A car company is attempting to develop a reasonably priced gasoline that will deliverimproved gasoline mileages. As part of its development process, the company would like to compare the effects of three types of gasoline (A, B and C) on gasoline mileage. For testing purposes, the company will compare the effects of gasoline types A, B and C on the gasoline mileage obtained by a popular mid-size car. 10 cars are randomly selected to be assigned toeach gasoline type (A, B and C), i.e.,nA =nB = nC = 10. The gasoline mileage for eachtest drive is measured.It is found that the gasoline mileage sample means of the three groups are 34.92, 36.56 and 33.98. The ANOVA table for the three-group model is summarized as following.
| Sum sq | Df | Mean Sq | F Stat | p value | |
|---|---|---|---|---|---|
| Between group | 18.0493 | 2 | 9.0247 | 14.3097 | 0.0001 |
| Within group | 17.0280 | 27 | 0.6307 | ||
| Total | 35.0773 | 29 |
Let μA, μB, and μC be the mean mileages of gasoline types A, B, and, C respectively. Carry out an overal test to determine if there is significant difference among μA, μB, and μC at the sinificance level of 1%.
In: Math
Java language
Exercise #2:
Design a Lotto class with one array instance variable to hold three
random integer values (from 1 to 9). Include a constructor that
randomly populates the array for a lotto object. Also, include a
method in the class to return the array.
Use this class in the driver class (LottoTest.java) to simulate a
simple lotto game in which the user chooses a number between 3 and
27. The user runs the lotto up to 5 times ( by creating an object
of Lotto class each time and with that three random integer values
will be stored in objects’s array instance variable) and each time
the sum of lotto numbers (sum of three random integers values) is
calculated. If the number chosen by the user matches the sum, the
user wins and the game ends. If the number does not match the sum
within five rolls, the computer wins.
Exercise #3:
Write a Java class that implements a static method –
SortNumbers(int… numbers) with variable number of arguments. The
method should be called with different numbers of parameters and
does arrange the numbers in descending order. Call the method
within main method of the driver classand display the results.
In: Computer Science
Write one or two paragraphs about the differences between active data gathering, and passive data gathering which relates to communicating Downstream between suppliers and customers which lead to develop quality in organization
In: Economics
Write one or two paragraphs about the differences between active data gathering, and passive data gathering which relates to communicating Downstream between suppliers and customers which lead to develop quality in organization.
In: Economics
Willow Brook National Bank operates a drive-up teller window that allows customers to complete bank transactions without getting out of their cars. On weekday mornings, arrivals to the drive-up teller window occur at random, with an arrival rate of 24 customers per hour or 0.4 customers per minute. Also assume that the service times for the drive-up teller follow an exponential probability distribution with a service rate of 36 customers per hour, or 0.6 customers per minute. Determine the probabilities of 0, 1, 2, and 3 customers in the system. Round your answers to 4 decimal places. n P(n) 0 1 2 3 What is the probability that more than three customers will be in the drive-up teller system at the same time? Round your answer to 4 decimal places. P (n > 3) =
In: Statistics and Probability
If Google's 2006 entry into the Chinese search engine market was a good (or bad) philosophy based decision, is withdrawal necessarily a bad (or good) decision?
In: Economics
Consider a compressor in which air enters at 1 bar, 27°C and exits at 3.5 bar, 127°C. The work required is 127 kJ/kg of air flowing through the compressor. Heat transfer between the compressor and environment occurs at 27°C.
Determine
(a) the heat transfer, in kJ/kg
(b) the entropy generation rate, in kJ/kg.K, for the compressor as a control volume
(c) the entropy generation rate, in kJ/kg.K, for the compressor and the surrounding environment
(d) the entropy generation rate, in kJ/kg.K, for the environment alone.
In: Mechanical Engineering
72% of all Americans live in cities with population greater than
100,000 people. If 46 Americans are randomly selected, find the
probability that
a. Exactly 31 of them live in cities with population greater than
100,000 people.
b. At most 34 of them live in cities with population greater than
100,000 people.
c. At least 30 of them live in cities with population greater than
100,000 people.
d. Between 27 and 34 (including 27 and 34) of them live in cities
with population greater than 100,000 people.
In: Statistics and Probability
Kay Mary, senior vice president for marketing at Terrapin Cosmetics, asked you to estimate, with 96% confidence, the proportion of all of the company’s customers who placed “large” orders, meaning over $200, in both January and February of 2019. To estimate the proportion, you selected a random sample of 845 customers. Of the customers in the sample, 165 placed large orders in both January and February of 2019. Please write the interval boundaries to THREE decimal places and interpret the interval.
In: Statistics and Probability
The president of Doerman Distributors, Inc., believes that 30% of the firm’s orders come from first-time customers. A random sample of 100 orders will be used to estimate the proportion of first-time customers. Assume that the president is correct and p =0.30. What is the probability that the sample proportion will be between 0.25 and 0.35?
In: Statistics and Probability