The average sale price of one-family houses in the United States for January 2016 was $250,000...
The average sale price of one-family houses in the United States for January 2016 was $250,000 and the standard deviation is $48,500. Assume the distribution is normal. Using the Empirical Rule, find the price that is higher than 84% of the rest.
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The average sale price of one-family houses in the United States
for January 2016 was $250,000...
The Average sales price of single-family houses in Charlotte is $210,000 with a standard deviation of...
The Average sales price of single-family houses in Charlotte is $210,000 with a standard deviation of $35,000. A random sample of 49 single-family houses in Charlotte is selected. Let x bar represent the mean sales price of the sample. 1. Find the mean and standard deviation of x bar ,i.e, u x bar and o x bar . 2. What is the probability that the sample mean sales price x bar is more than $220,000?
3. A real estate company is interested in assessing the average sale price of houses in...
3. A real estate company is interested in assessing the average sale price of houses in Santa Cruz. After collecting data for 600 home sales in 2015, they compute that the mean sale price was 672,492 dollars with a standard deviation of 97,200 dollars a) What is the standard deviation of the mean sale price? b) Test the hypothesis that the mean sale price is $600,000 against the alternative that it not at the 95% confidence level. c) Test the...
1aThere are approximately one billion smartphone users in the world today. In the United States, the...
1aThere are approximately one billion smartphone users in the world today. In the United States, the ages of smartphone users between 13 to 55 approximately follow a normal distribution with approximate mean and standard deviation of 37 years and 8 years, respectively.Using the 68-95-99.7 Rule, what percent of smartphone users are greater than 53 years old? bThere are approximately one billion smartphone users in the world today. In the United States, the ages of smartphone users between 13 to 55...
an economics professor randomly selected 100 millionaires in the united states. the average age of these...
an economics professor randomly selected 100 millionaires in the united states. the average age of these millionaires was 54.8 years with a standard deviation of 7.9 years. what is the 95% confidence interval for the mean age, of all united states millionaires. A.) A confidence interval for the mean using a table value from the standard normal distribution B.) A confidence interval for the mean using a table value from the t distribution C.) A confidence interval for a proportion...
According to the Census Bureau, in October 2016, the average house price in the United States...
According to the Census Bureau, in October 2016, the average house price in the United States was $27,258. 8 years earlier, the average price was $22,108. What was the annual increase in the price of the average house sold?
According to the Census Bureau, in October 2016, the average house price in the United States...
According to the Census Bureau, in October 2016, the average house price in the United States was $27,458. 5 years earlier, the average price was $22,508. What was the annual increase in the price of the average house sold? Multiple Choice 3.65% 4.87% -3.90% 4.46% 4.06%
According to the Census Bureau, in October 2016, the average house price in the United States...
According to the Census Bureau, in October 2016, the average house price in the United States was $28,558. 5 years earlier, the average price was $22,008. What was the annual increase in the price of the average house sold? Multiple Choice 5.88% 4.81% -5.08% 5.35% 6.42%
An economist wants to find a 90% confidence interval for the mean sale price of houses...
An economist wants to find a 90% confidence interval for the mean sale price of houses in a state. How large a sample should she select so that the estimate is within $3500 of the population mean? Assume that the standard deviation for the sale prices of all houses in this state is $31,500. answer is 221 but unsure of how to get this answer
4. (10pts) The average price for a gallon of gas in the United States is $2.60....
4. (10pts) The average price for a gallon of gas in the United States is $2.60. Assume that the population standard deviation is $0.40. Suppose we take a sample of 100 gas stations. What is the probability that the mean price per gallon of gas from our sample of gas stations is within ±$0.06 of the population mean?PLEASE SHOW ALL WORK
Question 15 4 pts In October 2003 the mean sale price of a single family home...
Question 15 4 pts In October 2003 the mean sale price of a single family home in Santa Clara County was $683,008. We are interested in determining whether the prices in Cupertino were greater than the county average. We randomly survey 10 Cupertino single family home sale prices in the same time period and find a mean of $703,329 and a standard deviation of $21,403. At a 5% level of significance, the correct decision is: Reject Ho Do not reject...
3. A real estate company is interested in assessing the average sale price of houses in Santa Cruz. After collecting data for 600 home sales in 2015, they compute that the mean sale price was 672,492 dollars with a standard deviation of 97,200 dollars a) What is the standard deviation of the mean sale price? b) Test the hypothesis that the mean sale price is $600,000 against the alternative that it not at the 95% confidence level. c) Test the...
According to the Census Bureau, in October 2016, the average house price in the United States was $27,258. 8 years earlier, the average price was $22,108. What was the annual increase in the price of the average house sold?
Question 15 4 pts In October 2003 the mean sale price of a single family home in Santa Clara County was $683,008. We are interested in determining whether the prices in Cupertino were greater than the county average. We randomly survey 10 Cupertino single family home sale prices in the same time period and find a mean of $703,329 and a standard deviation of $21,403. At a 5% level of significance, the correct decision is: Reject Ho Do not reject...
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