a.
Standardised value = -0.8
calculator command = normalcdf()
probability = 0.2119
b.
The monthly utility bill in a city is normally distributed. The mean is $120 and the...
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 $69. (b) between $84 and S90, and (c) more than $120 (a) The probability that a randomly selected utility bill is less than $69 is _______ (b) The probability that a randomly selected utility bill is between $84 and $90 is _______ (c) The probability that a randomly selected utility...
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 $82 and 5100, and (c) more than $120. (a) The probability that a randomly selected utility bill is less than $67 is _______ (b) The probability that a randomly selected utility bill is between $82 and $100 is _______ (c) The probability that a randomly selected utility...
The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard deviation of $13. Find the probability that a randomly selected utility bill is (a) less than $66, (b) between $81 and $110, and (c) more than $120.
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 $69 B) between $90 and $100 and C) more than $110
(CO 5) The monthly utility bills in a city are normally distributed with a mean of $121 and a standard deviation of $41. Find the probability that a randomly selected utility bill is between $110 and $130.
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 $65, (b) between $87 and $100, and (c) more than $110. (a) The probability that a randomly selected utility bill is less than $65 is _______ (Round to four decimal places as needed.) Use the normal distribution to the right to answer the questions. (a) What percent of the...
The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard deviation of $13. Find the probability that a randomly selected (a) less than $70. (b) between $85 and $100, and (c) more than $110. (a) The probability that a randomly selected utility bill is less than $70 is _______
please answer all three questions. 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 $66, (b) between $81 and $90, and (c) more than $100. (a) The probability that a randomly selected utility bill is less than $66 is (Round to four decimal places as needed.)
Question 2 (4.2 points) In a certain city, the monthly water bill amount is normally distributed with mean 25 and standard deviation 15. A sample of 36 bills was selected. What is the probability that the average water bill amount for the sample was between 28.7 and 30? Write only a number as your answer. Round to 4 decimal places (for example 0.0048). Do not write as a percentage. Your Answer:
2. Chilicheese Games scores arç normally distributed with a mean of 1288 and a standard deviation of (sum of your Mother's and Father's ages). a) Draw a sketch of and label a graph that shows all the information relevant to the problem, including the answer to (b). b) Find the probability that a randomly selected person will have Chilicheese Games score above 1250. Draw a sketch of the distribution and shade in the probability. Also, write out the command you...