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mash [69]
3 years ago
10

Can yall please help me

Mathematics
1 answer:
Andru [333]3 years ago
4 0

Yes because it goes up and back down

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Kamal bought a package of 2 oatmeal cookies. The total weight of the cookies was 1 ounce. How much did each cookie weigh?
worty [1.4K]

Answer: 0.5 oz is the weight of one cookie

Step-by-step explanation: If 2 cookies weight 1 oz then 1 cookie weights 0.5 oz.

4 0
3 years ago
I need help with this 20 points
iren2701 [21]

Answer:

I dont understand that sorry

4 0
3 years ago
Read 2 more answers
A market research team thinks that their new ad campaign is better than their old one. They used to be able to sell to 50% of th
andreev551 [17]

Answer:

a. The test statistic is 2 and we conclude that the new ad campaign is not signficantly better.

Step-by-step explanation:

They used to be able to sell to 50% of those who saw their ads. Test if the new campaign is better.

At the null hypothesis, we test is it is the same, that is, the proportion is the same.

H_0: p = 0.5

At the alternate hypothesis, we test if it is significantly better, that is, the proportion is above 50%.

H_1: p > 0.5

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

0.5 is tested at the null hypothesis:

This means that \mu = 0.5, \sigma = \sqrt{0.5*0.5} = 0.5

They take a random sample of 100 potential buyers and find that they convinced 60 of these people to buy their product.

This means that n = 100, X = \frac{60}{100} = 0.6

Test statistic:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{0.6 - 0.5}{\frac{0.5}{\sqrt{100}}}

z = 2

The test statistic is 2.

P-value of the test and decision:

The p-value of the test is the probability of finding a sample proportion above 0.6, which is 1 subtracted the by p-value of z = 2.

Looking at the z-table, z = 2 has a p-value of 0.9772.

1 - 0.9772 = 0.0228.

The p-value of the test is 0.0228 > 0.01, which means that we cannot conclude that the new ad campaign is signficantly better, so the correct answer is given by option A.

5 0
3 years ago
Given f(x) = x^3-3 , find f(-2).<br> Show work please
Tasya [4]
(-2)×3-3=-9
f(x) = -9
8 0
3 years ago
2/3(x+6)=-18 I need the answer help me!!
iragen [17]

Answer:

x = -33

Step-by-step explanation:

2/3(x+6) = -18

multiply (x+6) by 2/3

2/3x + 4 = -18

subtract 4 from both sides

2/3x + 4 - 4 = -18 - 4

2/3x = -22

multiply by 3/2

2/3 x 3/2 x = -22 x 3/2

x = -33

7 0
3 years ago
Read 2 more answers
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