MATHEMATICS MIDDLE SCHOOL

PLEASE HELPResults of a blood test are normally distributed with a mean of 6.2 and a standard deviation of 1.5. What is the probability that a patient has a blood test result less than or equal to 8.3?

Answers

Answer 1
Answer:

Answer:

91.92%

Step-by-step explanation:

Given that:

Mean (μ) = 6.2, standard deviation (σ) = 1.5

Z score is a measure in statistics to determine the relationship of a measured value with the mean. It is given by the equation:

z=(x-\mu)/(\sigma)

To calculate the probability that a patient has a blood test result less than or equal to 8.3, we need to calculate the z score of 8.3

For x = 8.3, the z score is:

z=(x-\mu)/(\sigma)=(8.3-6.2)/(1.5) =1.4

From the probability distribution table:

P( x ≤ 8.3) = P(z < 1.4) = 0.9192 = 91.92%

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A magician showed a magic trick where he picked one card from a standard deck. Determine what the probablity is that the catd will be a black queen card?

A cylindrical water tank is being filled with a hose. The depth of the water increases by 1 1/4 ft per hour.How many hours will it take for the water level in the tank to be 3 1/2 ft deep?

Enter your answer as a mixed number in simplest form in the box.

It would really Help :) Thank you

Answers

Expressing the values as improper fractions for easy calculations:
Rate of filling = 5/4 feet per hour
Depth to be reached = 7/2 feet

Time taken = depth / rate
Time = 7/2 x 4/5
Time = 14/5 hours

As a mixed number:
Time = 2 4/5 hours

Answer:

his answer is correct

Step-by-step explanation:

What is the reciprocal of 3 1/4?

Answers

By using the concept of reciprocal of fraction, the result obtained is -

Reciprocal of 3(1)/(4) is (4)/(13)

What is reciprocal of a fraction?

At first, it is important to know about fraction.

Suppose there is a collection of objects and a part of the collection has to be taken. The part which is taken is called fraction. In other words, part of a whole is called fraction.

The upper part of the fraction is called numerator and the lower part of the fraction is called denominator.

For example: (4)/(7) is a fraction. Here, 4 is the numerator of the fraction and 7 is the denominator of the fraction.

Let p be a fraction. Reciprocal of p is a fraction in which if the fraction is multiplied by p, the result obtained is 1 (multiplicative identity)

Here,

3(1)/(4) = (13)/(4)

Let the reciprocal of (13)/(4) be x

(13)/(4) * x = 1\n\n13x = 1* 4\n\n13x = 4\n\nx = (4)/(13)

Reciprocal of 3(1)/(4) is (4)/(13)

To learn more about fraction, refer to the link-

brainly.com/question/17220365

#SPJ2
if u calculate 3 1/4 u would get 13/4

This means to get the reciprocal fraction of 13/4 just turn it upside down like this

13/4= 4/13 so ur answer is 4/13

Write an inequality for
A farmer weighs a dozen chicken eggs. The heaviest egg is 56g.

Answers

The inequality that represents the maximum weight of the dozen eggs of the farmer is; w ≤ 672

How to write inequalities?

We are told that a farmer weighs a dozen chicken eggs.

Now, we see that the heaviest of the weighed dozen chicken eggs is gotten to be 56 g.

Thus, if the heaviest is 56 g, then the maximum weight of all the 12 eggs in a dozen is;

Maximum weight of eggs = 56 * 12

Maximum weight of eggs = 672

Thus, the required inequality is;

w ≤ 672

where w is weight of all 12 eggs.

Read more about Inequalities at; brainly.com/question/25275758

Answer:672

Step-by-step explanation:just multiply a dozen by 56

matties house has 2 stories and an attic. the 1st floor is 8 5/6 feet tall, the second floor is 8 1/2 feet tall and the entire house is 24 1/3

Answers

If the problem is asking how tall the attic is then what you do is add the known measurements for the the other stories which are 8 1/2 ft and add that to 8 5/6 ft which gives you 17 1/3. And you know the overall height of the house is 24 1/3. So simply subtract 17 1/3 from 24 1/3 to get the height of your attic which is 7 feet.

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Answers

9514 1404 393

Answer:

  (a)/(c)=(b)/(d)\ \Leftrightarrow\ (a)/(b)=(c)/(d)

Step-by-step explanation:

The cross products related to the proportions shown here are ...

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Find the least common multiple of the following group of numbers. 14, 94, 300

Answers

This is the answer! Don't tell me how I got that cause I accidentally erase my work but this is the answer: 98700
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