Answers
Answer: 1546
gl hope pass
Answer:
area = 345 ft²
Step-by-step explanation:
area = (4 x 21) + (15 x 6) + (9 x 19) = 345 ft²
Related Questions
What do you want to be when you grow up? According to a nationwide survey of a random sample of 1000 kids under the age of 12 some kids want to be a ninja, a dragon keeper, a dancing unicom, and even an octopus. Fifty-five of the 1000 kids want to be a doctor. We would like to use this study to find a 98% confidence interval for the true proportion of kids who want to be a doctor.
a. Identify the parameter of interest.
b. Check if the conditions for constructing a confidence interval for p are met.
C. Find the critical value for a 98% confidence interval. Then calculate the interval
d. Interpret the interval in context
Answers
Using the z-distribution, we have that:
a) The parameter of interest is the proportion of kids who want to be a doctor.b) Since there are more than 10 successes and more than 10 failures in the sample, the conditions are met.c) The critical value is [tex]z = 2.327[/tex]. The interval is (0.0339, 0.066).d) We are 98% sure that the true proportion of kids who want to be a doctor is between 0.0339 and 0.066.Confidence interval of a proportionIn 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]\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 z-score that has a p-value of [tex]\frac{1+\alpha}{2}[/tex].Item a:
We are interested in the confidence interval for the true proportion of kids who want to be a doctor, hence the parameter of interest is the proportion of kids who want to be a doctor.
Item b:
Fifty-five of the 1000 kids want to be a doctor, hence, since there are more than 10 successes and more than 10 failures in the sample, the conditions are met.
Item c:
Fifty-five of the 1000 kids want to be a doctor, hence [tex]n = 1000, \pi = \frac{55}{1000} = 0.055[/tex].98% confidence level, hence[tex]\alpha = 0.98[/tex], z is the value of Z that has a p-value of [tex]\frac{1+0.98}{2} = 0.99[/tex], so the critical value is [tex]z = 2.327[/tex].The lower limit of this interval is:
[tex]\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.05 - 2.327\sqrt{\frac{0.05(0.95)}{1000}} = 0.0339[/tex]
The upper limit of this interval is:
[tex]\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.05 + 2.327\sqrt{\frac{0.05(0.95)}{1000}} = 0.066[/tex]
The interval is (0.0339, 0.066).
Item d:
We are 98% sure that the true proportion of kids who want to be a doctor is between 0.0339 and 0.066.
You can learn more about the use of the z-distribution to build a confidence interval at https://brainly.com/question/25649070
WILL GIVE BRAINLIEST Screen-printing a batch of shirts requires 4 minutes per shirt in addition to 10 minutes of initial set-up time. How long does it take to screen-print a batch of 17 shirts?
Answers
Me das mas información porfavor?
If m∠T = (2x + 85) °, m∠V = (5x + 29) °, and the sum of the measures of the angles is 93 ° , find the measure of each angle.
Answers
Answer: 79 and 14
X would be -3 because (2 x -3 + 85) is 79 and doing it for (5x + 29) would get 14.
which inequality is graphed below?
Answers
Please help me with the question
Answers
Answer:
4p,q+r
4p(q+r)
4pq+4pr
What is the length of line AD?
Answers
1
Step-by-step explanation:
i am very beautiful yes i know it
2. Write 6.07 x 10^7 in standard form
Please help me .
Answers
Answer:
60,700,000
Step-by-step explanation:
⇒10⁷ = 10000000
∴6.07 x10000000
=60,700,000
I need help what would this be????
Answers
Answer:
first we fisson in three regtangles. and we gain 6 cm to 3cm regtangles. they have the same width and length.
and we find their area. we multiplay 6cm and 3cm. the result is 18 cm square. and they have the same area.
lastly we find the value of the picture by find the sum of three regtangels.18cm square+18cm square+18cm square=
54cm square. fainally the answer is 54cm square.
Element X decays radioactively with a half life of 8 minutes. If there are 480 grams of
Element X, how long, to the nearest tenth of a minute, would it take the element to
decay to 14 grams?
y=a(.5)
Answers
Answer:
40.8 minutes
Step-by-step explanation:
Element X decays radioactively with a half life of 8 minutes. If there are 480 grams of Element X, how long, to the nearest tenth of a minute, would it take the element to decay to 14 grams?
The formula to find how long it would take which is the time elapsed is given as:
t = t½ × In(Nt/No)/-In2
t = ?
t½ = 8 minutes
Nt = Amount after the time of decay = 14 grams
No = Original Amount of substances = 480 grams
t = 8 × In(14/480)/-In2
t = 40.796285388407 minutes
Approximately to the nearest tenth = 40.8 minutes
Therefore, it would take the element X, 40.8 minutes to decay to 14 grams
The sanctuary takes out a $12,500 loan to renovate its gift shop. At 5%
simple interest, how much would the sanctuary need to pay back in total after 10 years?
Answers
Answer:
20361.18283
Step-by-step explanation:
p(1+r/100)n
12500(1+5/100)power 10
i hope this answer helps a little bit.
£250 in the ratio 3 : 5
Answers
Answer:
Let 3x and 2x are divided into 250.
Step-by-step explanation:
3x + 2x = 250
⇒ 5x = 250
⇒ x = = 50
∴ 3x = 3 × 50 = 150 and
2x = 2 × 50 = 100
Thus, the required numbers are 150 and 100.
Simplify the expression.
30 - 7m + 5 + 16m
Answers
Answer:
[tex]35 + 9m[/tex]
Step-by-step explanation:
1) Collect like terms.
[tex](30 + 5) + ( - 7m + 16m)[/tex]
2) Simplify.
[tex]35 + 9m[/tex]
Therefor, the answer is 35 + 9m.
Help me please thanks
Answers
Answer:
5/6
Step-by-step explanation:
(-6 - 4) / (3 * -4) [substitute a and b]
-10 / -12 [multiply the values in parenthesis]
5 / 6 [simplify by dividing by the common factor 2]
Answer:
[tex]\frac{5}{6}[/tex]
Step-by-step explanation:
[tex]\frac{b+a}{3a} \\\\\frac{-6-4}{3(-4)} \\\\\frac{-10}{-12} \\\\\frac{5}{6}[/tex]
I went to the grocery store and my subtotal was $78.00. There is a 4.5% sales tax.How much is my total grocery bill including tax
Answers
Answer:
81.51
Step-by-step explanation:
So first you will want to take the percentage of the $78.00.
What we do is multiply 78.00 by 0.045
which is 4.5%
You then get $3.51
Add that to the $78.00:
78.00 + 3.51
= $81.51
The length of a plane is 18.4 metres Lucas buys a scale model plane The scale of the plane is 1 : 23
Answers
Answer:
423.2 is the length of the scale copy
Step-by-step explanation:
18.4 * 23 = 423.2 hope this helps!
At a middle school, 40% of seventh graders have taken
swimming lessons. If there are 250 studnets in the
seventh grade, how many of them have taken swimming
lessons?
Answers
Answer:
100
Step-by-step explanation:
y = % · x
y = 40% · 250
y = 0.40 · 250
y = 100
At birth, a newborn's head is about 25% of its total length. If a baby is 18 inches long, about how many inches is the baby's head?
Answers
Answer:
18 × 0.25 = 4.5
Step-by-step explanation:
25% is multiplying by 0.25
Answer:
4.5 inches long
Step-by-step explanation:
25/100*18
18/4
4.5 inches long
HELP FAST: ( FOR 20 POINTS)
Louis says that the line shown on the scatter plot is a good line of fit for the data because there are two points that lie on the line. Is Louis correct? Explain your reasoning.
Answers
What is the value of x rounded to the nearest hundredth?
ps this is a pythlly therom
Question 2 options:
68
92
54
75
Answers
Step-by-step explanation:
60x60+32x32=4624
✓4624
68
Can someone help me please
Answers
Answer:9/40
Step-by-step explanation:
there is no use of hupotenuse as tanA = p/b
Find the value of x that makes a||b. (2x+25) 55
Answers
Answer:
x= 50
Step-by-step explanation:
2x + 25 = 180 - 55
Translate the sentence into an inequality five substracted from the product of 8 and a number is at most 25 use the variable x for unknown number
Answers
Answer:
8x - 5 ≤ 25
Step-by-step explanation:
Given that the unknown number is x
product of 8 and a number is expressed as 8x
five substracted from the product of 8 and a number is expressed as 8x - 5
Since this expression is at most 25, the inequality sign that you are to use will be ≤ (less than or equal to) since it cannot be greater than 25. Hence the required inequality expression is 8x - 5 ≤ 25
Please answer the question above.
Answers
Answer:113
Step-by-step explanation:
What is the y-intercept of this line?
Answers
Answer:
(0, -3)
Step-by-step explanation:
because at that point is where the line crosses the y axis.
lmk if that works for you !!
How does h(t) change over the interval from t=0 to t 1
Answers
Answer:
h(-1)=-3 h(2)=12 average age of change =12-(-3)2
Step-by-step explanation:
how many tenths are equal to 3/5
Answers
Answer:
8
Step-by-step explanation:
3/5 ×2=8/10
..............
At his after school job, Tommy grossed $4,020 for the year. Based on his
income level, the federal tax rate he'll need to pay is 10%. For his state taxes,
Tommy will need to pay 4.75%. FICA is 7.65%. What is Tommy's net pay for
the year?
A. $3,521.52
O B. $3,119.52
C. $402.00
D. $3,618.00
Answers
Answer: B. $3,119.52
Tommy will need to pay 4.75%. FICA is 7.65%. Tommy's net pay of $3,119.52.
At his after-school job, Tommy grossed $4,020 for the year. Based on his income level, the federal tax rate he'll need to pay is 10%. For his state taxes.
What is the federal tax?
The federal income tax is a tax on annual earnings for individuals, businesses, and other legal entities. All wages, salaries, cash gifts from employers, business income, tips, gambling income, bonuses, and unemployment benefits are subject to a federal income tax.
Tommy will need to pay 4.75%. FICA is 7.65%.
Tommy's net pay of $3,119.52.
To learn more about federal tax visit:
https://brainly.com/question/1775528
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2. Sheila can frame in a room in 5 hours. David can do the same job in 4 hours.
Working together, how long would it take them to frame in a room?
Answers
Answer:
4.5 hours
Step-by-step explanation:
to find the average/middle (how long it would take them when working together) you add both numbers and divide by two
4+5=9
9÷2= 4.5
hope this helps chu <3
The time take by them to the job together is 5 hours.
What is time taken?Time Taken = 1 / Rate of Work If a piece of work is done in x number of days, then the work done in one day = 1/x Total Wok Done = Number of Days × Efficiency.
Efficiency and Time are inversely proportional to each other.
Given that, Sheila can frame in a room in 5 hours. David can do the same job in 4 hours.
We need to find the time taken by them if they work together,
So, the total hours taken by Sheila = 5 hours
So, she will do the work in 1 hour = 1/5 parts
Similarly, for David also, he will do in 1 hour = 1/4
Now, when they are working together in hour = 1/4 + 1/5
= 4+5 / 45 = 9/45 = 1/5
Since, there work in 1 hour = 1/5 units
That mean, they will do the whole work in 5 hours.
Hence, the time take by them to the job together is 5 hours.
Learn more about time taken, click;
https://brainly.com/question/16963199
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Eric bought two jars of peppers and six jars of pickles for $49. Andrew bought three jars of peppers and 5 jars of pickles for $47.50. Find the cost of a jar of pickles.
Answers
Answer:
one jar of pickles is $1.50, 49-47.50 =1.50
Step-by-step explanation:
I need help on this question, I don’t get it so if you could help me
I will really much appreciate it.
Answers
Answer:
C
Step-by-step explanation:
x+x-1-1-1-1-1-1-1 = -x-x-x+1+1+1+1+1+1+1+1+1
2x-7 = -3x +9
5x - 7 = 9
5x = 16
x = 16/5
x= 3⅕
x= 3.2