Answer:
There is strong evidence that less than 87% of the orders are delivered in less than 10 minutes.
Decision rule: Reject the null hypothesis if (P-value < level of significance)
Test statistic z=-2.70
Decision: Reject the null hypothesis (0.003<0.010)
Step-by-step explanation:
In this question we have to test an hypothesis.
The null and alternative hypothesis are:

The significance level is assumed to be 0.01.
The sample of size n=80 gives a proportion of p=61/80=0.7625.
The standard deviation is:

The statistic z is then

The P-value is

The P-value (0.003) is smaller than the significance level (0.010), so the effect is significant. The null hypothesis is rejected.
There is strong evidence that less than 87% of the orders are delivered in less than 10 minutes.
Decision rule: Reject the null hypothesis if (P-value < level of significance)
Test statistic z=-2.70
Decision: Reject the null hypothesis (0.003<0.010)
Answer:
jadas practice time is 168 minutes or 2 hours 48 minutes. Diegos practice time is 235 minutes or 3 hours 55minutes hope this helps! have a nice day and good luck with your test!
Step-by-step explanation:
Answer:
y = -
x - 14
Step-by-step explanation:
Slope intercept form: y = mx + b
Isolate the y:
7x + 2y = -28
2y = -7x - 28
y = -
x - 14
QUESTION 1
The given expression is

The greatest common factor is
.
We factor to obtain;

QUESTION 2
The given quadratic equation is

We split the middle term to obtain

Factor by grouping;


Use zero product property;


QUESTION 3
The given system of equation is


If we multiply
by 3, we obtain;

If we multiply
by 4 we obtain;

Adding the last two equations will give us;

The y-variable is eliminated.
Answer:Multiply 3x+4y=−8
by 3. Multiply 7x−3y=6 by 4. Add the resulting equations together.
I can't see it well sorry