You’re told that among all 18 sections of BUQU 1230 the average score on the first midterm is 66 and the standard deviation is 15. Answer the following questions: 1. If you took 400 samples, with 20 BUQU 1230 students in each sample, and found the average of each 20-student sample – what would the standard deviation of this sampling distribution be called? Calculate the value for the standard deviation of the sampling distribution. (2 points) 2. Referring to the 400 samples that you’ve taken (with 20 students in each sample), between what two values would you expect to find the middle 50% of […]
developer
Listed below are systolic blood pressure measurements (in mm Hg) obtained from the same woman. Find the regression equation, letting the right arm…
Listed below are systolic blood pressure measurements (in mm Hg) obtained from the same woman. Find the regression equation, letting the right arm blood pressure be the predictor (x) variable. Find the best predicted systolic blood pressure in the left arm given that the systolic blood pressure in the right arm is
Two identical cameras, call them A and B, have their flashes fail 21% and 23% of the time respectively. A photographer selects a camera at random and…
Two identical cameras, call them A and B, have their flashes fail 21% and 23% of the time respectively. A photographer selects a camera at random and uses it to take 10 shots with the flash. What is the probability that the flash failed exactly twice?
PROBLEM 1: A box has a height of 6 cm and a square base with an edge of cm. Create a nicely formatted table that shows the value of , the volume of…
PROBLEM 1: A box has a height of 6 cm and a square base with an edge of cm. Create a nicely formatted table that shows the value of , the volume of the box, and the surface area of the box. Use 1 ≤ ≤ 3, with an increment of 0.25 cm. PROBLEM 2: Burning one gallon of gasoline in your car produces 19.4 pounds of CO2. Calculate the amount of CO2 emitted during a year for the user’s vehicle. You should ask the user for the vehicle’s fuel efficiency in mpg, and total mileage traveled in one year; […]
A radio advertiser wishes to choose a sample of size 100 from a population of 5000 listeners.
A radio advertiser wishes to choose a sample of size 100 from a population of 5000 listeners. After observing that 5, 000 ÷ 50 = 100, he first selects a subject at random from the first 50 names in the sampling frame, and then he selects every 50th subject listed after that one. This method of sampling is called: A) Stratified random sampling. (B) Simple random sampling. (C) Cluster random sampling. (D) Systematic random sampling. A radio advertiser wishes to choose a sample of size 100 from a population of 5000 listeners. He divides the population into five separate groups […]
