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Andrej [43]
4 years ago
13

A recent report stated "Based on a sample of 170 truck drivers, there is evidence to indicate that, on average, independent truc

k drivers earn more than company-hired truck drivers." Does this statement describe descriptive or inferential statistics?
Mathematics
1 answer:
Aliun [14]4 years ago
8 0

Answer:

The given statement describe inferential statistics.    

Step-by-step explanation:

Descriptive Statistic:

  • It helps us to summarize a given data set.
  • It could describe the entire population or a sample from the population.
  • There are two types of descriptive measures: measures of central tendency and measures of variability
  • Central Tendency: Mean, mode, Median
  • Measure of Viability: Standard Deviation, Variance, Range, Interquartile range

Inferential Statistic:

  • It s the process of estimating population parameter with the help of a sample from the population.
  • A random sample from the population is used to describe the population with the help of sample statistic.

Given Scenario:

"Based on a sample of 170 truck drivers, there is evidence to indicate that, on average, independent truck drivers earn more than company-hired truck drivers."

Thus, this is an example of a inferential statistics as a sample was used to estimate the population.

Here,

Sample:

Sample of 170 truck drivers

Population:

All truck drivers.

With the help of a sample, we approximated the population, thus, this statement describe inferential statistics.

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On Friday night, the owner of Chez Pierre in downtown Chicago noted the amount spent for dinner for 28 four-person tables. 95 10
Shalnov [3]

Answer:

(a) The mean is 107.25, median is 106 and mode is 95.

(b) The data set is right-skewed.

Step-by-step explanation:

The sample space of amount spent for dinner for 28 four-person tables is:

S = {95, 103, 109, 170, 114, 113, 107, 124, 105, 80, 104, 84, 176, 115, 69, 95, 134, 108, 61, 160, 128, 68, 95, 61, 150, 52, 87, 136}

There are <em>n</em> = 28 values in the set.

(a)

The mean of this data set is:

\bar x=\frac{1}{n} \sum x=\frac{1}{28} \times3003=107.25

The mean is 107.25.

The data set consists of even number of observations.

The median for an even set of data is the mean of the middle two numbers.

First arrange the data set in ascending order:

52, 61 , 61 , 68 , 69 , 80 , 84 , 87 , 95 , 95 , 95 , 103 , 104 , 105 , 107 , 108 , 109 , 113 , 114 , 115 , 124 , 128 , 134 , 136 , 150 , 160 , 170 , 176

The median is the average value of the 14th and 15th observation.

Median=\frac{14^{th}obs.+15^{th}obs.}{2}=\frac{105+107}{2}=106

The median is 106.

The mode of a data set is the value with the most frequency.

Consider the arranged data set.

52, 61 , 61 , 68 , 69 , 80 , 84 , 87 , 95 , 95 , 95 , 103 , 104 , 105 , 107 , 108 , 109 , 113 , 114 , 115 , 124 , 128 , 134 , 136 , 150 , 160 , 170 , 176

The value 95 is repeated most of the times.

Thus, the mode is 95.

(b)

The value of mean, median and mode are related as follows:

Mean > Median > Mode

This implies that the data is skewed.

In case of a right-skewed data the Mean > Median > Mode.

In case of left skewed data the Mean < Median < Mode.

Thus, the data set is right-skewed.

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3 years ago
Jerome, Kevin, and Seth shared a submarine sandwich. Jerome ate 1/2 of the sandwich, Kevin ate 1/3 of the sandwich, and Seth ate
steposvetlana [31]
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7 0
3 years ago
Help help help help !
larisa [96]

Answer:Its D

Step-by-step explanation:

4 0
3 years ago
Stevie Baker received 15 kg 700 g of sugar. The production manger noticed that they needed 23 kg 100 g of sugar to make the orde
Tju [1.3M]

Answer:

She need <u>7 kg 400 g</u> of sugar more to complete this order of cookies.

Step-by-step explanation:

Given:

Stevie Baker received 15 kg 700 g of sugar. The production manager noticed that they needed 23 kg 100 g of sugar to make the order of cookies she just received.

Now, to find the quantity of sugar she need to complete this order of cookies.

Quantity of sugar Stevie Baker received = 15 kg 700 g.

Quantity of sugar needed to make the order = 23 kg 100 g.

Now, to get the quantity of sugar she need to complete this order of cookies we subtract quantity of sugar Stevie Baker received  from quantity of sugar needed to make the order:

23\ kg\ 100\ g-15\ kg\ 700\ g

=7\ kg\ 400\ g.

Therefore, she need 7 kg 400 g of sugar more to complete this order of cookies.

4 0
3 years ago
How do I do this? Cause I don’t know how. Also please show work. Don’t only say the answer. Whoever shows the work and answer ge
Zarrin [17]
Total sq units of dotted rectangle = 3*5=15sq units

Shaded area= 15-(3*4*1/2+2*5*1/2)

=15-(6+5)

= 15-11

= 4 sq units
7 0
3 years ago
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