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ELEN [110]
3 years ago
9

Eric put several CD's in a case. Four CDs are country, six are rap and ten are pop. If Eric picks one CD from the case without l

ooking, what is the probability that he will pick a country CD?
Mathematics
1 answer:
Olenka [21]3 years ago
7 0

Answer:

4:20

Step-by-step explanation:

The answer should be 4:20

1. Total the number of CD's

2. 4:20 are country  

3. Therefore out of 20 CD's there's a probability that 4 will be chosen.

Hope This Helps <3

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Round 968 the the nearest hundredth
Readme [11.4K]

Answer:

The nearest hundredth would be in the second decimal place. It would be 967.99 as you would round down to get there.

Step-by-step explanation

7 0
2 years ago
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
If a diameter is 12.5 cm, what is the radius?
Jlenok [28]

Answer:

6.25

Step-by-step explanation:

8 0
2 years ago
a deli employee can make a sandwhich in 6 minutes.she works for 84 minutes.how many sandwhiches can she make
Leni [432]

Answer:

14

Step-by-step explanation:

84/6

6 0
3 years ago
Read 2 more answers
Find the area of the sector. Use 3.14 for the value of 1. Round your answer to the
Arlecino [84]

Answer:

52

Step-by-step explanation 1/3 i believe it would be 1/6 of 314 which would be 52 and 1/3.

3 0
2 years ago
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