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AlladinOne [14]
3 years ago
6

Select all of the numbers that round to 4.3 when rounded to the nearest tenth.

Mathematics
2 answers:
Anon25 [30]3 years ago
7 0

Answer:

Step-by-step explanation:

A, e, and f

MAXImum [283]3 years ago
3 0

Answer:

the answer is a, e, f,

Step-by-step explanation:

you only round up when its 5 or more, you round down when its 4 or less

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If we accept the null hypothesis when, in fact, it is false, we have: committed a Type II error. a probability of being correct
Greeley [361]

Answer:

Correct option: Type II error.

Step-by-step explanation:

In statistical hypothesis testing two kind of errors can be committed by the researcher.

  1. Type I error: The probability of rejecting a null hypothesis when in fact it is true.
  2. Type II error: The probability of not rejecting a null hypothesis when in fact it is false.

The power of the test is defined as the probability of rejecting a false null hypothesis. It is denoted by <em>β</em>.

Then the probability of Type II error can be defined as:

P (Type II error) = 1 - <em>β</em>.

The power of the test is affected by the significance level<em>.</em>

If the significance level is less than the power is also less.

The significance level is related to the <em>p</em>-value of the test.

So the P(Correct) = 1 - <em>p</em>-value.

7 0
3 years ago
Tom has a 500 gallon pool. He is able to drain it at a rate of 15 gallons per minute.  if the pool still has 170 gallons of wa
Akimi4 [234]

Answer: 22 minutes

Step-by-step explanation: 500-170 means that he drained 330 gallons of water so 330 divided by 15 gallons a minute so you get 22 so it takes 22 minutes to have 170 gallons left in the pool

8 0
3 years ago
Where is 52 located on a number line?
attashe74 [19]

Answer:

Between 50 - 55, or 1 - 100

Step-by-step explanation:

I don't know, give more information?

4 0
3 years ago
Calculate gcd(77, 30) by using the Euclidean algorithm. Find also integers u and v such that 49u + 30v = 1. Furthermore, find su
VladimirAG [237]

Answer:

1. gcd(77,30)=1

77=2*30+17\\30=1*17+13\\17=1*13+4\\13=3*4+1\\4=4*1+0

Since 1 is the last non zero remainder appearing in these equations then, 1 is the gcd of 77 and 30.

2. u=-11, v=18

Using the Euclidean Algorithm we have that

49=1*30+19\\30=1*19+11\\19=1*11+8\\11=1*8+3\\8=2*3+2\\3=1*2+1\\2=1*2+0

Now, we express the remainder as linear combinations of 49 and 30.

1&=3-2\\ &=3-(8-2*3)=3-8+2*3\\&=(11-8)-8+2(11-8)=3*11-4*8\\&=3*11-4(19-11)=7*11-4*19\\&=7(30-19)-4*19=7*30-11*19\\&=7*30-11(49-30)=\\&=18*30-11*49

Then 1=(-11)49+18*30

3. x=18

If 30x\equiv 1\text{mod 77} then

30x=k*77+1 for some k\in \mathbb{Z}.

Then, if k=7,

30x=7*77+1=540\\x=\frac{540}{30}=18

6 0
3 years ago
In a sample of 800 U.S. adults, 218 dine out at a restaurant more than once a week. If two U.S adults are selected at random fro
andre [41]

Answer: 0.074

Step-by-step explanation:

Given : The total number of U.S. adults in the sample = 800

The number of U.S. adults dine out at a restaurant more than once a week = 216

The probability for an adult dine out more than once per week :-

\dfrac{218}{800}

If another person is selected without replacement ,then

Total adults left = 799

Total adults left who dine out at a restaurant more than once a week = 217

The probability for the second person dine out more than once per week :-

\dfrac{217}{799}  

Now, the probability that both adults dine out more than once per week :-

\dfrac{218}{800}\times\dfrac{217}{799}=0.074

3 0
3 years ago
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