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AleksandrR [38]
3 years ago
8

What is 1+1 lol cool question hehe

Mathematics
1 answer:
Alex787 [66]3 years ago
7 0

Answer:

2

Step-by-step explanation:

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The length of time taken on the SAT for a group of students is normally distributed with a mean of 2.5 hours and a standard devi
son4ous [18]

Answer:

Step-by-step explanation:

Since the length of time taken on the SAT for a group of students is normally distributed, we would apply the formula for normal distribution which is expressed as

z = (x - u)/s

Where

x = length of time

u = mean time

s = standard deviation

From the information given,

u = 2.5 hours

s = 0.25 hours

We want to find the probability that the sample mean is between two hours and three hours.. It is expressed as

P(2 lesser than or equal to x lesser than or equal to 3)

For x = 2,

z = (2 - 2.5)/0.25 = - 2

Looking at the normal distribution table, the probability corresponding to the z score is 0.02275

For x = 3,

z = (3 - 2.5)/0.25 = 2

Looking at the normal distribution table, the probability corresponding to the z score is 0.97725

P(2 lesser than or equal to x lesser than or equal to 3)

= 0.97725 - 0.02275 = 0.9545

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3 years ago
What fraction is equal to 65%?
umka21 [38]

Answer:

65/100

Divide is by 100.

4 0
3 years ago
You own a lawn care business. in a typical week you drive 600 miles and use 40 gallons of gasoline. gasoline costs $1.25 per gal
iVinArrow [24]
42.50$ ?        21 times 1.25  plus 13 times 1.25 = 42.50?  
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3 years ago
Please help me!! :(((
Oliga [24]
Answer is below..............

7 0
3 years ago
What is 10,000 x 1000,000
Hitman42 [59]

Answer:

10000000000

Step-by-step explanation:

10000000000

:) Hope this helps

4 0
2 years ago
Read 2 more answers
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