Statistics and Probability questions and answers in December 2021

1. The average score of a statistics class was 71 with a standard deviation of 10. a. What is the z score of a student with a grade of 68? b. What is the z score of a student with a grade of 80? 2. Us...
Please provide correct solutions/guidance to the questions with justifications/explanations with references/counterexamples. Tutors please help.      Question 1:   The PACF for the ARMA(p,q) proce...
Please provide true/false solutions to questions below and provide necessary justifications/explanations. . Q1: The error terms of an ideal VAR model are from a white noise process. True / False Q2:T...
A researcher wishes to test whether the mean of a normally distributed population is greater than 1.06 at the 5% significance level. Based upon 22 independent observations, she observes a sample mean ...
A researcher wishes to test whether the mean of a normally distributed population is greater than 1.06 at the 5% significance level. Based upon 22 independent observations, she observes a sample mean ...
A researcher wishes to test whether the mean of a normally distributed population is greater than 1.06 at the 5% significance level. Based upon 22 independent observations, she observes a sample mean ...
  A multiple linear regression analysis was carried out using the following data for 60 residential housing sales in a given area in the east coast of the USA in 2019:   Y = Sales Price (in thousand...
  The operations division of a commercial bank undertakes a study to predict the transaction time of a given task from the number of transactions. In this situation: Y = Transaction Time X = Number o...
A multiple linear regression analysis was carried out using the following data for 60 residential housing sales in a given area in the east coast of the USA in 2019: Y = Sales Price (in thousands of d...
A multiple linear regression analysis was carried out using the following data for 60 residential housing sales in a given area in the east coast of the USA in 2019: Y = Sales Price (in thousands of d...
A random sample of 400 incomes of unionized transit workers was taken in order to estimate the mean household income and the percentage of incomes that exceed $80,000. The results of this random sampl...
The "Multinational Parks" is interested in determining the variables that influence the amount of money families spend at their parks. The "Parkspend" table to the right indicates the amount spent per...
Question 15                   A regression analysis was run using the following 2 variables for 50 homes in a given area of New York State: Y = Annual Heating Cost of a home (in dollars) X= S...
Question 13      What is the main purpose of carrying out a residual or error analysis in a regression analysis?       Question 13 options:   To estimate the regression coefficients.     To d...
Question 10        An insurance company is interested in determining whether there was a relationship between Y = amount insured (in thousands of dollars) and three variables that they believe inf...
The table below gives the average life expectancy (in years) of a person from a certain country based on various years of birth. Here, x represents the year of birth after 1990, and y represents the l...
In the description of the following experiment, determine the experimental factor. During a study testing the amount of sun and the effect on the growth of a plant, the research team grouped the plant...
Suppose germination periods, in days, for grass seed are normally distributed and have a known population standard deviation of 5 days and an unknown population mean. A random sample of 19 types of gr...
URGENT: A Canadian manufacturing company operates 2 facilities that specialize in producing electronic equipment. The facility in Toronto has enhanced production capability while the facility in Ottaw...
*URGENT*: A personal trainer at a gym wants to be able to tell her clients how many calories, Y, they will burned based on the number of minutes, X, they spend on an elliptical exercise machine. She t...
* Urgent, please answer soon* : Dude's Widgets is a popular manufacturer of widgets. Unfortunately, the company has had 10% of all its widgets returned under warranty due to defects. Several quality c...
QUESTION 2. [7 marks] Wayne's Widgets is a popular manufacturer of widgets. Unfortunately, the company has had 10% of all its widgets returned under warranty due to defects. Several quality control im...
A movie production company wishes to test whether three different endings of a soon-to-be released movie is associated with significantly different levels of recommendation. The production company des...
E Homework: ... Question 77, 10.4.13-T HW Score: 63.87%, 79.83 of 125 points Part 1 of 3 O Points: 0 of 5 Save The accompanying table provides data for tar, nicotine, and carbon monoxide (CO) contents...
Timberline Health, an integrated delivery system serving residents in five counties in eastern Washington, is considering new opportunities to increase community awareness of the organization's outpat...
An airline company is interested in improving customer satisfaction rate from the  currently claimed. The company sponsored a survey of  customers and found that  customers were satisfied. Determin...
he weights of 5 squash (in pounds) are 10,17,17.5,18.5,...   The weights of 5 squash (in pounds) are 10,17,17.5,18.5, and 19.5   . The sample weights have a mean of x¯=16.5   . The accepted ...
Each of two parents has the genotype red / brown, which consists of the pair of alleles that determine hair color, and each parent contributes one of those alleles to a child. Assume that if the child...
Question 7 options: Farm equipment has a class life of ten years. The equipment is being depreciated using the​ straight-line depreciation method. The equation for the book value of the farm equipme...
Suppose you collected the data below on the daily consumption of water in cups of 20 students in your class. 9 6 5 5 9 5 10 5 5 4 7 4 9 6 7 9 7 4 7 5 Select the correct dotplot  AND  correct mean f...
Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 2 inches. The heights of 9 randomly selected students are 65, 75, 73, ...
BonesNoBones.csv: "Date","BonesDay","Day_of_Week","Weather_NYC" "11/11/2021","No Bones Day","Thursday","Cloudy" "11/09/2021","Bones Day","Tuesday","Sunny" "11/08/2021","Bones Day","Monday","Sunny" "11...
BonesNoBones.csv: "Date","BonesDay","Day_of_Week","Weather_NYC" "11/11/2021","No Bones Day","Thursday","Cloudy" "11/09/2021","Bones Day","Tuesday","Sunny" "11/08/2021","Bones Day","Monday","Sunny" "11...
BonesNoBones.csv: "Date","BonesDay","Day_of_Week","Weather_NYC" "11/11/2021","No Bones Day","Thursday","Cloudy" "11/09/2021","Bones Day","Tuesday","Sunny" "11/08/2021","Bones Day","Monday","Sunny" "11...
BonesNoBones.csv: "Date","BonesDay","Day_of_Week","Weather_NYC" "11/11/2021","No Bones Day","Thursday","Cloudy" "11/09/2021","Bones Day","Tuesday","Sunny" "11/08/2021","Bones Day","Monday","Sunny" "11...
BonesNoBones.csv: "Date","BonesDay","Day_of_Week","Weather_NYC" "11/11/2021","No Bones Day","Thursday","Cloudy" "11/09/2021","Bones Day","Tuesday","Sunny" "11/08/2021","Bones Day","Monday","Sunny" "11...
Course Material is available in the following shared folder. https://drive.google.com/file/d/13iy5JlX-RKR5MfLqWBlaBA1l3UD32OBq/view?usp=sharing   1) Process data from a refrigeration machine at suppl...
Course Material is available in the following shared folder. https://drive.google.com/file/d/13iy5JlX-RKR5MfLqWBlaBA1l3UD32OBq/view?usp=sharing   1. EXO, Inc. manufactures circuit boards. A random sa...