If you believed the proportion of the population students from Flint who had taken this Excel...
- If you believed the proportion of the population students from
Flint who had taken this Excel class in the last year was 0.23 and
you have no information on the standard deviation of the
population, and you calculated the proportion of people in Flint
for this sample is 0.17 what is the alternative hypothesis to see
if there is a difference (2 sided test)?
- HA: μ = 0.17
- HA: μ = 0.23
- HA: μ ≠ 0.17
- HA: μ ≠ 0.23
Homework Answers
solution:
this is the two tailed test .
The null and alternative hypothesis is ,
H0 : 
= 0.23
Ha :
0.23
HA: μ ≠ 0.23
Add Answer to:
If you believed the proportion of the population students from
Flint who had taken this Excel...
Question 5 (1 point) It is believed that students who begin studying for final exams a...
Question 5 (1 point) It is believed that students who begin studying for final exams a week before the test score differently than students who wait until the night before. Suppose you want to test the hypothesis that students who study one week before score less than students who study the night before. A hypothesis test for two independent samples is run based on your data and a p-value is calculated to be 2e-04. What is the appropriate conclusion? 1)...
you extract a sample of 115 students from this university. The sample proportion is the proportion...
you extract a sample of 115 students from this university. The sample proportion is the proportion of students in this sample who live on campus. The standard deviation of the sampling distribution of this sample proportion, rounded to four decimal places, is: 5. A random sample of 82 customers, who visited a department store, spent an average of $71 at this store. Suppose the standard deviation ofexpenditures at this store is σ. $19. The 98% confidence interval for the population...
sorry that there is three- I am having a hard time understanding these ones. It is believed that students who begi...
sorry that there is three- I am having a hard time
understanding these ones.
It is believed that students who begin studying for final exams a week before the test score differently than students who wait until the night before. Suppose you want to test the hypothesis that students who study one week before score different from students who study the night before. A hypothesis test for two independent samples is run based on your data and a p-value is...
Independent random samples of students were taken from two high schools, R and S, and the...
Independent random samples of students were taken from two high schools, R and S, and the proportion of students who drive to school in each sample was recorded. The difference between the two sample proportions (R minus S) was 0.07. Under the assumption that all conditions for inference were met, a hypothesis test was conducted where the alternative hypothesis was the population proportion of students who drive to school for R was greater than that for S. The p-value of...
A researcher in interested in whether students who are musicians have higher intelligence test sc...
A researcher in interested in whether students who are musicians have higher intelligence test scores than students in the general population. The mean for the general population is 100. The researcher selects musicians from local high schools and gives them an intelligence test, with a mean of 105. SS 725 for the 2. 30 sample Null Hypothesis (Ho): μ State in words: Alternative Hypothesis (Ha): μ > State in words: df= t critical value (with α : .05): One-tailed or...
1. Independent random samples of students were taken from two high schools, R and S, and...
1. Independent random samples of students were taken from two high schools, R and S, and the proportion of students who drive to school in each sample was recorded. The difference between the two sample proportions (R minus S) was 0.07. Under the assumption that all conditions for inference were met, a hypothesis test was conducted where the alternative hypothesis was the population proportion of students who drive to school for R was greater than that for S. The p-value...
8. A 95% confidence interval for population proportion of STA2023 students who studied more than an...
8. A 95% confidence interval for population proportion of STA2023 students who studied more than an hour for their last exam is (45 % , 55 % ) . The margin of error of this interval is: 8% c. 5% a. d. 42% b. 10% Short Answer Section: Read each question carefully, and answer all parts using complete sentences, proper grammar, and proper statistical terminology. Answers need to be legible. 9. In a recent poll of 100 randomly selected adults...
Ackerman and Goldsmith (2011) found that students who studied text from printed hardcopy had better test...
Ackerman and Goldsmith (2011) found that students who studied text from printed hardcopy had better test scores than students who studied from text presented on a screen. In a related study, a professor noticed that several students in a large class had purchased the e-book version of the course textbook. For the final exam, the overall average for the entire class was μ = 81.7, but the n-9 students who used e-books had a mean of M-77.2 with a standard...
Think about a population mean that you may be interested in and propose a hypothesis test...
Think about a population mean that you may be interested in and propose a hypothesis test problem for this parameter. Gather appropriate data and post your problem. Include the null and alternative hypothesis, alpha value, p-value, and a conclusion. Make sure that you use appropriate terminology, specify whether you are using the classical method or the p-value method, and fully explain your solution. How do we determine that we are to fail to reject the null hypothesis? What process do...
A USA Today article claims that the proportion of people who believe global warming is a...
A USA Today article claims that the proportion of people who believe global warming is a serious issue is 0.73, but given the number of people you've talked to about this same issue, you believe it is different from 0.73. The hypotheses for this test are Null Hypothesis: p = 0.73, Alternative Hypothesis: p ≠ 0.73. If you randomly sample 21 people and 12 of them believe that global warming is a serious issue, what is your test statistic and...
Question 5 (1 point) It is believed that students who begin studying for final exams a week before the test score differently than students who wait until the night before. Suppose you want to test the hypothesis that students who study one week before score less than students who study the night before. A hypothesis test for two independent samples is run based on your data and a p-value is calculated to be 2e-04. What is the appropriate conclusion? 1)...
you extract a sample of 115 students from this university. The sample proportion is the proportion of students in this sample who live on campus. The standard deviation of the sampling distribution of this sample proportion, rounded to four decimal places, is: 5. A random sample of 82 customers, who visited a department store, spent an average of $71 at this store. Suppose the standard deviation ofexpenditures at this store is σ. $19. The 98% confidence interval for the population...
sorry that there is three- I am having a hard time
understanding these ones.
It is believed that students who begin studying for final exams a week before the test score differently than students who wait until the night before. Suppose you want to test the hypothesis that students who study one week before score different from students who study the night before. A hypothesis test for two independent samples is run based on your data and a p-value is...
A researcher in interested in whether students who are musicians have higher intelligence test scores than students in the general population. The mean for the general population is 100. The researcher selects musicians from local high schools and gives them an intelligence test, with a mean of 105. SS 725 for the 2. 30 sample Null Hypothesis (Ho): μ State in words: Alternative Hypothesis (Ha): μ > State in words: df= t critical value (with α : .05): One-tailed or...
8. A 95% confidence interval for population proportion of STA2023 students who studied more than an hour for their last exam is (45 % , 55 % ) . The margin of error of this interval is: 8% c. 5% a. d. 42% b. 10% Short Answer Section: Read each question carefully, and answer all parts using complete sentences, proper grammar, and proper statistical terminology. Answers need to be legible. 9. In a recent poll of 100 randomly selected adults...
Ackerman and Goldsmith (2011) found that students who studied text from printed hardcopy had better test scores than students who studied from text presented on a screen. In a related study, a professor noticed that several students in a large class had purchased the e-book version of the course textbook. For the final exam, the overall average for the entire class was μ = 81.7, but the n-9 students who used e-books had a mean of M-77.2 with a standard...
Most questions answered within 3 hours.
-
These molecules are made in and secreted out of a microbial cell
and may affect cellular...
asked 11 minutes ago -
Read From Input Until EOF and Display Total Number of
Integers (C++).
1. Input a line...
asked 1 hour ago -
1. Build a Java Class that prints out your name. Print your
first name on the...
asked 1 hour ago -
From a planning perspective, how would you go about
installing such a monitoring system into a...
asked 2 hours ago -
Need help with elaborating on the following discussion question.
I responded earlier and my professor wants...
asked 3 hours ago -
What are some of FEMA EMI independent Study courses consist of ,
such as IS -212...
asked 5 hours ago -
In the following ordinary annuity, the interest is compounded
with each payment, and the payment is...
asked 6 hours ago -
Over the past decade medical costs have increased more rapidly
than other prices. In order to...
asked 6 hours ago -
A lead vat is 16 m long at room temperature (20°C). How much
longer is it...
asked 6 hours ago -
The Action Toy Company has decided to manufacture a new train
set, the production of which...
asked 6 hours ago -
The U.S. Department of Labor reports that of the roughly 155
million people employed, just over...
asked 6 hours ago -
Suppose you are the money manager of a $4.88 million investment
fund. The fund consists of...
asked 6 hours ago