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
lozanna [386]
3 years ago
12

The side length of aDavid is a statistician. He has a sample size of 40 (which he cannot change). What element of his hypothesis

test can he adjust to minimize the probability that he incorrectly rejects the null hypothesis?
the mean of the population
the mean of the sample
the standard deviation of the population
the significance level of the testn equilateral triangle is 6 cm. What is the height of the triangle?
Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
6 0

Answer: D) the significance level of the test

=======================================================

Explanation:

The significance level of the test, also known as "alpha", is the probability of making a type 1 error. A type 1 error is where you reject the null hypothesis but it was true all along.

The null hypothesis is where we test a certain probability distribution (eg: normal distribution). Specifically we gather a sample of values and compute the test statistic. If the probability of getting that test statistic or more extreme is smaller than alpha, then we reject the null. This probability value is known as the p-value.

If you lower the alpha value, then that will make it more likely you do not reject the null. Consider an example where alpha = 0.10 to start with. If you get a p-value of 0.02, then you would reject the null. The same would apply for alpha = 0.05; however, with alpha = 0.01, the p-value is no longer smaller than alpha. At this point we do not reject the null. Your textbook may use the phrasing "fail to reject the null".

Going in the opposite direction, increasing the alpha value will make it more likely to reject the null. Each time you adjust the alpha value, keep the p-value to some fixed number (between 0 and 1).

salantis [7]3 years ago
4 0

Answer:

D on edge

Step-by-step explanation:

You might be interested in
NEED HELP ASAPPP!!! Drag each scenario to show whether the final result will be greater than the original
Lemur [1.5K]

Answer:

Greater than the original = 2, 4

Less than the original = 5

Same as the original = 1, 3

Step-by-step explanation:

Let the original value be x.

1. A $30 increase followed by a $30 decrease.

New value =x+30-30=x, it is same as original value.

2. A 20% decrease followed by a 40% increase.

Afer 20% decrease.

New value =x-\dfrac{20}{100}x=x-0.2x=0.8x

Afer 40% increase.

New value =0.8x+\dfrac{40}{100}(0.8x)=0.8x+0.32x=1.12x, it is greater than original value.

Similarly check the other values.

3. A 100% increase followed by a 50% decrease.

New value =x+\dfrac{100}{100}x-\dfrac{50}{100}(x+x)=x, it is same as original value.

4. A 75% increase followed by a 33% decrease

New value =x+\dfrac{75}{100}x-\dfrac{33}{100}(x+0.75x)=1.1725x, it is greater than the original value.

5. 55% decrease followed by a 25% increase

New value =x-\dfrac{55}{100}x+\dfrac{25}{100}(x-0.55x)=0.5625x, it is less than the original value.

Therefore, Greater than the original = 2, 4, Less than the original = 5, Same as the original = 1, 3 .

6 0
3 years ago
How do you Order the numbers from least to greatest. -7 , -7.75, 1/2, 75%
Serggg [28]

Answer:

-7.75, -7, 1/2, 75%

Hope this helps ☝️☝☝

6 0
3 years ago
A cedar board is 2 inches long and 8 feet long. You will need to cut down the length of the board into 1 1/3 inches long. How ma
My name is Ann [436]

Answer:

You will be able to cut at least 6 pieces

Step-by-step explanation:

4 0
3 years ago
What is the value of x?<br><br><br><br> Enter your answer in the box.<br><br> ...°
jek_recluse [69]
X=111

A 7 sided shape all the interior angles should add to 900 so if you add all the angles given you get 789 then subtract that from 900
3 0
2 years ago
Plz help! The product of three consecutive natural numbers is 336. What are those numbers?​
bekas [8.4K]

Answer:

2x2x2x2x3x7,This is because all of that sum equals the total of

Step-by-step explanation:

2x2x2x2x3x7

8 0
3 years ago
Other questions:
  • X + y is rational, must x and y each be rational
    15·2 answers
  • Someone please help me solve this <br> 40=250(0.89)^x
    7·1 answer
  • Alan, Gil, and Deb's point score in a video game was in the ratio 2:3:4. Deb scored 114,400 points. A. How many points did Gil s
    10·1 answer
  • Can you plz help me with the following questions
    8·1 answer
  • My son drinks 3 cups of milk a day. There are 8 ounces in a
    7·1 answer
  • Simplify the equation 5x + 4 = -16
    13·1 answer
  • Dan's dinner cost $80.40. There was also a 7.5% tax on the dinner. What was the total cost of the dinner? PLZ HELP
    8·1 answer
  • Pls help me asap pls
    7·2 answers
  • HELP PLEASEEEEEEE ASAP I NEED THIS DONE FAST DONT HAVE TIME!!!!!!
    14·1 answer
  • Nadia says the hypotenuse of this right triangle has a length of 73 because the pythagorean theorem states that (28 45) squared
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!