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
Maurinko [17]
3 years ago
14

If you flip a coin 24 times, how many times would you predict that the coin lands on tails?

Mathematics
1 answer:
olya-2409 [2.1K]3 years ago
5 0

Answer:

I predict 12 times

I hope this helped;;

You might be interested in
a bag contains 5 blue, 8 red, and 7 green marbles. a marble is selected at random. find the probability the marble is not red
Alchen [17]
3/5 is the same as 12/20 which is not red over total
6 0
3 years ago
Read 2 more answers
The screenshot is there please answer fast no explanation needed.
Vanyuwa [196]

The given equation is,

y=4x-5

The graph of the function is shown below with the table of values use to plot the graph

Hence, the correct option is Option A.

3 0
1 year ago
Read 2 more answers
Area of octagon with radius 5?
Montano1993 [528]
I got 200 from a octagon with the diameter of 10
3 0
3 years ago
Someone pls explain/help ?? This is confusing
sladkih [1.3K]

Answer:

I can't see the picture

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
The standard deviation of math test scores at one high school is 16.1. A teacher claims that the standard deviation of the girls
Elanso [62]

Answer:

\chi^2 =\frac{22-1}{259.21} 166.41 =13.482

p_v =P(\chi^2

In order to find the p value we can use the following code in excel:

"=CHISQ.DIST(13.482,21,TRUE)"

If we compare the p value and the significance level provided we see that p_v >\alpha so on this case we have enough evidence in order to FAIL reject the null hypothesis at the significance level provided. And that means that the population deviation is not significantly lower than 16.1 at 1% of significance.

Step-by-step explanation:

Notation and previous concepts

A chi-square test is "used to test if the variance of a population is equal to a specified value. This test can be either a two-sided test or a one-sided test. The two-sided version tests against the alternative that the true variance is either less than or greater than the specified value"

n=22 represent the sample size

\alpha=0.01 represent the confidence level  

s^2 =12.9^2=166.41 represent the sample variance obtained

\sigma^2_0 =16.1^2 =259.21 represent the value that we want to test

Null and alternative hypothesis

On this case we want to check if the population deviation is smaller than 16.1 (that's equivalent to check if the population variance is lower than 259.21:

Null Hypothesis: \sigma^2 \geq 259.21

Alternative hypothesis: \sigma^2

Calculate the statistic  

For this test we can use the following statistic:

\chi^2 =\frac{n-1}{\sigma^2_0} s^2

And this statistic is distributed chi square with n-1 degrees of freedom. We have eveything to replace.

\chi^2 =\frac{22-1}{259.21} 166.41 =13.482

Calculate the p value

In order to calculate the p value we need to have in count the degrees of freedom , on this case 21. And since is a left tailed test the p value would be given by:

p_v =P(\chi^2

In order to find the p value we can use the following code in excel:

"=CHISQ.DIST(13.482,21,TRUE)"

Conclusion

If we compare the p value and the significance level provided we see that p_v >\alpha so on this case we have enough evidence in order to FAIL reject the null hypothesis at the significance level provided. And that means that the population deviation is not significantly lower than 16.1 at 1% of significance.

3 0
3 years ago
Other questions:
  • Factor the quadratic expression completely. 12x^2+17x+6=
    5·1 answer
  • Please help me on this question
    15·2 answers
  • Factor the GCF: −12x4y − 9x3y2 + 3x2y3
    15·1 answer
  • Two in 1 more points​
    10·2 answers
  • Simplify 1/3(-32.48-14.02)
    8·1 answer
  • Lateral and surface area of prisms?
    6·1 answer
  • Solve the problem using long division
    12·1 answer
  • 9x^2+ 8x + 3 = 0 solve using quadratic formula
    12·1 answer
  • Please help<br> 10 points
    11·2 answers
  • PLEASE HELP!!!!!!!!!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!