1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
egoroff_w [7]
2 years ago
11

What is the best way of choosing a sample to statistically represent a population? Why?

Mathematics
1 answer:
lubasha [3.4K]2 years ago
4 0

Answer:

What is a biased sample? How can biased sampling affect the statistical study of a

population?

You might be interested in
I need help. I'm suppose to find the angle of "o"​
yaroslaw [1]

Answer:

54 o

Step-by-step explanation:

I measured it till I got the angle or you could search it up and see what the angle is.

Hope it helped! :)

Please mark brainliest.

8 0
3 years ago
Read 2 more answers
Find the percent change from the first value to the second.<br><br> 50; 39
sertanlavr [38]

Answer:

11 percent

Step-by-step explanation:

if you subtract 50 - 39 = 11

so 11 percent is the change from the first value to the second value.

Hope this helps :)

7 0
3 years ago
Which is the greatest to least, 12 3/4, 12 3/5 and 12.7
Ne4ueva [31]

Answer:

12 3/4, 12.7, 12/5

Step-by-step explanation:

12 3/4 = 12.75

12 3/5 = 12.6

4 0
2 years ago
Read 2 more answers
A drug company is considering marketing a new local anesthetic. The effective time of the anesthetic the drug company is current
vladimir2022 [97]

Answer:

z=\frac{7.1-7.4}{\frac{1.2}{\sqrt{36}}}=-1.5  

Since is a left sided test the p value would be:  

p_v =P(z  

Comparing the p value and the significance level given \alpha=0.1 we see that p_v so we can conclude that we have enough evidence to reject the null hypothesis, and the true mean is significantly lower than 7.4 minutes at 10% of significance

Step-by-step explanation:

Data given and notation  

\bar X=7.1 represent the sample mean    

\sigma=1.2 represent the population standard deviation

n=36 sample size  

\mu_o =7.4 represent the value that we want to test  

\alpha=0.1 represent the significance level for the hypothesis test.  

z would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the true mean i lower than 7.4, the system of hypothesis would be:  

Null hypothesis:\mu \geq 7.4  

Alternative hypothesis:\mu < 7.4  

The statistic is given by

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}} (1)  

Calculate the statistic  

We can replace in formula (1) the info given like this:  

z=\frac{7.1-7.4}{\frac{1.2}{\sqrt{36}}}=-1.5  

P-value  

Since is a left sided test the p value would be:  

p_v =P(z  

Conclusion  

Comparing the p value and the significance level given \alpha=0.1 we see that p_v so we can conclude that we have enough evidence to reject the null hypothesis, and the true mean is significantly lower than 7.4 minutes at 10% of significance

6 0
3 years ago
PLEASE HELP URGENT!!!! LOOK AT THE GRAPH FIRST!
GuDViN [60]

Answer:

a:non linear

y-intercept=1

smallest postive x-intercept:  π

y= 1 and x=0

Step-by-step explanation:

1.a:non linear

("Linear means something related to a line. All the linear equations are used to construct a line. A non-linear equation is such which does not form a straight line. It looks like a curve in a graph and has a variable slope value.")

2.The y-intercept is 1

The point where x is zero(0) is the y-intercept

(0,1)

3. smallest positive x intercept is

so x-intercept is point where y is 0

look at the paterns (pi,0) and (-pi,0) etc..

The smallest positive x-intercept is

(π,0)

4. The greatest value of y is y= 1 and x=0

5 0
3 years ago
Read 2 more answers
Other questions:
  • ALGEBRAIC EXPRESSION 11. Subtract the sum of 13x – 4y + 7z and – 6z + 6x + 3y from the sum of 6x – 4y – 4z and 2x + 4y – 7. 12.
    14·1 answer
  • 4. The stock market goes up more often that it goes down. Assume the probability that the stock market goes up in a randomly sel
    11·1 answer
  • Determine the sample size required to estimate the mean score on a standardized test within 5 points of the true mean with 99% c
    15·1 answer
  • Are these ture or false
    12·2 answers
  • In one version of trail mix, there are 3 cups of peanuts mixed with 2 cups of raisins. In another version of trail mix, there ar
    8·1 answer
  • The function f(x) = x2 is transformed to f(x) = −1.4x2. Which statement describes the effect(s) of the transformation on the gra
    12·1 answer
  • What is the simplified form of 0.2 to the fifth power?
    6·2 answers
  • Which is the better deal? 20-minute spa for $45 or 60-minute spa for $138​
    6·1 answer
  • HURRY PLS
    14·1 answer
  • Which choices are equivalent to the fraction below? Check all that apply.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!