We collected a sample of the prices of new homes. The mean of our sample is $255,000, with a standard deviation of $19,000. Calculate the z-scores of each of the given prices. Determine if the they are usual or unusual. Round up each z-score to two decimals.
(a) $275, 000
(b) $230,000
(c) $210,000
(d) $290,000

We collected a sample of the prices of new homes. The mean of our sample is...
If the sample mean of some data is 175 and the sample standard deviation is 15 then the z-score of the data value 149 is considered as which of the following (a) an unusual score (b) a very unusual score (c) none of these (d) a usual score
4. IQ scores are measured with a test designed so that the mean is 105 and the standard deviation is 16. Consider the group of IQ scores that are unusual. What are the z scores that separate the unusual IQ scores from those that are usual? What are the IQ scores that separate the unusual IQ scores from those that are usual? (Consider a value to be unusual if its z score is less than minus−2 or greater than 2.)...
Assume the selling prices of homes in a particular community follow a normal distribution with a mean of $289, 000 and a standard deviation of $43,300. Complete parts a through c. a. Determine the range of selling prices in this community that includes one standard deviation around the mean. The range is from $________ to $_________. (Type integers or decimals. Use ascending order.) b. Determine the range of selling prices in this community that includes two standard deviation around the...
We find a sample of people and we weigh each person. The distribution of their weights is positively skewed with a mean of 157 and a standard deviation of 47. If this distribution is transformed into z-scores, what will be the resulting shape, mean, and standard deviation of the new distribution? For a population with µ = 75 and σ = 10 find the z-score corresponding to the following raw scores X = 70 X = 77 X = 75
Suppose that prices of a certain model of new homes are normally distributed with a mean of $150,000. Find the percentage of buyers who paid less than $153,264 if the standard deviation is $1600. Answer in decimal form.
This Question: 5 pts A particular group of men have heights with a mean of 176 cm and a standard deviation of 6 cm Richard had a height of 196 cm. a. b. c. What is the positive difference between Richard's height and the mean? How many standard deviations is that [the difference found in part (a)? Convert Richard's height to a z score. d. f we consider "usual heights to be those that convert to z scores between -2...
3 .A particular group of men have heights with a mean of 183 cm and a standard deviation of 6 cm. Bill had a height of 188 cm. a. What is the positive difference between Bill's height and the mean? b. How many standard deviations is that [the difference found in part (a)]? c. Convert Bill's height to a z score . d. If we consider "usual" heights to be those that convert to z scores between minus 2 and...
A particular group of men have heights with a mean of 177 cm and a standard deviation of 7 cm. JohnJohn had a height of 193 cm. a.a. What is the positive difference between JohnJohn's height and the mean? b.b. How many standard deviations is that [the difference found in part (a)]? c.c. Convert JohnJohn's height to a z score. d.d. If we consider "usual" heights to be those that convert to z scores between minus−2 and 2, is JohnJohn's...
A particular group of men have heights with a mean of 177 cm and a standard deviation of 7 cm. Charley had a height of 181 cm. a. What is the positive difference between Charley's height and the mean? b. How many standard deviations is that [the difference found in part (a)]? c. Convert Charley's height to a z score. d. If we consider "usual" heights to be those that convert to z scores between minus−2 and 2, is Charley's...
A realtor is analyzing recent sale prices of 3 bedroom homes in her area. The mean sale prices of recent sales was $310 ,000 with a standard deviation of $20,000. Assuming no information concerning the shape of the distribution is known, what percentage of homes sold between $270,000 and $350,000? approximately 68% approximately 95% at least 89% at least 75%