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Fudgin [204]
3 years ago
14

Please help and show your work . Thanks if the picture is upside down turn your device on portrait by locking it so it won't tur

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Mathematics
1 answer:
Bezzdna [24]3 years ago
3 0
So we know that the bag has total 15 cookies, and 1 cookie that does not have any raisin. Finally, the probability that one cookie won't have any raisin is 1/15 or 7 percent. Hope it help!
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Test the claim that the proportion of people who own cats is significantly different than 80% at the 0.2 significance level. The
sattari [20]

Answer:

C. H0 : p = 0.8 H 1 : p ≠ 0.8

The test is:_____.

c. two-tailed

The test statistic is:______p ± z (base alpha by 2) \sqrt{\frac{pq}{n} }

The p-value is:_____. 0.09887

Based on this we:_____.

B. Reject the null hypothesis.

Step-by-step explanation:

We formulate null and alternative hypotheses as  proportion of people who own cats is significantly different than 80%.

H0 : p = 0.8 H 1 : p ≠ 0.8

The alternative hypothesis H1 is that the 80% of the  proportion is different and null hypothesis is , it is same.

For a two tailed test for significance level = 0.2 we have critical value  ± 1.28.

We have alpha equal to 0.2  for a two tailed test . We divided alpha with 2 to get the answer for a two tailed test. When divided by two it gives 0.1 and the corresponding value is ± 1.28

The test statistic is

p ± z (base alpha by 2) \sqrt{\frac{pq}{n} }

Where p = 0.8 , q = 1-p= 1-0.8= 0.2

n= 200

Putting the values

0.8 ± 1.28 \sqrt{\frac{0.8*0.2}{200} }

0.8 ± 0.03620

0.8362, 0.7638

As the calculated value of z lies within the critical region  we reject the null hypothesis.

8 0
2 years ago
3/5a = 5 1/2 rational number equation​
photoshop1234 [79]

Answer:

a = 55/6

Step-by-step explanation:

<u>Solving in steps:</u>

  • 3/5a = 5 1/2
  • 3/5a = 11/2
  • a = 11/2 : 3/5
  • a = 11/2*5/3
  • a = 55/6  or  9 1/6
7 0
3 years ago
Ten plus 6 times a number n is equal to 5 less<br> than the number n.
Gala2k [10]

Answer:

Step-by-step explanation:

10+6n=n-5

6n-n=-5-10

5n=-15

n=-3

7 0
3 years ago
Help me with math please
slava [35]
Both of these lines share the relationship together of being parallel. 
3 0
3 years ago
Consider the graph of the linear equation 2x - 5y = 10.
jeyben [28]

Answer:

x-intercept= (5,0)

y-intercept= (0,-2)

Slope= 2/5

Step-by-step explanation:

7 0
3 years ago
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