the mean value of land and buildings per acre from a sample of farms is $1500 with a standard deviation of $200 the data set has a bell shaped distribution. assume the number of farms in the sample is 73 (a) use the empirical rule to estimate the number of farms whose land and building values per acre are between $1100 and $1900 (b) if 23 additional farms were sampled about how many of these additional farms would you expect to have land and building values between $1100 per acre and $1900 per acre

1-If P(E)= 0.50, P(E or F)= 0.70, and P(E and F)= 0.10. Find P(F) ? 2-Find the probability of the indicated event if ​P(E)equals 0.30 and ​P(F)equals 0.45. Find​ P(E or​ F) if​ P(E and ​F)equals 0.05.?? 3- A bag of 100

I added aquestionas images Q1.: What are the quartiles for the following set of numbers? Q2 What are the quartiles for the following set of numbers? Q3. What is the interquartile range for the following set of numbers?

he student scores in an examination are 35, 30, 25, 26, 40, 44, 36, 54, 64, 65, 75, 60, 70, 85, 90, 92, 46, 52, 63, 52. The daily pocket money (in Rs.) for the same students (respectively) are 110, 110, 120, 140, 150, 140, 150, 210, 200, 140, 210, 240, 300, 260, 500, 270, 310, 550, 450, 500. Find the following:-  (a) Regression of scores on pocket money (b) Regression of pocket money on scores (c) Derive Pearson’s Correlation coefficient from the above two regression coefficients  

Assume the SAT Mathematics Level 2 test scores are normally distributed with a mean of 400 and a standard deviation of 100. Show all work. Just the answer, without supporting work, will receive no credit. (a) Consider all random samples of 64 test scores. What is the standard deviation of the sample means? (Round your answer to three decimal places) (b) What is the probability that 64 randomly selected test scores will have a mean test score that is greater than 425? (Round your answer to four decimal places)