Intro to Statistics:
Q1:
![[8-1] Suppose we are testing the null hypothesis Ho: u = 50 and the alternative Ha: u 50 for a normal population with o 6. We](http://img.homeworklib.com/questions/7dd21890-28aa-11eb-9c31-0b8ea9e9dd8d.png?x-oss-process=image/resize,w_560)
Q2:
![Question 2 (0.5 points) 8-2] When performing a one-sample t-test, if the sample size is 14, then of freedom should be used fo](http://img.homeworklib.com/questions/7e40cdf0-28aa-11eb-8620-17b12bdb8791.png?x-oss-process=image/resize,w_560)
Q3:
Homework Answers
Add Answer to:
Intro to Statistics:
Q1:
Q2:
Q3:
[8-1] Suppose we are testing the null hypothesis Ho: u...
Q1) Why we sometimes get unexpected results during hypothesis testing? Q2) What is the relationship between...
Q1) Why we sometimes get unexpected results during hypothesis testing? Q2) What is the relationship between level of significance and confidence level? Q3) State the different factors on which sample size depends? Q4) What is the difference between 2 and t test? (5) Draw distribution curve and write hypothesis for the left one tail and right one tail.
Please write the full derivation of the answers. Thank you! Q6) 2 points For testing Ho:...
Please write the full
derivation of the answers. Thank you!
Q6) 2 points For testing Ho: u = 14, H:H # 14, an a = 0.05 level t-test is being considered. What sample size is necessary in order for the probability to be 0.1 of falsely failing to reject H, when the true population mean differs from 14 by 0.5? From a preliminary sample we estimate o to be 1.25.
The null hypothesis is Ho ?? ?2 and the alternative hypothess is a ?? ? The...
The null hypothesis is Ho ?? ?2 and the alternative hypothess is a ?? ? The data in the accompanying table are rom a simple random paired sample rom the two populations under consideration. Use the paired t-test to perform the required hypothesis test at the 10% significance level EEE Click the icon to view the data table ?Click the icon to view the table of critical t values. X m Table of critical t values ple Random Paired Sample...
significance level. For what values of t will the null bypothesis not be rejecto A) Between...
significance level. For what values of t will the null bypothesis not be rejecto A) Between -1.761 and 1.761 B) To the left of-1.345 or to the right of 1.345 C) To the left of -1.645 or to the right of 1.645 D) To the left of -1.282 or to the right of 1.282 14) A recent study focused on the amount of money single men and women save monthly. The infirmationi summarized next. Assume that the population standard deviations...
Suppose that we are to conduct the following hypothesis test: Ho : u = 1020 H:...
Suppose that we are to conduct the following hypothesis test: Ho : u = 1020 H: 1 # 1020 Suppose that you also know that o = 230. n = 90. x = 1056.8, and take a = 0.05. Draw the sampling distribution, and use it to determine each of the following: The value of the standardized test statistic (test data z data or t data): Type your answer here Note: For the next part, your answer should use interval...
Question 8 1 pts Suppose we are conducting a hypothesis test to see if the average...
Question 8 1 pts Suppose we are conducting a hypothesis test to see if the average number of M&Ms one person can eat before getting sick has decreased. We calculate our test statistic on the z-table to be -1.75. Do we reject or fail to reject Ho ata = .05? O Fail to reject; the average does not seem to have fallen O Reject; the average seems to have fallen O Reject: the average does not seem to have fallen...
Question 1 (The following data is from Q1 of HW2) Suppose we wanted to predict the selling price ...
Question 1 (The following data is from Q1 of HW2) Suppose we wanted to predict the selling price of a house using its size in a certain area of a city. A random sample of six houses were selected from the area. The data is presented in the following table with size given in hundreds of square feet, and sale price in thousands of dollars: Size (X121518 21 24 27 Price (Y)6085 75 105 120 110 We are interested in...
Data Summaries Sample Mean Sample Std Dev Sample Size 79.998 11.588 1000 Hypothesis Testing Confidence Interval...
Data Summaries Sample Mean Sample Std Dev Sample Size 79.998 11.588 1000 Hypothesis Testing Confidence Interval Creation Level of Confidence: 95% Alpha (a) Value: 0.05 MOE 0.719 9 - MOE: 79.279 9 + MOE: 80.717 Confidence Interval Question What is the confidence interval telling you about the population parameter? Use the formula: df = n-1 Use the formula: (9-4_0)/(s/sqrt(n)) Degrees of Freedom: Alpha (a) Value: Test Statistic Value: Is your test statistic a z value or at value? P-Value Method...
Question Completion Status: QUESTION 2 The Null Hypothesis (HO): O The two categorical variables are independent...
Question Completion Status: QUESTION 2 The Null Hypothesis (HO): O The two categorical variables are independent Op1 = P2 = ... = Pg, where g = 4 Homogeneity of distribution of a categorical response Goodness-of-fit test QUESTION 3 Significance level: a = a=0.05 Which test statistic would we use for the test? X-MO 2 = P - Po po(1-P) F = t= MSG MSE x-1 (0-1) E s/n (a) 72 (b) (c) (d) O 1.a O2.b O3.c 04.0 QUESTION 4...
1. Consider the hypothesis test Ho: u1=p2 against H1: u 17 M2. Suppose that sample sizes...
1. Consider the hypothesis test Ho: u1=p2 against H1: u 17 M2. Suppose that sample sizes are n1 = 13, n2 = 10 x1=4.7, x2 =6.8, s1= 2 and s2 =2.5. Assume that the data are randomly drawn from two independent Normal distributions (a) Confirm that it is reasonable to assume 01 2 = 022 by completing the steps i. through v. below. Use a = 0.05. HO: 01 2 = 02 20:01 2 * 022 i. Test Statistic ii....
Q1) Why we sometimes get unexpected results during hypothesis testing? Q2) What is the relationship between level of significance and confidence level? Q3) State the different factors on which sample size depends? Q4) What is the difference between 2 and t test? (5) Draw distribution curve and write hypothesis for the left one tail and right one tail.
Please write the full
derivation of the answers. Thank you!
Q6) 2 points For testing Ho: u = 14, H:H # 14, an a = 0.05 level t-test is being considered. What sample size is necessary in order for the probability to be 0.1 of falsely failing to reject H, when the true population mean differs from 14 by 0.5? From a preliminary sample we estimate o to be 1.25.
The null hypothesis is Ho ?? ?2 and the alternative hypothess is a ?? ? The data in the accompanying table are rom a simple random paired sample rom the two populations under consideration. Use the paired t-test to perform the required hypothesis test at the 10% significance level EEE Click the icon to view the data table ?Click the icon to view the table of critical t values. X m Table of critical t values ple Random Paired Sample...
significance level. For what values of t will the null bypothesis not be rejecto A) Between -1.761 and 1.761 B) To the left of-1.345 or to the right of 1.345 C) To the left of -1.645 or to the right of 1.645 D) To the left of -1.282 or to the right of 1.282 14) A recent study focused on the amount of money single men and women save monthly. The infirmationi summarized next. Assume that the population standard deviations...
Suppose that we are to conduct the following hypothesis test: Ho : u = 1020 H: 1 # 1020 Suppose that you also know that o = 230. n = 90. x = 1056.8, and take a = 0.05. Draw the sampling distribution, and use it to determine each of the following: The value of the standardized test statistic (test data z data or t data): Type your answer here Note: For the next part, your answer should use interval...
Question 8 1 pts Suppose we are conducting a hypothesis test to see if the average number of M&Ms one person can eat before getting sick has decreased. We calculate our test statistic on the z-table to be -1.75. Do we reject or fail to reject Ho ata = .05? O Fail to reject; the average does not seem to have fallen O Reject; the average seems to have fallen O Reject: the average does not seem to have fallen...
Question 1 (The following data is from Q1 of HW2) Suppose we wanted to predict the selling price of a house using its size in a certain area of a city. A random sample of six houses were selected from the area. The data is presented in the following table with size given in hundreds of square feet, and sale price in thousands of dollars: Size (X121518 21 24 27 Price (Y)6085 75 105 120 110 We are interested in...
Data Summaries Sample Mean Sample Std Dev Sample Size 79.998 11.588 1000 Hypothesis Testing Confidence Interval Creation Level of Confidence: 95% Alpha (a) Value: 0.05 MOE 0.719 9 - MOE: 79.279 9 + MOE: 80.717 Confidence Interval Question What is the confidence interval telling you about the population parameter? Use the formula: df = n-1 Use the formula: (9-4_0)/(s/sqrt(n)) Degrees of Freedom: Alpha (a) Value: Test Statistic Value: Is your test statistic a z value or at value? P-Value Method...
Question Completion Status: QUESTION 2 The Null Hypothesis (HO): O The two categorical variables are independent Op1 = P2 = ... = Pg, where g = 4 Homogeneity of distribution of a categorical response Goodness-of-fit test QUESTION 3 Significance level: a = a=0.05 Which test statistic would we use for the test? X-MO 2 = P - Po po(1-P) F = t= MSG MSE x-1 (0-1) E s/n (a) 72 (b) (c) (d) O 1.a O2.b O3.c 04.0 QUESTION 4...
1. Consider the hypothesis test Ho: u1=p2 against H1: u 17 M2. Suppose that sample sizes are n1 = 13, n2 = 10 x1=4.7, x2 =6.8, s1= 2 and s2 =2.5. Assume that the data are randomly drawn from two independent Normal distributions (a) Confirm that it is reasonable to assume 01 2 = 022 by completing the steps i. through v. below. Use a = 0.05. HO: 01 2 = 02 20:01 2 * 022 i. Test Statistic ii....
Most questions answered within 3 hours.
-
answer the questions throughout this program
public class Day implements Comparable {
Private Boolean atWork;...
asked 38 seconds ago -
This is C++ code for parking fee management program
#include <iostream>
#include <iomanip>
using namespace std;...
asked 11 minutes ago -
The free energy change for the following reaction at 25 °C, when
[Sn2+] = 1.17 M...
asked 1 hour ago -
An MNE is this kind of industry when competition in one country
is essentially independent of...
asked 3 hours ago -
. For this set of questions, determine what
proportion of a normal distribution is located betweeneach...
asked 4 hours ago -
A college student is employed as a door-to-door newspaper
salesman. Historical data suggests that the student...
asked 4 hours ago -
MATLAB HW 11 problem using Switch Case and Input commands
Write a script file that calculates...
asked 4 hours ago -
Considering gravitational time dilation, calculate the time that
passes in Earth’s surface while 1 hour passes...
asked 5 hours ago -
Minitab Problem: Take the Lake Hume June rainfall data and find
use the processes outlined in...
asked 6 hours ago -
X Company is trying to decide whether to continue using old
equipment to make Product A...
asked 6 hours ago -
IN PYTHON ONLY !! Program 2: Re-work
program #5 (WeeklyHours) from the previous assignment such that...
asked 6 hours ago -
The average length of time between arrivals at a turnpike
toll-booth is 26 seconds. What is...
asked 8 hours ago