Answer:
D)
90 percent confidence interval for the proportion of all students in her district who read at least 1 book last month
(0.52846 , 0.75166)
Step-by-step explanation:
<u><em>Step:-1</em></u>
Given that the random sample size 'n' = 50
The sample proportion
90 percent confidence interval for the proportion of all students in her district who read at least 1 book last month
<u><em>Step(ii):-</em></u>
Level of significance = 0.90
Z₀.₉₀ = 1.645
(0.64 -1.645(0.06788) , (0.64 + 1.645(0.06788)
(0.52846 , 0.75166)
<u><em>Final answer:-</em></u>
90 percent confidence interval for the proportion of all students in her district who read at least 1 book last month
(0.52846 , 0.75166)
Answer:
Step-by-step explanation:
I think it's 5(x+2y-3)
Answer: cost of T-shirts = $18
cost of sweatshirt = $42
Step-by-step explanation:
Let the cost of T-shirts be x
Let the cost of sweatshirt be y
The information given in the question can be used to form an equation that'll be:
9x + 3y = 288 ...... i
1x + 6y = 270 ........ ii
Multiply equation i by 1
Multiply equation ii by 9
9x + 3y = 288 ....... iii
9x + 54y = 2430 ..... iv
Subtract iii from iv
51y = 2142
y = 2142 / 51
y = 42
The cost of a sweatshirt is $42
Since Carson sells 1 T-Shirt and 6 sweatshirts for 270$. The cost of a t-shirt will be:
= 270 - 6(42)
= 270 - 252
= $18
Answer:
In 8 minutes, she can jog 4000 feet.
Step-by-step explanation:
Davita jogs 2000 feet in 4 minutes.
Her rate is 2000/4 or 500 feet per minute.
500*8 = 4000
The easiest way to solve this is by making simple addition problems from all of the sets of numbers.
4 + 4 = 8
4 + (-4) = 4 - 4 = 0
-4 + (-4) = -4 - 4 = 8
4 + 0 = 4
So, you know that B: 4 degrees Celcius and -4 degrees Celcius have a sum of 0 degrees Celcius.
