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scoray [572]
3 years ago
6

It costs you $10 to draw a sample size n=1 and measure the attribute of interest. you have a budget of $1,200

Mathematics
1 answer:
kicyunya [14]3 years ago
6 0

<span>a.       </span>Do you have sufficient funds to estimate the population mean for the attribute of interest with a 95% confidence interval 4 units width? Assume that sd= 12

n= {[(Zalpha/2)^2]*[sd]^2}/ se^2

n= (1.96)^2*(12)^2/ (2)^2

n= 138.297 rounded up to 139

<span>There is not enough funds for this one since you’ll need 139 pieces and it costs 10 a piece, you’ll need 1390.</span>

b.      90% confidence interval

n= {[(Zalpha/2)^2]*[sd]^2}/ se^2

n= (1.645)^2*(12)^2/ (2)^2

n=98

There is enough funds since 98 pieces for 10 a piece is equal to 980.

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Ibrahim wants to give each of his six friends 1 2/3 candy bars. How many candy bars does he need to buy?
denis-greek [22]

Answer:

10 candy bars

Step-by-step explanation:

Since each of his friends needs a candy bar, you need to multiply 6 and 1 ⅔ together.

First, convert 1 ⅔ into an improper fraction: this gives us ⁵⁄₃.

Next, multiply ⁶⁄₁ and ⁵⁄₃ together. To do this, you can visualize 6 as ⁶⁄₁ (which is the same thing). Now you have ⁶⁄₁ x ⁵⁄₃.

<u>Simplify:</u>

The 6 in the numerator and the 3 in the denominator cancel out. This gives us ²⁄₁ x ⁵⁄₁ , which is 2 x 5.

2 x 5 = 10

4 0
3 years ago
10 miles = ________feet
lisov135 [29]
10 miles=52800 feet (I know for sure)
7 0
2 years ago
Read 2 more answers
Need help!!!! Asap I’ll Mark Brainly
antiseptic1488 [7]

Answer:

I think 9 and 12 are paraellograms. the others are not paraellograms. dunno if im right. but I tried my best

Step-by-step explanation:

7 0
2 years ago
A parabola with its vertex at (24,10) and its axis of symmetry parallel to the y-axis passes through point (4,290). Write an equ
andrew-mc [135]

Answer:

               Not executable

Step-by-step explanation:

f(x) = a(x - h)² + k      - vertex form of the equation of the parabola with vertex (h, k)

so the equation of parabola with the vertex (24, 10) is  :

f(x) = a(x - 24)² + 10  

the parabola's axis of symmetry parallel to the y-axis and passing through point (4,290) means:  h = 4

<h3> 4 ≠ 24</h3>

That  means you write something wrong in your question.

8 0
2 years ago
Explain your answer !!<br><br> Will give brainlst
Olegator [25]

Answer:

x=-17

y=-2 2/3

Step-by-step explanation:

start with the second one and do substitution

x -6y=-1 add the -6y over to get x alone

x=6y-1 put this into first equation

2(6y-1)-15y=6 distribute

12y-2-15y=6 add like terms

-3y-2=6 add the -2 over

-3y=8 divide by -3

y=-2 2/3 put this back into the first equation that was solved for x

x=6(-2 2/3)-1 distribute

x=-17

5 0
3 years ago
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