Question

The monthly utility bills in a city are normally​ distributed, with a mean of ​$100 and...

The monthly utility bills in a city are normally​ distributed, with a mean of ​$100 and a standard deviation of ​$14. Find the probability that a randomly selected utility bill is​ (a) less than ​$67​, ​(b) between ​$84 and ​$90​, and​ (c) more than ​$120.

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Given mean = 100 and SD = 14

a) the probability that a randomly selected utility bill less than ​$67 is

b) the probability that a randomly selected utility bill is lies between $84 and $90 is

c)  the probability that a randomly selected utility bill more than ​$120 is

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The monthly utility bills in a city are normally​ distributed, with a mean of ​$100 and...
The monthly utility bills in a city are normally​ distributed, with a mean of ​$100 and a standard deviation of ​$12. Find the probability that a randomly selected utility bill is​ (a) less than ​$65​, ​(b) between ​$84 and ​$100​, and​ (c) more than ​$130.
The monthly utility bills in a city are normally​ distributed, with a mean of ​$100 and...
The monthly utility bills in a city are normally​ distributed, with a mean of ​$100 and a standard deviation of ​$16. Find the probability that a randomly selected utility bill is​ (a) less than ​$67​, ​(b) between ​$80 and ​$100​, and​ (c) more than ​$110. ​(a) The probability that a randomly selected utility bill is less than ​$67 is nothing. ​(Round to four decimal places as​ needed.) ​(b) The probability that a randomly selected utility bill is between ​$80 and...
The monthly untily bills in a city are normally distributed with a mean of $100 with...
The monthly untily bills in a city are normally distributed with a mean of $100 with standard deviation of $15. find the probability that a randomly selected utility bill is less than $65? between $80 and $90? and more than $100?
According to a report by Scarborough Research, the average monthly household cellular phone bill is $73....
According to a report by Scarborough Research, the average monthly household cellular phone bill is $73. Suppose local monthly household cell phone bills are normally distributed with a standard deviation of $22. What is the probability that a randomly selected monthly cell phone bill is less than $95? What is the probability that a randomly selected monthly cell phone bill is between $62 and $84? According to a report by Scarborough Research, the average monthly household cellular phone bill is...
17 (CO 3) A survey indicates that shoppers spend an average of 22 minutes with a...
17 (CO 3) A survey indicates that shoppers spend an average of 22 minutes with a standard deviation of 16 minutes in your store and that these times are normally distributed. Find the probability that a randomly selected shopper will spend less than 20 minutes in the store 18(CO 3) The monthly utility bills in a city are normally distributed with a mean of $121 and a standard deviation of $23. Find the probability that a randomly selected utility bill...
A research company reports that the average monthly household cell phone bill in Indiana is $120...
A research company reports that the average monthly household cell phone bill in Indiana is $120 with a standard deviation of $14. Assuming the distribution of household cell phone bills is normally distributed find the following probabilities: The probability that a randomly selected household in Indiana has a cell phone bill of more than $100. The probability that a randomly selected household in Indiana has a cell phone bill of $110 to $150. Suppose you are asked to take a...
Electricity bills in a certain city have a mean 87.73. Assume the bills are normally distributed...
Electricity bills in a certain city have a mean 87.73. Assume the bills are normally distributed with standard deviation $12.27. A sample of 61bills was selected for an audit. Find the 48 percentile for the sample mean.
For question 10, assume that adults have IQ scores that are normally distributed with a mean...
For question 10, assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability that a randomly selected adult has an IQ of the following: 10. Find the area under the standard normal curve for the following: • Less than 115. • Greater than 131.5 • Between 90 and 110 • Between 110 and 120
Assume that adults have IQ scores that are normally distributed with a mean of 100 and...
Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability that a randomly selected adult has an IQ between 84 and 116.
Assume that adults have IQ scores that are normally distributed with a mean of 100 and...
Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15. For a randomly selected adult, find the probability. Round scores to nearest whole number. 1.) Prob. of IQ less than 85 2.)Prob. of IQ greater than 70 3.) Prob. of randomly selected adult having IQ between 90 and 110.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT