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serg [7]
3 years ago
12

A flashlight has 7 batteries, 5 of which are defective. If 5 are selected at random without replacement, find the probability th

at all of them are defective.
Enter your answer as a fraction or a decimal rounded to 3 decimal places.


The probability of getting all of them defective batteries is________?
Mathematics
1 answer:
TEA [102]3 years ago
8 0
71.4 % chance I think is your answer. 
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How do solve 1.9x(10.6-2.17)
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Approximately how many of the world’s volcanoes occur along the Ring of Fire? 60 to 70 percent 70 to 80 percent 80 to 90 percent
d1i1m1o1n [39]

Answer:

About 70 to 80%

Step-by-step explanation:

About 70 to 80% of the world total volcanoes occur along the fire ring, The ring of fire is present near the pacific ocean the countries like Chile ,Japan and the island which are present near the pacific ocean are come under the fire ring , the ring of fire is very active in nature this is the reason most of the volcanoes and earthquakes occur here  

6 0
3 years ago
Find the average of 2m,20cm and 95cm give your answer in cm​
stepan [7]

Answer:

The average is:

105 cm

Step-by-step explanation:

1 m = 100cm

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then:

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3 0
3 years ago
A store asked 250 of its customers whether or not they were satisfied with the service. The responses were also classified accor
anyanavicka [17]

Answer:

Correct option: e) a two-way table.

Step-by-step explanation:

In this case the store wants to see whether there is a relationship between the satisfaction level of the customer and their gender.

In statistics when there is a need to analyze or derive a relation between two categorical variables one should use a two-way table.

Categorical variables are qualitative variables that take on specific values that are usually labels. For example, grades obtained in an exam, gender, etc.

In this case the two categorical variables are: Gender and Satisfaction level.

To study the relation between the gender of a customer and their satisfaction level use a two-way table.

 

3 0
3 years ago
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