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Alinara [238K]
3 years ago
6

The mean household income for a certain state is $70,000 with a standard deviation of $10,000. Assuming a Normal distribution, a

bout 95 percent of all households have an income over what amount?
Answer is 53,551 (How do I get this??)
Mathematics
1 answer:
chubhunter [2.5K]3 years ago
3 0

Answer:

$53,550

Step-by-step explanation:

X ~ N(70,000 , 10,000²)

P(X > t) = 0.95

z = -1.645

-1.645 = (t - 70000)/10000

t - 70000 = -16450

t = 53,550

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Answer: There are 10 largest number of curtains she can make if she wants all the curtains to be exactly the same length.

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Step-by-step explanation:

Since we have given that

Number of yards of red fabric purchased by Jane = 50

Number of yards of gold fabric purchased by Jane = 110

We need to find the largest number of curtains she can make if she wants all the curtains to be exactly the same length.

For this we will find H.C.F. of 50 and 110.

Factors of 50 = 1, 2, 5, 10, 25, 50.

Factors of 110 = 1, 2, 5, 10, 11, 22, 55, 110.

So, Highest common factor of 50 and 110 is 10.

So, there are 10 largest number of curtains she can make if she wants all the curtains to be exactly the same length.

Number of yards of red fabric is given by

\frac{50}{10}=5

Number of yards of gold fabric is given by

\frac{110}{10}=11

Hence, there are 5 red fabrics and 11 gold fabrics that would be used for each curtain.

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