HELP ILL MARK AS BRAINLIEST what’s the surface area?

HELP FAST I JUST NEED ANSWER

lukranit [14]

Answer:

449.60 or yellow

Step-by-step explanation:

5 0

3 years ago

When we test Upper H 0: muequals0 against Upper H Subscript a: mugreater than0, we get a P-value of 0.03. a. What would the

Anastasy [175]

Answer:

(a) The null hypothesis will be rejected.

(b) Type I error

(c) The null hypothesis will not be rejected. The error is type II error.

Step-by-step explanation:

The hypothesis provided is:

$H_{0}: \mu = 0\\ H_{a} : \mu > 0$

The p-value of the test obtained is 0.03

(a)

Decision rule for hypothesis testing, based on p-value, states that if the p-value is less than the significance level (α) then the null hypothesis is rejected and vice versa.

The significance level is α = 0.10

Then,

$p-value = 0.03 < \alpha = 0.10$

Thus, the null hypothesis will be rejected.

Conclusion:

The null hypothesis is rejected stating that the value of μ is more than 0.

(b)

If the decision in (a) is an error, i.e. the null hypothesis is rejected when in fact it is true, this type of error is known as type I error.

(c)

The significance level is α = 0.01

Then,

$p-value = 0.03 > \alpha = 0.01$

Thus, the null hypothesis will not be rejected.

Conclusion:

The null hypothesis was not rejected stating that the value of μ is 0.

If this decision is an error, i.e. the null hypothesis was not rejected when in fact it is false, this type of error is known as type II error.

3 0

3 years ago

Helpppppp me with question 4 Thursday pleaseeeeeeeeeeeeeeee

Gennadij [26K]

If x is 0 then I think it would be the 3 to the second power and that is 9. Because 0 + 9 = 9. Correct me if I’m wrong!

8 0

3 years ago

what is sum 18+57_<img src="https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%262%263%5C%5C4%265%266%5C%5C7%268%26

REY [17]

Answer:

18+57= 75

Step-by-step explanation:

Next time use a calculator chuckle nuts

7 0

3 years ago

WILL GIVE THANKS, BRAINIEST, AND 5 STARS! PLEASE HELP!

Andrew [12]

Answer:

a = $\frac{1}{2}$ , b = 5, and $\frac{2b}{a}$ = 20

Step-by-step explanation:

f(x) = - x² + b, x ≤ 0 You would use this equation for f(-2). Since -2 is less than 0.

f(x) = - x² + b, x ≤ 0 ← You can ignore the x ≤ 0 part.

f(-2) = - (-2)² + b Input the value -2 as x. The question states that f(-2) =1.

1 = - (-2)² + b So switch f(-2) with 1 on the left side only.

1 = - (4) + b Simplify. Do the exponents first, so (-2)² = 4.

1 = - 4 + b

<u>+4 +4 </u> Do inverse operations

5 = b

Next,

f(x) = 2ax +3, x > 0 You would use his equation for f(2). Since 2 is greater than 0.

f(x) = 2ax +3, x > 0 ← You can ignore the x > 0 part.

f(2) = 2a(2) + 3 Input the value 2 as x.

f(2) = 4a +3 Simplify. The equation states f(2) = 5. So switch f(2) with 5

5 = 4a +3 on the left side only.

<u>-3 - 3</u> Do inverse operations

2 = 4a

$\frac{2}{4}$ = $\frac{4a}{4}$ Divide 4 on both sides to isolate the variable a

$\frac{2}{4}$ = a Simplify

$\frac{1}{2}$ = a

Then,

The second part says to find $\frac{2b}{a}$

$\frac{2b}{a}$

$\frac{2(5)}{(\frac{1}{2}) }$ Input both the values of a and b

$\frac{10}{\frac{1}{2} }$ Simplify

20.

The answer for a is $\frac{1}{2}$ , the answer for b is 5, and the answer for $\frac{2b}{a}$ is 20.

6 0

3 years ago