Furnace repair bills are normally distributed with a mean of 267 dollars and a standard deviation of 20 dollars. If 64 of these repair bills are randomly selected, find the probability that they have a mean cost between 267 dollars and 269 dollars.
0.5517 |
||
0.2119 |
||
0.2881 |
||
0.7881 |
Furnace repair bills are normally distributed with a mean of 267 dollars and a standard deviation...
13) Furnace repair bills are normally distributed with a mean of 265 dollars and a standard deviation of 20 dollars. If 64 of these repair bills are randomly selected, find the probability that they have a mean cost between 265 dollars and 267 dollars. A) 0.2119 B) 0.7881 C) 0.2881 D) 0.5517
Furnace repair bills are normally distributed with a mean of 265 dollars and a standard deviation of 25 dollars. If 100 of these repair bills are randomly selected, find the probability that they have a mean cost between 265 dollars and 267 dollars. O 0.7881 O 0.2119 0.5517 O 0.2881
Furnace repair bills are normally distributed with a mean of 265 dollars and a standard deviation of 25 dollars. If 100 of these repair bills are randomly selected, find the probability that they have a mean cost between 265 dollars and 267 dollars. O 0.2119 O 0.2881 O 0.7881 O 0.5517
QUESTION 12 Provide an appropriate response. Furnace repair bills are normally distributed with a mean of 271 dollars and a standard deviation of 25 dollars. If 100 of these repair bills are randomly selected, find the probability that they have a mean cost between 271 dollars and 273 dollars. 0.2881 0.7881 0.5517 @ 0.2119
Furnace repair bills are normally distributed with a mean of $273 & a standard deviation of $25. Examples of 100 furnace repair bills are obtained and the mean cost of each sample is recorded. Find the standard deviation of the mean costs. Write the formula you we use, then put the numbers into it then give the answer.
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 _______
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...
Question 6 3 pts The number of violent crimes committed in a day possesses a distribution with a mean of 3.5 crimes per day and a standard deviation of 4 crimes per day. A random sample of 100 days was observed, and the mean number of crimes for the sample was calculated. Describe the sampling distribution of the sample mean. shape unknown with mean = 3.5 and standard deviation = 0.4 shape unknown with mean = 3.5 and standard deviation-4...
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...