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3 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

Mathematics

2 answers:

ladessa [460]3 years ago

6 0

Answer:

Step-by-step explanation:

C is also possible but it is not purely random and it is not mentioned the mall is in her district.

Juli2301 [7.4K]3 years ago

4 0

Answer: D) Mail a questionnaire to random households.

Step-by-step explanation:

A) You are limited to only listeners of the radio show

B) You are limited to only those that are wiling and able to attend the meeting.

C) You are limited to only shoppers at that particular mall.

D) Randomly selecting households is the least biased method of responses from the district.

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2071 Old Q.No.5 Person's coefficient of skewness for a distribution is 0.4 and its coefficient of variation is 30%. If mode is 8

AlekseyPX

Answer:

$Mean = 100$

$Median = 96$

Step-by-step explanation:

Given

$C_v = 30\%$ --- coefficient of variation

$mode = 88$

$Skp = 0.4$

Required

The mean and the median

The coefficient of variation is calculated using:

$C_v = \frac{\sigma}{\mu}$

Where:

$\mu \to$ mean

So:

$30\% = \frac{\sigma}{\mu}$

Express percentage as decimal

$0.30 = \frac{\sigma}{\mu}$

Make $\sigma$ the subject

$\sigma = 0.30\mu$

The coefficient of skewness is calculated using:

$Skp = \frac{\mu - Mode}{\sigma}$

This gives:

$0.4 = \frac{\mu - 88}{\sigma}$

Make $\sigma$ the subject

$\sigma = \frac{\mu - 88}{0.4 }$

Equate both expressions for $\sigma$

$0.30\mu = \frac{\mu - 88}{0.4 }$

Cross multiply

$0.4*0.30\mu = \mu - 88$

$0.12\mu = \mu - 88$

Collect like terms

$0.12\mu - \mu = - 88$

$-0.88\mu = - 88$

Divide both sides by -0.88

$\mu = 100$

Hence:

$Mean = 100$

Calculate $\sigma$

$\sigma = 0.30\mu$

$\sigma = 0.30 * 100$

$\sigma = 30$

So:

Also, the coefficient of skewness is calculated using:

$Skp = \frac{3 * (Mean - Median)}{\sigma}$

$0.4= \frac{3 * (100 - Median)}{30}$

Multiply both sides by 30

$0.4*30= 3 * (100 - Median)$

Divide both sides by 3

$0.4*10= 100 - Median$

$4= 100 - Median$

Collect like terms

$Median = 100 - 4$

$Median = 96$

6 0

3 years ago

It is 6 kilometers from chris's house to the nearest mailbox. how far is it in meters

mote1985 [20]

6 kilometers = 6000 meters

1 kilometer = 1000 meters
So, 1000 × 6

8 0

3 years ago

What is the product of 710 and 323? 135 11315 21730 3715

Firlakuza [10]

Answer:

I think I answer is 21730 I'm not sure tho

3 0

2 years ago

Read the analogy below. simile : figurative language :: isosceles : triangle what type of analogy is this?

Lena [83]

1) The set of words represented in the first task is definitely ''member and class '' type of analogy. That's pretty easy, it reminds of definitions : simile is one of type of the figurative language and isosceles is one of the types of triangles.

2) What about the next set, I am pretty sure that the gap should be filled with jaywalking : offense :: bottle : container. I think that these words represent consequences, so jaywalking soneer or later will be spotted and it would have become an offence, and bottle will spent the rest of its life in the container.

Hope that helps!

3 0

3 years ago

Michael recorded the number of points his team scores for the first seven basketball games 64 5860 5256 62-54 which box plot cor

natka813 [3]

The correct option is fourth option

Explanations:

From the data, re-arranging in ascending order, the median of the data is 58.

The upper quartile is 62, while the lower quartile is 54

From the options, only the 4th options represent a box plot of median 58, upper quartile of 62 and lower quartile of 54. This makes it the correct option

8 0

1 year ago