I don't really understand what I have to do here. Can someone help me please. There's three attachments

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Soloha48 [4]

Answer:

I believe x=18.

7 0

3 years ago

A student in an introductory statistics course investigated if there is evidence that the proportion of

jek_recluse [69]

Complete question:

A student in an introductory statistics course investigated if there is evidence that the proportion of

milk chocolate M&M's that are green differs from the proportion of dark chocolate M&M's that are

green. She purchased a bag of each variety and her data are summarized in the following table:

Milk chocolate- Green:8 Not Green: 33 Total: 41

Dark Chocolate- Green: 4 Not green: 38 Total :42

a) Define the appropriate parameter(s) for this data.nd state the hypotheses for testing if the proportion of green M&M's differs for milk chocolate and dark chocolate M&M's.

b. The p-value is 0.32. Use this p-value to make a decision about these hypotheses with an alpha of 0.05. Be sure to word your decision in the context of the problem. Include an assessment of the strength of your evidence.

Step-by-step explanation:

a. $P_{mc}$ = Proportion of milk chocolate M&M 's that are green

$P_{dc}$ = Proportion of dark chocolate M&M 's that are green

$H_{0} : P_{mc} = P_{dc}$

$H_{0} : P_{mc}$ ≠ $P_{dc}$

b. This p-value provides no evidence that the proportion of green candies differs for milk chocolate and dark chocolate M&M's

5 0

3 years ago

The housing market has recovered slowly from the economic crisis of 2008. Recently, in one large community, realtors randomly

Gwar [14]

Answer:

Step-by-step explanation:

Given that the housing market has recovered slowly from the economic crisis of 2008. Recently, in one large community, realtors randomly sampled 38 bids from potential buyers to estimate the average loss in home value.

s = sample std deviation = 3000

Sample mean = 9379

Sample size n = 38

df = 37

Std error of sample mean = $\frac{s}{\sqrt{n} } \\=486.66$

confidence interval 95% = Mean ± t critical * std error

=Mean ±1.687*486.66 = Mean ±821.003

=(8557.997, 10200.003)

a) If std deviation changes to 9000 instead of 3000, margin of error becomes 3 times

Hence 2463.008

b) The more the std deviation the more the width of confidence interval.

3 0

4 years ago

your class had a few fundraisers this year. if they raised $ 1036.25 from selling candy bars, $524 from dance ticket sales, and

nasty-shy [4]

Amount raised from selling candy bars = $ 1036.25.

Amount raised from dance ticket sales = $524 and

Amount raised from valentines flower sales = $206.58.

In order to find the amount your class raise altogether, we need to add all those amounts.

Total amount = $ 1036.25 + $524 + $206.58 = $1766.83.

Therefore, your class raise $1766.83 altogether.

3 0

4 years ago

Please Help!!!!!! Use what you've learned today about the sum of the interior angles of triangles and quadrilaterals to determin

sveta [45]

Answer:

m = 116

x = 24

y = 76

z = 40

Step-by-step explanation:

For startes the interior angles of triangles always add up to 180 degrees.

That means....

73 + 83 + x = 180

z + m + x = 180

z + y + 64 = 180

Another important fact is that two angles that are intersected by a line in the case 64 and m always add up to 180 degrees.

So m + 64 = 180

Let's start with 73 + 83 + x = 180

If you add 73 and 83 you get 156

x + 156 = 180 then subtract 156 from both sides and

x = 24

Then use m + 64 = 180 subtract 64 from both sides and

m = 116

z + m + x = 180 become

z + 116 + 24 = 180

Add 116 and 24 and you get 140

z + 140 = 180 subtract 140 from both sides and

z = 40

Check to make sure m + x + z = 180

24 + 40 + 116 = 180

z + y + 64 = 180 becomes

y + 40 + 64 = 180

40 + 64 = 104 so

y + 104 = 180 subtract 104 from both sides and

y = 76

Congratulations you have found all of the angles!

6 0

3 years ago