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MrMuchimi
3 years ago
6

In practice, the most frequently encountered hypothesis test about a population variance is a _____. a. two-tailed test, with eq

ual-size rejection regions b. two-tailed test, with unequal-size rejection regions c. one-tailed test, with rejection region in upper tail d. one-tailed test, with rejection region in lower tail
Mathematics
1 answer:
Bas_tet [7]3 years ago
8 0

Answer:

c. one-tailed test, with rejection region in the upper tail.

Step-by-step explanation:

One tailed test is statistical test in which critical area of distribution is one sided and greater or less than certain value. One tailed test can be left or right sided depending on the population distribution. Rejection region of the one tailed test will determine whether to accept or reject the null hypothesis.

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The sum of two numbers is odd. Can the quotient of the two numbers be an odd number?
Natalka [10]

Answer: No.

Step-by-step explanation:

I guess that here we have the statement:

If the sum of two numbers is odd----> can their quotient be an odd number?

first, for n an integer number, we have that:

an odd number can be written as 2n + 1

an even number can be written as 2n.

The sum of two numbers is only odd if one of them is odd and the other even.

Then we have a number that is 2n and other that is 2k + 1, for n and k integer numbers.

Now, let's see if the quotient can also be an odd number.

One way to think this is:

There is an odd number such that when we multiply it by another odd number, the result is an even number?

no, and i can prove it as:

let 2k + 1 be an odd number, and 2j + 1 other.

the product is:

(2k + 1)*(2j + 1) = 2*(2*k*j + k + j) + 1

and as k and j are integers, also does 2*k*j + k + j, so:

2*(2*k*j + k + j) + 1 is an odd number.

This says that the product of two odd numbers is always odd, then we never can have that the quotient between an even number and an odd number is odd.

4 0
3 years ago
Which expression is equivalent to-6(-2/3+2x)<br> A.-4-12x<br> B.- 4+2x<br> C. 4-12x<br> D. 4 + 12x
irakobra [83]

Answer:

4-12x

Step-by-step explanation:

-6(-2/3 + 2x)

Expand the bracket

12/3 - 12x

4 - 12x

7 0
3 years ago
Read 2 more answers
WILL GIVE BRAINLIEST!
Radda [10]

Answer:

4 ounces of corn and 4 ounces of squash

Step-by-step explanation:

Let S be the no. of ounces of squash

Let C be the no. of ounces of corn

C》2 --> (A)

S》C --> (B)

Total protein 》 3

½C + ¼S》3 --> (C)

Solve A and C simultaneously

½(2) + ¼S = 3

¼S = 2

S = 8

C = 2, S = 8

Solve B and C simultaneously

½S + ¼S = 3

¾S = 3

S = 4

C = 4, S = 4

Three possible extreme combinations

C = 2, S = 8: Total = 10

C = 4, S = 4: Total = 8

Minimum is 8 ounces

4 0
3 years ago
What improper fraction or mixed number is 30/20 in simplest form
True [87]
30/20= 1 and 10/20 in simplest form that is 1 and 1/2
3 0
3 years ago
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*NEED ANSWER ASAP* *GIVING AWAY 10 POINTS*
podryga [215]

Answer: A horseshoe weighs 8.2 ounces The nails in the horseshoe weigh 0.12 ounces.

Step-by-step explanation: B should be your answer have a great day :)

8 0
3 years ago
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