Answer:
y = 36
Step-by-step explanation:
4(9) = 4 x 9 = 36
Answer:
Rate of change (slope) = - 6
Step-by-step explanation:
(-1-5)/(1-0) = -6/1 = -6
Answer:
The 99% confidence interval would be given by (0.286;0.562)
Step-by-step explanation:
Information given:
represent the families owned at least one DVD player
represent the total number of families
represent the estimated proportion of families owned at least one DVD player
In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 99% of confidence, our significance level would be given by
and
. And the critical value would be given by:
The confidence interval for the mean is given by the following formula:
If we replace the values obtained we got:
The 99% confidence interval would be given by (0.286;0.562)
Answer:
Table A is correct
Step-by-step explanation:
All you have to do is multiply the hours by 5 to get the answer.
Table B is adding not multiplying.
<em>Can I please have BRAINLIEST?</em>
Answer:
The person invested $3500 at 7% and $2500 at 5%
Step-by-step explanation:
We can say that
because the investment is equal both in one as in another, where x is the income from the investment.
Solving the equation we have:

Then to get the incomes:
At 7%: 
And at 5%: 
Finally we can demonstrate the answer because the income at 7% + income at 5% are 3500+2500=$6000