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Advocard [28]
3 years ago
15

The probability that a battery will last 10 hr or more is 0.9, and the probability that it will last 15 hr or more is 0.13. give

n that a battery has lasted 10 hr, find the probability that it will last 15 hr or more. (round your answer to three decimal places.)
Mathematics
1 answer:
galben [10]3 years ago
3 0
P(B|A) = P(B)/P(A) = 0.11/0.7 = =.157
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A local eat-in pizza restaurant wants to investigate the possibility of starting to deliver pizzas. The owner of the store has d
Alinara [238K]

Answer:

Read step by step explanation

Step-by-step explanation:

The owner already knows that the limit for the average time delivered pizzas is 38 minutes. So we conclude

1.-The resulting mean from sample data ( x ) ( 27 customers) need to be smaller than 38 minutes, any value of sample above 38 minutes means more time for the delivery action and will indicate a failure for the future project

2.-As sample size is smaller than 30 the test has to be  t-student one tail test to the left

Test hypothesis

Null hypothesis                       H₀                  x  = 38

Alternative hypothesis           Hₐ                  x  <  38

We should test at a significance level α  = 0,05       (α = 5%)

If the result of the test is to accept  H₀  delivery project won´t be implemented, if on the other hand, H₀ is rejected then in the condition of the alternative hypothesis we accept Hₐ the sample indicates that we have a smaller average time than 38 minutes.

4 0
2 years ago
Ahorras $15 por semana para comprar una de las bicicletas mostradas.
jeka94

Answer:

yo ocupo la misma respuestas

Step-by-step explanation:

la tienes o q? soy de higschool Ossining

7 0
2 years ago
PLEASE HELP ME WITH THIS, I WILL DO ANYTHING!!!
vitfil [10]

Mean is the "meanest" because it requires the most work. Add up the values in your data set and divide by the number of terms in the data.

Let x represent attendees at Harry's Hoedown, then

Mean = \frac{Martha's (M) + Shirly's (S)  + Harry's (x) }{3}

41 = \frac{48 + 33 + x}{3}

123 = 48 + 33 + x

123 = 81 + x

42 = x

Answer: 42

5 0
2 years ago
4. Ketisha is practicing for a marathon by running around a track that is 440 yards long. Yesterday she ran around the track 20
adoni [48]
440 yards x 20 = 8800 yards.

8800 yards is equal to 5 miles.
4 0
3 years ago
I need help please and please explain your answer.
lesya692 [45]

Answer:

I think it is B or D

actually it is B i got 100%

Step-by-step explanation:

6 0
2 years ago
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