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Katen [24]
2 years ago
6

Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean of 0◦C and a standard devia

tion of 1◦C. A single thermometer is randomly selected and tested. Find P48 , the 48-percentile. This is the temperature reading separating the bottom 48% from the top 52%.
Mathematics
1 answer:
strojnjashka [21]2 years ago
4 0

Answer:

Step-by-step explanation:

Given that the readings at freezing on a batch of thermometers are normally distributed with a mean of 0◦C and a standard deviation of 1◦C.

When a single thermometer is randomly selected we have the temperature is

N(0,1)

To find 48th percentile

If 48th percentile is c

then f(x<c) = 0.48 where x is the temperature of thermometer

c = 0.05

Hence we have P48 is 0.05

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Roberto decorates retangular signs. One sign is 2/3 foot long and 1/4 foot wide. Another sign is 1/2 long and 1/3 foot wide. It
PilotLPTM [1.2K]

Answer:

It'll take him 1/4 hours to decorate the two signs.

Step-by-step explanation:

In order to know how long Roberto will take to decorate all the signs we need to find their surface area, since they're rectangular their area is given by the product of their dimensions.

First sign:

area1 = (2/3)*(1/4) = 2/12 = 1/6 foot²

Second sign:

area2 = (1/2)*(1/3) = 1/6 foot²

The total area he has to paint is the sum of their individual areas, so we have:

total area = area1 + area2 = 1/6 + 1/6 = 2/6 = 1/3 foot²

To find out how long he'll take to decorate this area we can use a rule of three as shown bellow:

3/4 hour -> 1 foot²

x hour -> 1/3 foot²

x = (3/4)*(1/3) = 1/4 hours

3 0
3 years ago
3 Write a numerical expression to model the words. Subtract 1 from the product of 4 and 5.​
umka21 [38]

Answer:

Hello!

After reading the question you have provided I have come up with the correct numerical expression:

4x5-1

Step-by-step explanation:

To come up with this solution you need to keep in mind some of the terminoloy being used.

The word "subtract" comes from the action of subtraction

The word "product" comes from the action of multiplication

Thus, using those terminologies correctly, you can then deduce that when the question says "the product of 4 and 5" means "multiplying 4 and 5 together".

So you get the first part being 4x5

Then, you add in the last part of "subract 1" from the "product of 4 and 5":

4x5-1

<em>Remember to keep in mind the rule of "PEMDAS"</em>

You always need to keep the multiplication portion of the equation in front of any subtraction, or addition in any given equation.

7 0
2 years ago
Read 2 more answers
If one cup of soy milk contains 4g total fat then how many grams of total fat are in 2 3/4 cups of soy milk
sasho [114]

Answer: 8 6/8

Im almost positive if im wrong please someone correct me.

6 0
3 years ago
Read 2 more answers
Don’t really understand it someone help
stich3 [128]

Answer:

<em>n = 8 or n = −2</em> <em>is the correction solution.</em>

Step-by-step explanation:

As the absolute value equation is given:                                      

                                            | n−3 | = 5

We know either n − 3 = 5 or n − 3 = −5

                                               n − 3 = 5            (First Possibility)

                                          n − 3 + 3 = 5 + 3

                                                       n = 8

                                                n − 3 = -5            (Second Possibility)

                                                      n = -5 + 3

                                                      n = -2

                  <em> So, n = 8 or n = −2</em> <em>is the correction solution.</em>

<em>Keywords: absolute value equation</em>

<em>Learn more about absolute value equation from brainly.com/question/680309</em>

<em>#learnwithBrainly</em>

7 0
3 years ago
A woman bought two tins of milk for 720 Naira how much did she pay for 12 tins​
Kryger [21]

Answer:

$4320

Step-by-step explanation:

12 divided by 2 is 6

720 x 6 = 4320

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3 years ago
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