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slavikrds [6]
3 years ago
15

(3/5y^4)^-2 simplify this please

Mathematics
1 answer:
Usimov [2.4K]3 years ago
8 0
(\frac{3}{5}y^4)^{-2}=(\frac{5}{3})^2y^{4\times-2}=\frac{25}{9y^8}
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A test of H0: p = 0.5 versus Ha: p > 0.5 has the test statistic z = 1.15. Part A: What conclusion can you draw at the 5% sign
Nadya [2.5K]

Answer:

Part A: The null hypothesis failed to be rejected.

Part B: The null hypothesis failed to be rejected.

Step-by-step explanation:

We have an hypothesis test with null and alternative hypothesis H0: p = 0.5 versus Ha: p > 0.5, which has the test statistic z=1.15.

Part A: If the significance level is 0.05, the conclusion depends on the P-value.

If the P-value is below 5%, the null hypothesis is rejected.

The P-value for this right-tailed tes and z=1.15 is:

P-value=P(z>1.15)=0.125

The P-value is bigger than the significance level, so the effect is not significant and the null hypothesis is failed to be rejected.

Part B: In this case, the significance level is 0.01 and, as the alternative hypothesis is defined with an unequal sign, the test is two-tailed.

This changes the way we calculate the P-value, as we need to compute the two tails.

The P-value is:

P-value=2P(z>1.15)=0.25

The P-value is bigger than the significance level, so the effect is not significant and the null hypothesis is failed to be rejected.

5 0
3 years ago
Fiona and her friends are playing a game by guessing where a coin will land when it is randomly dropped inside the square shown
azamat

Answer:

Step-by-step explanation:

3 0
3 years ago
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Mia sells t-shirts from a booth at a market. She pays $30 to rent the booth. Each t-shirt costs her $1.50 and she sells them $7.
brilliants [131]
5 t'shirts is the minimum she can sell to reach her goal.
4 0
3 years ago
You buy 3 bags of sand and 5 bags of pea gravel for $26. In a second purchase (at the same prices), you buy 4 bags of sand for $
pickupchik [31]

Answer:

2z and 4y

Step-by-step explanation:

We first have to use the second purchase to figure this out, if 4 bags of sand is $8. We have to divide 8 by 4, which we get $2. We use this to find the bags of pea gravel. Since you bought 3 bags, 3 times 2 is 6. We subtract 6 from 26 leading to 20 dollars. We also buy 5 bags of pea gravel so we have two numbers, 20 and 5. We divide 20 and 5 and we get 4 dollars for 1 bag of pea gravel. If this is not what you meant I apologise.

6 0
3 years ago
Find the product -4(3x-5)
lutik1710 [3]

Answer: -12x+20; x=-\frac{5}{3}

Step-by-step explanation:

-4(3x-5)\\-4(3x)-(-4)5\\-12x-(-20)\\-12x+20\\\frac{-12x}{-12}=\frac{20}{-12}\\  x=-\frac{20}{12} =-\frac{5}{3}

5 0
3 years ago
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