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Sav [38]
3 years ago
6

What if Evelyn's dance class started at 11:00 am and lasted 1 hour and 25 minutes? At what time would her class end?describe how

this problem is different from problem 1
Mathematics
2 answers:
pishuonlain [190]3 years ago
7 0

Answer:

12:25

Step-by-step explanation:

You would add 1 to 11, and then add 25 to 00. You should get 12 and 25, as 1+1=12 and 0+25=25. Remember that 0 plus anything would always equal the greater number's value. I hope this helps and is correct!

andre [41]3 years ago
6 0

Answer:

it would end at 12:25 pm. We can not see problem one.

Step-by-step explanation:

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Round to the nearest tenths 2.52_______?<br /><br />
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3 years ago
Q6. (15 points) IQ examination scores of 500 members of a club are normally distributed with mean of 165 and SD of 15.
melamori03 [73]

Answer:

a) 0.8413

b) 421

c) P_{95} = 189.675

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 165

Standard Deviation, σ = 15

We are given that the distribution of  IQ examination scores is a bell shaped distribution that is a normal distribution.

Formula:

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

a) P(IQ scores at most 180)

P(x < 180)

P( x < 180) = P( z < \displaystyle\frac{180 - 165}{15}) = P(z < 1)

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

P(x < 180) = 0.8413 = 84.13\%

b) Number of the members of the club have IQ scores at most 180

n = 500

\text{Members} = n\times \text{P(IQ scores at most 180)}\\= 500\times 0.8413\\=420.65 \approc 421

c) P(X< x) = 0.95

We have to find the value of x such that the probability is 0.95

P( X < x) = P( z < \displaystyle\frac{x - 165}{15})=0.95  

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

P(z < 1.645) = 0.95

\displaystyle\frac{x - 165}{15} = 1.645\\\\x = 189.675  

P_{95} = 189.675

8 0
3 years ago
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