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MakcuM [25]
4 years ago
6

Use the normal distribution to find a confidence interval for a proportion p given the relevant sample results. Give the best po

int estimate for p, the margin of error, and the confidence interval. Assume the results come from a random sample. A 95% confidence interval for p given that p ^ = 0.7 and n = 130 Round your answer for the point estimate to two decimal places, and your answers for the margin of error and the confidence interval to three decimal places. point estimateequals margin of errorequals plus-or-minus The 95% confidence interval is to:__________.
Mathematics
1 answer:
Rama09 [41]4 years ago
7 0

Answer:

SIMPLE go below to see

Step-by-step explanation:

idk im dumb

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Vanessa bakes a rectangular cake that is 9 inches wide,13 inches long and 2 inches high. She removes the cake from the pan to fr
TEA [102]
This is a rectangular cake, and there are 3 measurements, meaning that you are evidently finding volume.

Let's go back, first off, the formula for volume is...

V = L x W x H (Length, Width, Height)
Your measurements are 9 in, 13 in, 2 in.

All you need to do is follow the formula and multiply them.

9 x 2 = 18
18 x 13 = 234 in^{2}

Your answer is C: 234 in^{2}

Hope this helps!
4 0
3 years ago
John Jimenez purchased a $5,000 bond at 90. The annual interest is 5%.
Verdich [7]
1) 5000*90/100=4500
2)5000*0.05=250
3)0.05/(90/100)=5.6%
3 0
4 years ago
Read 2 more answers
A rental hall has 60 tables.
luda_lava [24]

Answer:for the second question/First question that is unsolved it's

350

for the second unsolved question its200

for the third unsolved one its  550

Step-by-step explanation:

The first one is wrong 55%=35

45%=25

35x10=350

25x8=200

add it =550

7 0
3 years ago
State whether the given measurements determine zero, one, or two triangles.
german
Let's apply the law of sine  to calculate angle C
sin(81)/26 =  sin(C)/28
0.1646 = sin(C)/28 and sin(C) =1.063. Sine sin(α) cannot be > than 1, so this triangle is invalid
6 0
3 years ago
Read 2 more answers
The probability that a randomly selected box of a certain type of cereal has a particular prize is 0.20.
MatroZZZ [7]

Answer:

a) the probability is 0.0734 (7.34%)

b) the probability is 0.7382 (73.82%)

c) 10 boxes

Step-by-step explanation:

Since each box is independent of the others and defining the random variable X= number of boxes of cereal purchased without prices until having 2 prices , then X has a negative binomial distribution . Thus

P(X=k)= C(k+r-1,k)*p^k *(1-p)^r

where

p= probability to not obtain a price when a box is purchased = 1- 0.2 = 0.8

C ( ) = combinations

k = number of boxes without prices

r= number of boxes with prices=2

P(X=k) = probability of purchasing k boxes without prices until obtaining r boxes with prices

a) for k= 8 - r = 6

P(X=6)= C(7,6)*0.8^6*0.2^2 = 7*0.8^6*0.2^2 = 0.0734 (7.34%)

b) for k≥9-2=7

P(X≥7) = 1- P(X<7)= 1- Fn(X=7)

where Fn(X) is the cumulative negative binomial distribution. We can calculate it through its relationship with the cumulative binomial distribution Fb(X) that is easily found in tables :

Fn(k=7,r=2,p=0.8) = Fb(k=7,n=k+r=9,p=0.8) = 0.2618

thus

P(X≥7) = 1- P(X<7)= 1- Fn(X=7) = 1-  0.2618 = 0.7382 (73.82%)

c) the expected value E(X) for a negative binomial distribution is

E(X)= p*r/(1-p) = 0.8*2/0.2 = 8 boxes that do not contain prices

thus

n=k+r = 8 + 2 = 10 boxes

6 0
4 years ago
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