Statistics
posted by Laurena .
How do you find the proportion bewtween two numbers, for example, proportion of people drink between 18 and 26 gallons of water per week?

Statistics 
MathGuru
If you are using zscores, you need to find two zscores, then find the proportion between the two using a ztable.
Respond to this Question
Similar Questions

MathStatistics
A marketing research company needs to estimate which of two soft drinks college students prefer. A random sample of n college students produced the following 98% confidence interval for the proportion of college students who prefer … 
Statistics: Percentile Rank
A survey of college students was conducted during final exam week to assess the number of cups of coffee consumed each day. The mean number of cups was 5 with a standard deviation of 1.5 cups. The distribution was normal. A. What proportion … 
statistics
A survey of college students was conducted during final exam week to assess the number of cups of coffee consumed each day. The mean number of cups was 5 with a standard deviation of 1.5 cups. The distribution was normal. a. What proportion … 
statistics research
What proportion of adults use between 15 and 23 gallons of gas per week if it is normally distributed with a mean of 16 gallons and a standard deviation of 5 gallons? 
stats
The per capita consumption of coffee by people in the United States in a recent year was normally distributed, with a mean of 24.2 gallons and a standard deviation of 8.1 gallons. What proportion of people in the U.S. drink more than … 
statistics
what is the proportion of people who drink more than 20 gallons of cofffee per year if the mean is 24.2 gallons and the standard deviation is 8.1 gallons 
math
Suppose the weekly use of gasoline for motor travel by adults in North America is approximately normally distributed, with a mean of 14 gallons and a standard deviation of 6 gallons. What proportion of adults use more than 18 gallons … 
statistics
Dr. Snyder teaches a large introductory statistics course. In the past, the proportion of students that receive a grade of A is 0.20. The proportion that receives a B is 0.30. The proportion that receives a C is 0.30. The proportion … 
Statistics
(1) Gluten sensitivity, which is also known as wheat intolerance, affects approximately 15% of people in U.S. Let p be the proportion in a random sample of 800 individuals who have gluten sensitivity. Find the probability that the … 
statistics
Using the categorical data for your team project, conduct a two sample, twotailed hypothesis test for the proportion, with a 0.05 level of significance. Find and interpret each step. H0: H1: Test statistic = Critical value = pvalue …