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nikklg [1K]
3 years ago
15

The average time an individual reads online national news reports is 49 minutes. Assume the standard deviation is 16 minutes and

that the times are normally distributed. What is the probability someone will spend no more than 30 minutes reading online national news reports
Mathematics
1 answer:
Olin [163]3 years ago
3 0

Answer:

0.118 is the probability someone will spend no more than 30 minutes reading online national news reports.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 49 minutes

Standard Deviation, σ = 16 minutes

We are given that the distribution of  time an individual reads is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

P(no more than 30 minutes)

P( x \leq 610) = P( z \leq \displaystyle\frac{30 - 49}{16}) = P(z \leq -1.1875)

Calculation the value from standard normal z table, we have,  

P(x \leq 30) = 0.118 = 11.8\%

0.118 is the probability someone will spend no more than 30 minutes reading online national news reports.

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Susan currently has an account balance of $1,336.60. Her initial deposit on the account was $820 and it earned 4.5% simple inter
emmasim [6.3K]

The correct option will be :   14 years

<u><em>Explanation</em></u>

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Here, I= 516.60, P= 820, r=4.5% = 0.045

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3 years ago
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Answer:

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Step-by-step explanation:

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Verify that the given equation is an example of associative property of addition or not:

We have the associative property of addition

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Comparing the equation (1) and(2)  we have the given equation is in associative property

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