AutoSave . OFF Homework 4 - Saved to my Mac Home Insert Draw Design Layout References Mailings Review View Tell me Share Comments Times New... 12 A Aa v Al AaBbCcDdEe AaBbCcDdEe AaBbCcD AaBbCcDdEt AaBb AaBbCcDdE Paste BIU v LV Av Normal No Spacing Heading 1 Heading 2 Title Subtitle Styles Dictate Sensitivity Pane Homework 4 1) An X-ray technician commissioned a study on wait times for service at the start of a day. For 20 consecutive days the number of number of people waiting for an X-ray was recorded. The results are given in the table below. Number of Number of people occurrences AWNI a) What is the probability for each outcome? b) What is the mean number of people waiting? 2) A sample of customers for Montana Gas and Electric resulted in the following distribution of monthly charges Amount ($) Number 0 - 49 13 50 -99 22 100 - 149 34 150 - 199 26 200 - 249 a) What is the probability that a customer has monthly electric cost of $150 or more? b) What is the probability of a customer having a monthly electric cost of less than $150? 3) A study of job satisfaction was conducted for four occupations. Job satisfaction was measured on a scale of 0 - 100 with higher scores indicating higher job satisfaction. The data obtained is summarized n the following crosstabulation. Satisfaction Score Occupation Under 50 50 - 59 60 - 69 70 - 79 80 - 89 Cabinetmaker 0 Lawyer Physical Therapist Systems Analyst NC a) What is the probability that a randomly selected person has a job satisfaction rating in the 80s? b) What is the probability of a job satisfaction rating in the 70s given the person is a Physical Therapist? c) What is the probability that a person randomly selected is a Cabinetmaker? d) What is the probability that a randomly selected person is a Lawyer and has a job satisfaction rating below 50? Page 1 of 2 508 words OF English (United States) Focus E + 110%AutoSave . OFF Homework 4 - Saved to my Mac Home Insert Draw Design Layout References Mailings Review View Tell me Share Comments Times New... 12 A Aa v AaBbCcDdEe AaBbCcDdEe AaBbCcD AaBbCcDdE AaBb AaBbCcDdE Paste BIU ab X2 v LA v EE Normal No Spacing Heading 1 Heading 2 Title Subtitle Styles Dictate Sensitivity Pane Occupation Under 50 50 - 59 60 - 69 70 - 79 80 -89 Cabinetmaker Lawyer 0 - w Physical Therapist Systems Analyst NOR -UNN ONO a) What is the probability that a randomly selected person has a job satisfaction rating in the 80s? b) What is the probability of a job satisfaction rating in the 70s given the person is a Physical Therapist? c) What is the probability that a person randomly selected is a Cabinetmaker? d) What is the probability that a randomly selected person is a Lawyer and has a job satisfaction rating below 50? e) Given a job satisfaction rating of 60 - 69 what is the probability that the person selected is a Systems Analyst? f) What is the probability of a job satisfaction rating of being 70 or higher? 4) The following scores were recorded during the first round of a recent PGA event. Score Occurrences Score Occurrences Score Occurrences 20 - -OLNW 11 20 22 JaUAW 8 - WW AW a) What is the expected score? b) What is the variance and standard deviation? 5) People drive frequently so accidents are common. A recent study looked into the safety of small cars. The study indicated that small cars are involved in 18% of all accidents and larger cars account for the other 82%. It also determined that 12.8% of small car accidents will result in a fatality. For larger cars only 5% of their accidents lead to a fatality. Smaller cars are more dangerous than larger cars but are involved in many fewer accidents. You recently read a headline that a traffic accident resulted in a fatality, what is the probability that it involved a small car? Page 2 of 2 508 words English (United States) Focus E + 110%