Jayne says that 0.45 is equal to 4/10. Is she correct? Explain.
2 answers:
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<h3>Answers:</h3>
- Absolute min = -6
- Absolute max = 6
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Explanation:
The range of x values is which means x = -1 is the smallest and x = 1 is the largest possible.
Similarly the smallest y value is y = -1 and the largest is y = 1.
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Plug in the smallest x and y value to get
f(x,y) = x+5y
f(-1,-1) = -1+5(-1)
f(-1,-1) = -6
Therefore, the absolute min is -6
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Now plug in the largest x and y values
f(x,y) = x+5y
f(1,1) = 1+5(1)
f(1,1) = 6
The absolute max is 6
The probability that a random sample of 12 second grade students results in a mean reading rate of more than 95 words per minute is 0.4582.
Given that the population mean, = 90 wpm
The standard deviation of the population , = 10
Sample size, n = 12
Sample mean, = 95
The reading rate of students follows the normal distribution.
Let z =
=
= 1.732
Probability that the mean reading exceeds 95 wpm = P( >95)
= P(z>1.732)
= 1- P(z<1.732)
= 0.4582
[The value 0.4582 found from the area under the normal curve using tables].
Learn more about Normal Distribution at brainly.com/question/27701525
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