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miss Akunina [59]
2 years ago
12

IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. A sample of 13 people is selected at rando

m.
Find the probability that the mean IQ of people in the sample is greater than 105
Mathematics
1 answer:
Rufina [12.5K]2 years ago
6 0

Answer:

When describing data, always start with a graphical representation.

 Graphs help identify the overall distribution pattern. Looking at a graph

makes it visually clear how spread a variable is, which values occur most

frequently, and whether or not the distribution is skewed.

 Next, obtain more precise information by providing a numerical summary of

the data using the mean, median, range, five-number summary, and any

other appropriate information.

 Some distributions are so regular that they can be described by a smooth

curve. Real data are represented in a histogram. Curves represent a symbol,

or an abstract version of a distribution.

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Someone help -2/5 x 1/4 x 1/5
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Lol i got u homie!

-0.02

(Sorry if that wasn't a fraction but hopefully this helps)

Step-by-step explanation:

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What is e+f/g in distributive property​
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7 0
2 years ago
1) The population of a town was7652in 2016. The population grows at a rate of 1.6%annually.(a)Use the exponential growth model t
marshall27 [118]

Answer:

1. a) population of the town in 2024 = 8697

2.) the earthquake with a magnitude of 8 is a <u>100 times stronger</u> than an earthquake with a magnitude of 6.

Step-by-step explanation:

1) the population of a town was, N_{0}   = 7652 in 2016.

a) Exponential growth model is given by N(t) = N_{0} e^{kt} where t is the time in years after 2016.

 Year 2016 is when t = 0.

  k = growth rate constant = 1.6% = 0.016

 i) therefore the population of the town in 2024

    = N = N_{0} e^{kt}  = 7652e^{0.016\times8}  = 8697   ( to the nearest whole number)

2.) log (I \times M \times S) = magnitude of earthquake  where I is the Intensity of the earthquake and S is the intensity of a standard earthquake

therefore  I \times M \times S = 10^{magnitude\hspace{0.1cm}of\hspace{0.1cm}earthquake}

therefore \frac{strength\hspace{0.1cm}of\hspace{0.1cm}earthquake\hspace{0.1cm}1 }{strength\hspace{0.1cm}of\hspace{0.1cm}earthquake\hspace{0.1cm}2}  = \frac{10^{8} }{10^{6} }  = 100

 

3 0
3 years ago
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