mean 3.1948 and standard deviation 0.0889‚ with a sample size of 25. X (bar) = 3.948‚ s =0.0889‚ n = 25 Use a one-sample t-test Conditions/assumptions for a t-test •Random sample- our survey was a random sample of 25 stations •Normal distribution –we are assuming gasoline prices are normally distributed Null hypothesis: The mean regular unleaded gas prices for your region is the same as that in the study µ 0 = 3.16 Alternate hypothesis: The mean regular unleaded gas prices for your
Premium Statistics Normal distribution Statistical hypothesis testing
Mathematics): Survival distributions Age-at-death random variable T0 – age-at-death (lifetime for newborn) random variable To completely determine the distribution of T0 ‚ we may use (for t ≥ 0)‚ (1) (cumulative) distribution function: F0 (t) = Pr(T0 ≤ t) (2) survival function: s0 (t) = 1 − F0 (t) = Pr(T0 > t) (3) probability density function: f0 (t) = F0 (t) = (4) force of mortality: µ0 (t) = d F0 (t) dt f0 (t) −s0 (t) = 1 − F0 (t) s0 (t) Requirements: (1) For distribution function‚
Premium Probability theory Random variable Cumulative distribution function
the top 5% of the credit scores in order to qualify for a home loan. What is the minimum credit score required in order to qualify for a home loan? Round your answer to the nearest whole number. Answer Selected Answer: 538 . Question 3 .0 out of 5 points The drying rate in an industrial process is dependent on many factors and varies according to the following distribution. What is the probability that a drying time will be at most 5 minutes? Answer Selected Answer:
Premium Random variable Probability theory Normal distribution
Types of Variables Binary variable Obsevations (i.e.‚ dependent variables) that occur in one of two possible states‚ often labelled zero and one. E.g.‚ “improved/not improved” and “completed task/failed to complete task.” Categorical Variable Usually an independent or predictor variable that contains values indicating membership in one of several possible categories. E.g.‚ gender (male or female)‚ marital status (married‚ single‚ divorced‚ widowed). The categories are often assigned numerical
Premium Marriage Measurement Gender
Follow the cake in Makati By Camille Anne M. Arcilla and Gervie Kay S. Estella |Philippine Daily Inquirer12:01 am | Sunday‚ September 21st‚ 2014 The cakes that the Makati City local government gives out to its senior citizens on their birthdays are made in Quiapo‚ Manila. From its bakery at 923 R. Hidalgo St.‚ Bakerite has been delivering the cakes to the Makati City Hall since March about 7:30 a.m. every day‚ replacing Cups and Mugs Kitchenette. Sonia Delmo‚ 42‚ has gotten used to reporting
Premium Makati City Birthday Manila
After reading the story‚ “Follow the Eagle‚” I am left with astonishment at the understatement in the writing and the deep significance in the context. I believe that this story is not only about Eagle’s journey over the cliff‚ but the journey is an allegory to Native Americans and other minority groups trying to achieve higher status in the white hierarchy of the West. First Domingo is riding on a “Japanese cycle stolen from a Colorado U law student.” The story informs the reader that Domingo is
Premium Minority group United States Native Americans in the United States
Chapter 1 The Problem and Its Background Introduction Changes are permanent thing on earth. Are the people is ready enough to accept the changes on the educational system? The current opening of classes here in the Philippines usually starts from June to March but our lawmakers want to amend the opening of classes. The existing school calendar which spans from June to March is often disrupted as destructive typhoons plague the region during the rainy season that’s why our lawmakers decided to
Free High school Education Higher education
What are Segmentation Variables? To understand what segmentation variables in marketing are‚ it helps to first know what market segmentation is. Market segmentation is the analysis of population demographics so they can be categorized in specific ways. These specific ways of categorization in market segmentation are why segmentation variables are needed and used. Four (4) groups of Segmentation Variables – 1. Geographic segmentation is based on variables such as: • Region: this kind of
Premium Psychographic Hotel Marketing
using random numbers in scientific computing. More precisely‚ it means using random numbers as a tool to compute something that is not random. For example1 ‚ let X be a random variable and write its expected value as A = E[X]. If we can generate X1 ‚ . . . ‚ Xn ‚ n independent random variables with the same distribution‚ then we can make the approximation A ≈ An = 1 n n Xk . k=1 The strong law of large numbers states that An → A as n → ∞. The Xk and An are random and (depending
Premium Normal distribution Probability theory Random variable
that company focuses on doing what they know best and doing it to perfection. They also use parts from suppliers who also do what they do best instead of everyone doing half heart jobs. B. Give employees a stronger career path By allowing the company to just focus on what they know best it allows employees to become the experts at their job. It also allows for them know they specialty well enough to develop future improvements. D. Turn fixed costs into variable costs When you outsource you
Premium