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mrs_skeptik [129]
3 years ago
15

The average time spent sleeping (in hours) for a group of medical residents at a hospital can be approximated by a normal distri

bution, with mean of 6.1 hours and standard deviation of 1.0 hour. Let x represents a random medical resedent selected at the hospital. Find P(x < 5.3).
Mathematics
1 answer:
nika2105 [10]3 years ago
8 0
First we calculate the z-score for this situation.
Z=\frac{X- \mu}{\sigma} = \frac{5.3-6.1}{1} = -0.8
Finding <em>P</em>(x < 5.3) is the same as finding <em>P</em>(<em>z</em> < -0.8).  Using a table of standard normal distribution and z-scores we see that the probability is 0.21186.
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Write an expression for the product of 11 and w
Nadya [2.5K]

Answer:

11 * w

Step-by-step explanation:

"product" in math means "multiply". "The product of 11 and w" is "the multiplication of 11 and w".

Write the expression:

The Multiplication: *

11 and w: 11 * w

11 * w is your answer.

~

3 0
3 years ago
What number is 100000 more than 702083
Tomtit [17]
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3 years ago
Ellen is excited to learn how to ski. She went to White Peaks Mountain, rented a pair of skis for $45, and took 4 hours of group
Vikentia [17]

Answer:

x=30h

Step-by-step explanation:

First, you need to figure out how much she actually paid for lessons, so you need to subtract 45 from 165.

165-45=120

Now you know she paid 120 dollars in total for lessons.

You know she took four hours of lessons, so you divide 120 by 4.

120/4=30

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Now you can form an equation.

Since you know it takes $30 per hour of lessons, it will be 30h.

x is the full amount of money paid

You don't need to add 165-45 to your equation because not everyone will need to rent skis when they come to White Peaks.

Hope this helps!

6 0
2 years ago
How to multiply and divide integers
Artyom0805 [142]

You multiply or divide integers just as you do whole numbers, except you must keep track of the signs. To multiply or divide signed integers, always multiply or divide the absolute values and use these rules to determine the sign of the answer.

<span>
When you multiply two integers with the same signs, the result is always positive. Just multiply the absolute values and make the answer positive.</span>

<span>Positive x positive = positive 
Negative x negative = positive</span>

<span>When you multiply two integers with different signs, the result is always negative. Just multiply the absolute values and make the answer negative.</span>

<span>Positive x negative = negative
Negative x positive = negative</span>

<span>When you divide two integers with the same sign, the result is always positive. Just divide the absolute values and make the answer positive.</span>

<span>Positive ÷ positive = positive
Negative ÷ negative = positive</span>

<span>When you divide two integers with different signs, the result is always negative. Just divide the absolute values and make the answer negative.</span>

<span>Positive ÷ negative = negative
Negative ÷ positive = negative</span>

6 0
3 years ago
Read 2 more answers
Corey claims that when 1/10 is multiplied by a negative number, the result will always be less than 1/10. Do you agree with Core
DerKrebs [107]
I agree because when you multiply a positive number such as 1/10 by any negative number the result will always be negative.
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