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2 years ago

What is the square root of 2

Mathematics

2 answers:

Oliga [24]2 years ago

6 0

Answer:

1.414

Step-by-step explanation:

square root of two is 1.414

labwork [276]2 years ago

3 0

Answer:

heyy its 1.41421356237

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igor_vitrenko [27]

Answer:

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6 0

3 years ago

A researcher conducts a hypothesis test using a sample of n = 40 from an unknown population. What is the df value for the t stat

aliya0001 [1]

Answer:

Correct option: b 39.

Step-by-step explanation:

A one-sample (or one mean) t-test is applied to test whether the population-parameter is significantly different from some hypothetical value.

The degrees of freedom of the t-test is:

df = n - 1

It is provided that the sample size is, n = 40.

Compute the degrees of freedom as follows:

df = n - 1

= 40 - 1

= 39

Thus, the correct option is b.

3 0

3 years ago

A single card is drawn from a standard 52-card deck. Let D be the event that the card drawn is a black card and let F be the eve

tester [92]

Answer:

The indicated probability of $P(D \cup F')=\frac{25}{26}$

Step-by-step explanation:

Probability of an event E to be;

P(E) = $\frac{Number of events within E}{Total number of possible outcomes}$

As per the given condition:

Total number of possible outcomes = 52 cards.

Let the event be D and F as follows;

D : Drawn card is a black card

F : Drawn card is a 10 card.

Then,

From the given condition:

P(D) = $\frac{26}{52}$ [Out of 52 cards, 26 were black] ,

P(F) = $\frac{4}{52}$ [Out of 52 cards, there are four 10 cards]

For any two events A and B we always have;

$P(A \cup B) = P(A)+P(B)-P(A \cap B)$

Now, we have to find the indicated probability:

$P(D \cup F')=P(D)+P(F')-P(D \cap F')$ ......[1]

First find the P(F');

P(F') =1-P(F) = $1-\frac{4}{52} =\frac{52-4}{52} =\frac{48}{52}$

Also, to find $P(D \cap F')$ .

We use the formula :

For any event A and B independent variable.

$P(A \cap B) =P(A) \cdot P(B)$

then;

$P(D \cap F') =P(D) \cdot P(F') = \frac{26}{52} \cdot \frac{48}{52} =\frac{24}{52}$

Now, substitute these in [1];

$P(D \cup F')=\frac{26}{52} +\frac{48}{52} -\frac{24}{52}$ = $\frac{26+48-24}{52} =\frac{50}{52} = \frac{25}{26}$

Therefore, the probability of $P(D \cup F')=\frac{25}{26}$

3 0

3 years ago

Is the image an example of perpendicular lines?

rodikova [14]

Answer:

There is no image, but perpendicular lines are lines that will eventually intersect, if the lines are straight and not intersecting, then they are parallel.

6 0

3 years ago

7=100z what does z equal?

UNO [17]

Answer:

z = 7/100

Step-by-step explanation:

5 0

3 years ago

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