A number is chosen at random from 1 to 10. Find the probability of selecting a 9 or smaller.

Mathematics

2 answers:

vichka [17]2 years ago

5 0

Answer:

9/10 chance or 0.9

Step-by-step explanation:

very likely to happen since you would have a slim chance of picking 1

Vsevolod [243]2 years ago

4 0

I believe it would be under 8 percent since 9 is lower

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The physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. The d

kozerog [31]

Answer: 49.85%

Step-by-step explanation:

Given : The physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. The distribution of the number of daily requests is bell-shaped ( normal distribution ) and has a mean of 61 and a standard deviation of 9.

i.e. $\mu=61$ and $\sigma=9$

To find : The approximate percentage of lightbulb replacement requests numbering between 34 and 61.

i.e. The approximate percentage of lightbulb replacement requests numbering between 34 and $34+3(9)$ .

i.e. i.e. The approximate percentage of lightbulb replacement requests numbering between $\mu$ and $\mu+3(\sigma)$ . (1)

According to the 68-95-99.7 rule, about 99.7% of the population lies within 3 standard deviations from the mean.

i.e. about 49.85% of the population lies below 3 standard deviations from mean and 49.85% of the population lies above 3 standard deviations from mean.

i.e.,The approximate percentage of lightbulb replacement requests numbering between $\mu$ and $\mu+3(\sigma)$ = 49.85%

⇒ The approximate percentage of lightbulb replacement requests numbering between 34 and 61.= 49.85%

4 0

2 years ago

Which graph comparing time and dollars would be best represented by an exponential function?

Rasek [7]

Answer:

x and y

Step-by-step explanation:

because it make sense

6 0

2 years ago