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
stira [4]
2 years ago
5

Okay okay help me pleaseeeee what is 3 times negative four ?

Mathematics
1 answer:
lara31 [8.8K]2 years ago
4 0

Answer:

-12

Step-by-step explanation:

You might be interested in
The mean of a set of 5 numbers is 12. One of the numbers in the set is 16. If 16 is removed from the list, what is the new mean?
Reil [10]

The new mean is 11

Step-by-step explanation:

The mean = sum of the numbers ÷ numbers

  • The mean of a set of 5 numbers is 12
  • One of the number is 16
  • We need to find the new mean if 16 is removed from the set of numbers

∵ The set has 5 numbers

∵ The mean of the 5 numbers is 12

- Substitute these values in the rule of the mean above

∴ 12 = sum of the numbers ÷ 5

- Multiply both sides by 5

∴ 60 = sum of the numbers

∵ One of the number is 16

∵ 16 is removed from the set of the number

- Subtract 16 from the sum and the numbers will be four numbers

∵ The new sum = 60 - 16

∴ The new sum = 44

∵ The set has 4 numbers

∴ The new mean = 44 ÷ 4 = 11

The new mean is 11

Learn more:

You can learn more about the mean in brainly.com/question/5069437

#LearnwithBrainly

6 0
3 years ago
Alaska has a coastline of about 6.64 thousand miles. Florida has about 1.35 thousand miles of coast. How many times more does Al
zimovet [89]
Alaska has 4.91851852 thousand miles more than Florida coastline
3 0
3 years ago
Read 2 more answers
A bridge connecting two cities separated by a lake has a length of 5927.261 yd. use the table of facts to find the length of the
alex41 [277]

Answer:

the length of the bridge in miles is 3.37 miles

Step-by-step explanation:

The computation of the length of the bridge in miles is shown below:

Given that

The length is 5927.261 yard

As we know that

1760 yard = 1 mile

So 1 yard = 1 ÷ 1760 mile

For 5927.261 yard, the miles would be

= 5927.261 ÷ 1760

= 3.37 miles

Hence, the length of the bridge in miles is 3.37 miles

5 0
3 years ago
A school bus can carry 66 pupils. how many pupils can ride on 12 such buses
denis-greek [22]
66x12=792 pupils can ride on 12 buses
4 0
3 years ago
A study was conducted to investigate the effectiveness of hypnotism in reducing pain. An SRS of 8 subjects was randomly selected
chubhunter [2.5K]

Answer:

e. No, the p-value is greater than 0.01, so there is insufficient evidence at the 0.01 level to conclude that pain levels are lower after hypnotism.

Step-by-step explanation:

Hello!

The study's objective is to test if hypnotism reduces pain.

A sample of n=8 subjects was taken and the pain level was recorded in each subject before and after being hypnotized.

The variable of interest was determined by calculating the difference of pain level after - before hypnosis. This is a paired sample test and the variable can be determined as:

Xd: Difference between pain level felt after hypnosis and pain level felt before hypnosis of a subject.

The sample average and standard deviation obtained were:

Xd= -3

Sd= 3

And the variable is presumed to be approximately normal.

An approximately normal distribution is enough to conduct a paired sample t-test.

If the claim is that hypnosis reduces pain, then the average pain level after hypnosis should be less than the average pain level before hypnosis, then the average difference is expected to be negative, symbolically: μd < 0

The test will be one-tailed and so will be the p-value.

Remember: The p-value is defined as the probability corresponding to the calculated statistic if possible under the null hypothesis (i.e. the probability of obtaining a value as extreme as the value of the statistic under the null hypothesis).

So first step is to calculate the value of the statistic under the null hypothesis and then you can calculate the p-value.

H₀: μd ≥ 0

H₁: μd < 0

t_{H_0}= \frac{X_d-Mu_{d}}{\frac{S_d}{n} }= \frac{-0-0}{\frac{3}{\sqrt{8} } } = -2.828= -2.83

The DF of the t-test are n-1= 7

Then you can calculate the p-value as:

P(t₇≤-2.83)= 0.0127

The level of the test is α: 0.01

The decision rule is:

If p-value ≤ α, reject the null hypothesis.

If p-value > α, do not reject the null hypothesis.

The p-value > α the decision is to not reject the null hypothesis.

Correct option: e. No, the p-value is greater than 0.01, so there is insufficient evidence at the 0.01 level to conclude that pain levels are lower after hypnotism.

I hope this helps!

5 0
3 years ago
Other questions:
  • For college wrestling competitions, the NCAA requires that the wrestling mat be a square with
    11·2 answers
  • Fred is making two rectangular flower beds.
    9·1 answer
  • Planet A has a circumference of 93,480 miles. Its moon has a diameter that is approximated to be 1/ 8 that of Planet A. Find the
    15·1 answer
  • What is the range of the following numbers: 12,8,17,12,15,18,30
    6·2 answers
  • What is the answer?
    13·1 answer
  • -2/3(1/2)(-6/7)= answere is ?
    10·1 answer
  • Please answer the question that is in the photo attached below
    9·1 answer
  • HELP! THIS IS DUE TODAY, and i will mark brainlest!
    13·1 answer
  • What are 4 similarities between old imperialism and new imperialism?
    5·2 answers
  • Sam found that is the product of 5 and a number is increased by 8 the result is 10 more than the product of 3 and the number wha
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!