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Effectus [21]
3 years ago
9

For a hypothesis test of H0: p = 0.35 against the alternative, Ha: p > 0.35, the z test statistic is found to be 2.45. What c

an be said about this finding?
a. The finding is significant at α = 0.05, but not at α = 0.01.
b. The finding is significant at α = 0.01, but not at α = 0.05.
c. The finding is significant at both α = 0.05 and α = 0.01.
d. The finding isn't significant at α = 0.05 and α = 0.01.
e. The finding is inconclusive because we don't know the value of p.
Mathematics
1 answer:
tamaranim1 [39]3 years ago
3 0

Answer:

c? sorry if it's wrong...

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trina is purchasing a new bike. the store is having a 20% off sale, and she has a 10% coupon. the original price of the bike is
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We are given that:
i- The store is having 20% off sale
ii- Trina has a 10% coupon

Therefore, Trina will be having a discount = 20 + 10 = 30% of the bike's price
This means that:
Trina will pay 100% - 30% = 70% of the price

We are given that:
The original price of the bike = <span>$89.75
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dem82 [27]

Answer:

it is 1.31148125 m2

Step-by-step explanation:

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2 years ago
Sweatshirt with new school logo cost 22.50 ,plus tax the tax is over 0.06 for every dollar spend.what is the tax on the sweatshi
coldgirl [10]

Answer:

Step-by-step explanation:

To find tax on something you multiply the base price by the tax percentage.  So if something is 100 dollars and tax is 5 percent (or .05 in decimal form), you would add 5 dollars to the price.  because 100*.05=5.

If we assume 6% as the tax then we multiply 22.50*.06 = 1.35, so you will add 1.35 to the price.  That means the new price is 22.50 + 1.35 = 23.85.

It's just asking for what the tax is though so the answer is 1.35 at 6%.  The question does say the tax is over 6% though, so that means the tax will only go up from there if the tax is over 6%

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2 years ago
X^2+4x+20=12x-5<br><br> Solve this equation
Scrat [10]

Answer:

4 + (or -) 3i

Step-by-step explanation:

Hi!

Alright, so we're going to move all of the variables and constants to one side. Then, using the quadratic formula, we'll find the answer.

1. Move 12x-5 to the left side of the equation by

  a. Subtracting 12x from both sides

  b. adding 5 to both sides.

1: x^2+4x+20-12x+5

2. Group the common terms

  x^2+4x-12x+20+5 --> x^2-8x+25

3. Look at the problem. We can't factor this.

Explanation for why this isn't factorable (you can skip this)

(1) 25 is positive, so its two factors will both be either positive or negative. We're looking for a negative 8, so let's go with negative.

(2) Factors of 25: 1 & 25, 5 &5

Seeing the problem? Ya, none of the factors of 25 sum to eight. So, instead, we're going to use the quadratic formula.

4.  So, the quadratic formula: \frac{-b+-\sqrt{b^2-4ac} }{2a}

Our equation is x^2-8x+25=0

a is the constant in front of the x^2

b is the constant in front of the x

c is the term without any x values

so, a=1, b=-8, and c= 25

Into equation:

\frac{8+-\sqrt{64-4(1)(25)} }{2a}=\frac{8+-\sqrt{64-100} }{2}=\frac{8+-\sqrt{-36} }{2}

8/2 = 4

sqrt(-36) = 6i

6i/2 = 3i (remember, we still have the two in the denominator)

4 + (or -) 3i

8 0
2 years ago
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Multiply. -1/9*(-5/4) Write your answer in simplest form
s2008m [1.1K]

Answer:

\frac{5}{36}

Step-by-step explanation:

  1. -1/9 × -5/4: 9 × 4 = 36, -1 × -5 = 5
  2. Put them together: 5/36
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2 years ago
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