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solmaris [256]
3 years ago
8

Need help on this ????

Mathematics
2 answers:
dsp733 years ago
7 0
Its A because it is the resulting alloy in silver i think
hodyreva [135]3 years ago
3 0

Answer:A

Step-by-step explanati

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A navigator marks three locations on a satellite map as shown. If the distance from Serravalle to San Marino is 982 miles, and t
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                                                                    833
Seravalle____________Chiesanuova______________San Marino
    
             |---------------------------------------------------------------------|
                                          982

so the distance from Chiesanuova to Serravalle is : 
982 - 833 = 149 miles <==
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3 years ago
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Determine what type of observational study is described. Explain. Researchers wanted to determine whether there was an associati
34kurt

Answer:

B. The observational study is a cross-sectional study because information is collected at a specific point in time.

Step-by-step explanation:

1) There are three types of Observational Studies: Case-control, cross-sectional and Cohort.

2) Since the researchers collected information from those 1800 adults at a certain time, then we can call it a cross-sectional study. It does not provide solid results since the research was not done over a period to collect further information. We don't know, for example, much more than what that association deeply mean.

3) If we wonder more, then the researchers would have to track those adults over a given period, i.e. a Cohort would be necessary.

4) Moreover, it's not "retrospective" for virtually every question, always makes us look back somehow, and it does not categorize a kind of observational study.

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3 years ago
Assume that the Poisson distribution applies and that the mean number of aircraft accidents is 9 per month. Find​ P(0), the prob
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Answer: 0.0001

It is unlikely to have a month with no aircraft​ accidents .

Step-by-step explanation:

Given :  Mean number of aircraft accidents = 9 per month

The Poisson distribution formula :-

\dfrac{e^{-\lambda}\lambda^x}{x!}, where \lambda is the mean of the distribution.

If X = the number of aircraft accidents per month, then the probability that in a​ month, there will be no aircraft accidents will be :-

\dfrac{e^{-9}(9)^0}{0!}=0.000123409804087\approx0.0001

Hence, the probability that in a​ month, there will be no aircraft accidents = 0.0001

Since this is less than 0.5 , therefor it is unlikely to have a month with no aircraft​ accidents .

5 0
3 years ago
What factors of 48 are multiples of 4
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4, 8, 12, 16, and 24
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3 years ago
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Part of the population of 7,250 elk at a wildlife preserve is infected with a parasite. A random sample of 50 elk shows that 12
posledela

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1740

Step-by-step explanation:

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3 years ago
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