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ra1l [238]
3 years ago
15

Ben is 12 years older than Ishaan. Ben and Ishaan first met two years ago. Three years ago, Ben was 4 times as old as Ishaan. Ho

w old is Ben now?
Mathematics
1 answer:
Stels [109]3 years ago
7 0

Answer:

Ben is 19 Ishaan is 7

Step-by-step explanation:

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The amounts a soft drink machine is designed to dispense for each drink are normally distributed, with a mean of 12.1 fluid ounc
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Answer:

\mu = 12.1\\\sigma = 0.3

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We are supposed to find P(x<11.9)

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z=\frac{11.9-12.1}{0.3}

z=-0.67

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We will use z score formula :

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z=\frac{11.6-12.1}{0.3}

z=-1.67

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We will use z score formula :

z=\frac{x-\mu}{\sigma}

z=\frac{11.9-12.1}{0.3}

z=-0.67

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So, P(11.6<x<11.9)= P(x<11.9)-P(x<11.6)

P(-1.67<z<-0.67)= P(z<-0.67)-P(z<-1.67)

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P(-1.67<z<-0.67)= P(z<-0.67)-P(z<-1.67)

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c)Find the probability that the drink is more than 12.6 fluid ounces

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x= 12.6

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z=\frac{x-\mu}{\sigma}

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Since p value is less than  alpha (0.05)

Answer = No, because the probability that a drink containing more than 12.6 fluid ounces is less than 0.05, this event is not unusual.

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