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Alisiya [41]
3 years ago
15

Choose the correct answer below. A. The first step in the process of statistics is to collect the data. B. Data are typically co

llected from a sample because it is too difficult and expensive to collect data from an entire population. C. When the results from a sample are extended to the​ population, it is called inference. D. If data are not collected​ properly, the conclusions that are drawn will be meaningless.
Mathematics
1 answer:
Elenna [48]3 years ago
3 0

Answer: The following statements are correct :

Data are typically collected from a sample because it is too difficult and expensive to collect data from an entire population.

When the results from a sample are extended to the​ population, it is called inference.

If data are not collected​ properly, the conclusions that are drawn will be meaningless.

The following statement is false: <u><em>The first step in the process of statistics is to collect the data.</em></u>

The first step in the process of statistics is to <em><u>Plan: develop a statistical inquiry that can be answered with aggregation of data.</u></em>

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Three people bought tickets to a movie. One person payed with a $50 bill and received $23 back. If they group used a coupon for
Jlenok [28]

Answer:

Okay so I don't know if this is right but I think the cost of one ticket is $13.16 rounded it would be 13.17.

Step-by-step explanation:

Well first $50 - $23 = 27

Then 25% or 0.25 * $50 = $12.50

Next $12.50 + $27 = $39.50

Then $39.50 ÷ 3 = $13.16 (The 6 keeps repeating)

If thats not the answer then 1 im so sorry and 2 then it might be 11.25?

Im sorry if this is confusing

7 0
2 years ago
Statisticians prefer large samples. Describe briefly the effect of increasing the size of a sample (or the number of subjects in
Flauer [41]

Answer:

Margin of Error decreases

Pvalue decreases

Power increases

Step-by-step explanation:

The margin of error decreases as sample size increases given the same level of confidence, hence, the interval gets narrower.

The margin of error = (Zcritical * σ/√n) ; where, n is the denominator, as the denomination increases, the obtained value will decrease, hence, the margin of error.

When we have a false H0, then we expect a statistical result which will reject H0, with all facts remaining unchanged , increase in sample size n, will lead to decrease in Pvalue, because a lower P value increases the significance of statistical test needed to reject H0.

The power of a fixed level test when the null hypothesis is true, higher power is required to reject the null , increasing n will increase the probability of rejecting H0, by increasing the power of a fixed level test.

8 0
2 years ago
Solve: x+2/x-4&lt;0<br> O _4 O -2 -2 -4
sammy [17]

Answer:

-2<x<4

Step-by-step explanation:

For \frac{x+2}{x-4} < 0, note that either the numerator or denominator is positive and the other must be negative for this inequality to be satisfied.

This means x+2>0 and x-4<0 or x+2<0 and x-4>0.

Lets look at the first scenario (x+2>0 and x-4<0)

x+2>0 and x-4<0

x>-2 and x<4

This means that -2<x<4.

Let’s look at the other scenario (x+2<0 and x-4>0)

x+2<0 and x-4>0

x<-2 and x>4

This means that x must be <-2 and >4 simualtaneously, which is impossible.

Therefore, this only occurs when -2<x<4.

I hope this helps! :)

7 0
2 years ago
What are the values of x in this equation? x^4+12x = 4x^2+3x^3
ICE Princess25 [194]
Xv4+12x = 4x ^23x3 I think
5 0
2 years ago
Read 2 more answers
9.
alex41 [277]

Answer:  B. c = 16d + 18

I'm gonna go with c = 16d + 18

Step-by-step explanation:  letter B or letter D

Answer

5.0/5

6

Brainly User

Days : 1    2    3    4 →→→→→→D(X axis)

Rent a Truck:  34   50  66    82→→→→→→R(Y axis)

As  you can observe from number of Days and Amount to rent a truck , if you rent for a day the price being $ 34 and with increase in Day the rent increases by $ 16.

Plotting the point on graph , found that these points are collinear.

So, we can Represent this relation between days and Rent in equation of two variables representing a line.

Two point formula of line:

 →→Equation of line passing through two points  

So , line representing Days and rent is :

So, the rule representing Days and Rent is:  16 D - R + 18=0

...............................................................................................................................................

The answer is 18

If you subtract 47-29=18

Then if you subtract 47-65=18 the pattern is to add 18

7 0
2 years ago
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