n - sample size N-population size f-freqgueney Chapter 2 Chapter 5 high -low number classes Probability...
1)A sample of size 50 will be drawn from a population with mean 73 and standard deviation 8. Find the 19th percentile of . Group of answer choices 73.8 75.8 75.7 72.0 2)Use technology to solve the following problem: A certain car model has a mean gas mileage of 33 miles per gallon (mpg) with a standard deviation A pizza delivery company buys 48 of these cars. What is the probability that the average mileage of the fleet is between...
A sample proportion is calculated from a sample size of 418. How large of a sample would we need in order to decrease the standard error by a factor of 4? Question 3 options: 1) 12,958 2) 7,106 3) 836 4) 6,688 5) 1,672 Question 4 (1 point) Historically, 71.15% of packages delivered by UPS are on time. Suppose 121 deliveries are randomly selected for quality control. What is the probability that greater than 74.74% of the deliveries were on...