Answer:
The 99% confidence interval for p in this case is (0.3317, 0.5883).
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.
[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In which
z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].
Randomly selects 100 students from the school and asks the President to name each one. The President is able to correctly name 46 of the students.
This means that:
[tex]n = 100, \pi = \frac{46}{100} = 0.46[/tex]
99% confidence level
So [tex]\alpha = 0.01[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.01}{2} = 0.995[/tex], so [tex]Z = 2.575[/tex].
The lower limit of this interval is:
[tex]\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.46 - 2.575\sqrt{\frac{0.46*0.54}{100}} = 0.3317[/tex]
The upper limit of this interval is:
[tex]\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.46 + 2.575\sqrt{\frac{0.46*0.54}{100}} = 0.5883[/tex]
The 99% confidence interval for p in this case is (0.3317, 0.5883).
Choose the following function that belongs to the squaring family.
Oy= x3 + x2
O y=x2-x
Oy= x+22
Oy= X
Find the missing dimension. Use the scale factor 1: 8.
Model length: 6 cm.
Actual length: ?cm.
What is the actual length
Answer:
9cm
Step-by-step explanation:if im wrong sorry
Which expression is equivalent to 6-8 x 65?
Answer:
12-16 X 130
Step-by-step explanation:
Lol its asking for an equivalent expression meaning the same thing soooo... I just multiplied each number by two: 6X2= 12) 8X2=16) 65X2= 130) so the expression will be 12-16 X 65.
ps.
If u get any other answers with a different one than mine it doesnt mean its incorrect because there are infinite equivalent answers for this expression
Someone please help me and thank you:)
Answer:
your answer is F . s=1/6r .
Solve the proportion below.
Answer:
where?????????????????????:/
Answer:
i would but where it is?
You can think of percentages in terms of fractions. Describe how you can think about 10%, 25%, and
75% by using fractions. Consider using tape diagrams to support your explanation
Answer:
You can think percentages as fractions by always using the denominator as 100 and the percentage as the numerator. For example, 10% would be 10/100 or 1/10 and 25% as 25/100 or 1/4 and 75% as 75/100.
WILL GIVE BRAINLIEST
Answer:
the answer it's B we got the same test
PUT THE B
Answer:
mm option a is right
Step-by-step explanation:
bcz there is only 1 zero less in weight of elephant as compared to whale hope it may help u
Mason spends $24 on hot dogs and buns for his graduation picnic. Hot dogs cost $3 per pack and buns cost $2 per packGraph the equation that models this situation, given that represents packs of hot dogs and y represents packs of buns
Answer: i don’t know
Step-by-step explanation: because I don’t know
what is the solution to the equation below -5/4 x + 2/5 equals -13 / 30
Please help look at picture
round to the nearest tenth
Americans eat an average of 100 acres of pizza per year. That is equivalent to 4,356,000 square feet of pizza per year. How is the area expressed using scientific notation?
Answer:
D. [tex] 4.356 * 10^6 [/tex] ft²
Step-by-step explanation:
Scientific notation of a number is expressed in the following form, [tex] a * 10^b [/tex]
Where,
a = decimal number (1 ≤ |a| < 10)
b = the power of 10 whereby the scientific notation is equivalent to the original number.
To express 4,356,000 square feet in scientific notation, do the following:
1. Move the decimal point to the left up to the last non-zero digit = a = 4.356
2. Since we moved the decimal point by 6 decimal places, therefore, b = 6
3. Substitute the values of the variables into
Thus:
4,356,000 = 3. Substitute the values of the variables into
a * 10^b
Thus:
4,356,000 = 4.356 * 10^6
Find 3 ratios that are equivalent to the given ratio. 4:15
Answer: 8:30, 16:60, 32:120
Y-3=2(x+1)
Missing values?
Evaluate the function, find f(-2):
f(x) = 2x^2 +3x
Answer:
B) 2
Step-by-step explanation:
f(-2) = 2 * (-2)^2 + 3(-2)
f(-2) = 2 * 4 - 6
f(-2) = 8 - 6
f(-2) = 2
Which triangles are similar? I WILL GIVE BRAINLIEST!!!
Answer:
A and B!!!
Step-by-step explanation:
Dom buys a stock option for $2500 that pays out 15% annual interest compounded monthly. What is Dom's balance after 6 years?
Answer:
375
Step-by-step explanation:
A male African elephant weighs
7 Tons. A male African lion at the local zoo weighs
1
50
of
the weight of the male African elephant.
How many pounds does the lion weigh?
The lion weighs
pounds.
0.14 Short Tons = 280 pounds
(I dont know how a fat A* Lion weighs 280 pounds, but just go with it-)
The sum of the measures of two angles is 107.3º. One angle has a measure of 51º. What is the measure of the second angle?
Answer:
56.3°
Step-by-step explanation:
If the total is 107.3° just subtract 51° to get 56.3°
How to figure 7% of 2400?
Answer:
168
Step-by-step explanation:
2400 X .07= 168 so 168 is the answer
Jerrold was playing around and created the following expressions for fun. Are they equivalent? How can you tell? 2x + 2 x + 1 + x + 1 2(x + 1)
Hannah collects 16 pounds of paper to recycle. Sid collects 9 pounds of paper to recycle. How many puonds of paper dose Hannah collect than Sid?
Answer:
7
Step-by-step explanation:
16 - 9 = 7
Answer:
7
Step-by-step explanation:
If Hannah collects 16 and Sid collects 9
Hannah has 7 more pounds of paper than Sid
16 - 9 = 7
Which is a better deal 12.4 ounces for $4.99 or 21 ounces for $6.49?
Answer:
Getting 21 ounces for $6.49 is a better deal!
Step-by-step explanation:
4.99 / 12.4 = 0.402419...
6.49 / 21 = 0.30904...
0.4 is larger than 0.30 therefore 0.30 is less and a better deal.
Have an amazing day! ^-^
which of the following are some of the possible soulitions for the inequality -9w < -54
the answer
w < 6
Step by Step
-9w < -54
w < -54/-9
w< 6
Evaluate the expression when a=4 and b=-3.
-a +4b
Answer:
-16
Step-by-step explanation:
-a +4b
By putting the value a = 4 and b = -3
= -(4) + 4 × (-3)
= -4 - 12
= -16 (Ans)
Functions W and Z are both linear functions of x. Which statement comparing the functions is true?
Answer is in the file below
tinyurl.com/wpazsebu
Dylan and Marcella decided to build a fence. Dylan worked alone for 2 hours. Marcella arrived, and they worked 1 hour together. Dylan left, and Marcella worked 1 hour alone. The fence was then ½ done. Individually, it takes Dylan 3 more hours to build a fence than Marcella. How long would it take Dylan and Marcella each to build the fence by themselves?
HELP PLEASE
A popular scale for model trains has a ratio of 3 inch to 20 feet. If a toy train is 4.5 inches long, how long is the real train?
A. 60 ft
B. 24.5 ft
C. 90 ft
D. 30 ft
PLZ HELP ASAP WILL MARK U BRANLYEST... thanks:)
Step-by-step explanation:
Here we are going to use the Pythagoras theorem to get the Hight of the Television
[tex] {42}^{2} - {32}^{2} = x[/tex]
X Being the unknown side
[tex] {42}^{2} - {32}^{2} = 740 \\ x = \sqrt{740} = 27.2[/tex]
So the height is 27.2in
The Are of the screen would be L x B
27.2 x 32 = 870.2 in^2
We will use Pythagoras for the last question also
[tex] {40}^{2} + {32}^{2} = 2624 \\ \sqrt{2624} = 51.23[/tex]
She will need 51.23 in screen size
Helpp worth 20 points!!
write the equation of the line below
Answer:
y = -x -2
Step-by-step explanation:
Answer:
-x - 2 = y
I hope this is correct :P
PLSSSSSSSSSSSSSSSSSSSS HELPPPPPPPPPPPPPPPPPPP RNNNNNNNNNNNNNNNNN