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ruslelena [56]
3 years ago
6

State whether the quantity described is a parameter or a statistic and give the correct notation. Average household income for a

ll houses in the US, using data from the US Census.State whether the quantity described is ________a) parameter or b) statistic.
Mathematics
1 answer:
kogti [31]3 years ago
4 0

Answer:

b) statistic.

Step-by-step explanation:

In applied statistical work we rarely have the opportunity to measure entire populations, instead we make inferences about the populations from samples drawn, ideally randomly from the population. We usually want to know averages from whole populations, but use the average from a sample as our best guess at the population average. The unknown population average is called a parameter. The known sample average is called a statistic.

As a matter of convention, most statistical texts use greek symbols for population parameters and the English or Arabic letters for sample statistics. For example, a sample mean is often denoted as x-bar . Population means are denoted with the lower-case greek letter mu μ .

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Andrea's living room floor is a rectangle 12 feet by 15 feet. She wants to buy a rug that is geometrically similar to her living
Sliva [168]

Answer:

180 square feet

Step-by-step explanation:

A rug that is geometrically similar to her room floor is one that has the same size as her room floor.

The floor has dimensions 12 feet by 15 feet.

The area of the floor and hence, the rug is:

A = 12 * 15 = 180 square feet

She should buy a rug that is 180 square feet

7 0
3 years ago
A ball is kicked straight up into the air from a height of 48ft with an initial velocity of 88 ft/s. After how many seconds does
AlladinOne [14]

Answer:

67

Step-by-step explanation:

5 0
3 years ago
Some one please help me out on number 2? Please please.
Nataliya [291]
 I'm not pretty sure but I think it would be y I'm not pretty good with these type of question so don't take my answer correctly but at least we tried I tried like 3 times and I guess I didn't really get it its very confusing but just refer to me as a stand off I'm pushing you to get it right good luck try answering my question on my page please I need to complete it tonight to get extra credit and I'm having a hard time that's why I signed up for brainly,com free for 30 days for my trial. Thank you very much
4 0
3 years ago
Read 2 more answers
PLEASE HELP!!<br> Factor <br> 6x^2-42x-54<br><br> Please show work!
skad [1K]

first, rewrite 54 as 6•9

next, rewrite 42 as 6•7

then, that gets you 6x^2 -6•7x- 6•9

lastly, factor out the common term (6)

and then you get 6(x^2-7x-9)

<u>please mark as brainliet <3</u>

6 0
2 years ago
What is the probability that there is at most one purple marble? 0.100 0.301 0.770 0.971
andriy [413]

The probability that there is at most one purple marble is 0.9701.

<h3>What is the probability  about?</h3>

Probability is a term that connote the possibility of an event or something occurring or not.

Note that it is one that is  based on the level of occurrence that can be seen in a random event.

Based on the fact that there is a  bag that has  eight yellow marbles, nine green marbles, three purple marbles, and five red marbles, the  probability that there is at most one purple marble is 0.9701.

Learn more about This probability case from

brainly.com/question/3729438

#SPJ4

3 0
2 years ago
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