brother



<em><u>Substituting the values we get,</u></em>


Thus the pounds of grapes left with seinna is 3.125 or
pounds