4. Do seniors use Instagram more than freshman?In a random sample of 485Pa. high school seniors,320...
4. Do seniors use Instagram more than freshman?In a random sample of 485Pa. high school seniors,320 reported that they use Instagram. Out of a random sample of395 Pa. high school freshman 234reported that they use Instagram.
a. Does this show convincing evidence at the .01 level that the proportionof high school seniors who use Instagram is more than high school freshman?
b. What would your conclusion be if ?=0.05
c. The confidence interval isreported as (−.0089,.14363). Explain how this supports your claim for part a.
Homework Answers
Add Answer to:
4. Do seniors use Instagram more than freshman?In a random
sample of 485Pa. high school seniors,320...
A researcher believes that the proportion of male high school seniors who have their own cars is higher than the proportion of female high school seniors who have their ...
A researcher believes that the proportion of male high school seniors who have their own cars is higher than the proportion of female high school seniors who have their own cars. In a sample of 35 male high school seniors 10 had their own cars. In a sample of 40 female high school seniors, 10 had their own cars. At α = 0.05, test the researchers claim using the five step testing method.
4. You want to estimate the mean SATM score for 250,000 high school seniors in California. Only a...
4. You want to estimate the mean SATM score for 250,000 high school seniors in California. Only about 45% of California students take the SAT. These self-selected students are planning to attend college and are not representative of all California seniors A simple random sample (SRS) of 500 California high school seniors is tested. The mean score of the sample is Y 461. What could you say about the mean score, n-508 in the population of all 250,000 seniors? Assume...
An SRS of 380 high school seniors gained an average of i -23.51 points in their...
An SRS of 380 high school seniors gained an average of i -23.51 points in their second attempt at the SAT Mathematics exam. Assume that the change in score has a Normal distribution with standard deviation σ 48.51, we want to estimate the mean change in score u in the population of all high school seniors. (a) Using the 68-95-99.7 Rule or the z-table (Table A), give a 95% confidence interval (a, b) for based on this sample. Enter your...
2. (10 pt) A reseracher estimates that the dropout rate for seniors at high schools in...
2. (10 pt) A reseracher estimates that the dropout rate for seniors at high schools in a state in USA is 15%. Last year, 38 seniors from a random sample of 200 seniors in this state withdew from school. At a = 0.05, is there enough evidence to reject the reseracher's claim? Show your work, explain and draw a conlusion.
13. Time Magazine states that the drop out rate for high school seniors is ten percent....
13. Time Magazine states that the drop out rate for high school seniors is ten percent. You conduct a test to see if the drop out rate for high school seniors is actually more than ten percent. One hundred high school seniors were randomly selected to see if they had dropped out. The number of these high school seniors who dropped out is 15. Determine the p-value using the answer to question. Time Magazine states that the drop out rate...
anyone hlep me with this four problme please!!! 6) A random sample of high school girls...
anyone hlep me with this four problme please!!!
6) A random sample of high school girls were asked how many hours per week they use social media. The sample mean of the 25 girls was 9 with standard deviation 2.7. What is the 90% confidence interval for the true mean for the hours per week high school girls use social media? Assume the population is normally distributed. 7) A random sample of 40 men were asked how if they enjoyed...
5. A teacher was interested in the mathematical ability of graduating high school seniors in her...
5. A teacher was interested in the mathematical ability of graduating high school seniors in her state. She gave a 32-item test to a random sample of 15 seniors with the following results: mean = 1270, and standard deviation = 160. Find the 95% confidence interval and write a sentence describing what it means. Show your work.
You want to estimate the mean SATM score for 250,000 high school seniors in California. Only abou...
You want to estimate the mean SATM score for 250,000 high school seniors in California. Only about 45% of California students take the SAT. These self-selected students are planning to attend college and are not representative of all California seniors. A simple random sample (SRS) of 500 California high school seniors is tested. The mean score of the sample is Y = 461 What could you say about the mean score, η = 508 in the population of all 250,000...
Population o El Camino Students (P1- Students who use Instagram more than 7 hours per week, P2- Students who use...
Population o El Camino Students (P1- Students who use Instagram more than 7 hours per week, P2- Students who use Instagram less than 7 hours per week) Variable o Time Spent on Instagram per week (7+hours(yes) below 7(no)) GPA (3.0 or higher (yes) or below 3.0(no)) -Boolean Parameter: Proportion "P1, P2" The group MWA in Professor Love's class wants to test using a significance level of 0.05 if students at El Camino Community College who use Instagram for 7 hours...
High School and Beyond, Part II: We considered the differences between the reading and writing scores...
High School and Beyond, Part II: We considered the differences between the reading and writing scores of a random sample of 200 students who took the high school and beyond survey in exercise 5.3. The mean and standard deviation of the differences are is = -0.545 and 8,887 points. a) Calculate a 95% confidence interval for the average difference between the reading and writing scores of all students. b) Interpret this interval in context. c) Does the confidence interval provide...
4. You want to estimate the mean SATM score for 250,000 high school seniors in California. Only about 45% of California students take the SAT. These self-selected students are planning to attend college and are not representative of all California seniors A simple random sample (SRS) of 500 California high school seniors is tested. The mean score of the sample is Y 461. What could you say about the mean score, n-508 in the population of all 250,000 seniors? Assume...
An SRS of 380 high school seniors gained an average of i -23.51 points in their second attempt at the SAT Mathematics exam. Assume that the change in score has a Normal distribution with standard deviation σ 48.51, we want to estimate the mean change in score u in the population of all high school seniors. (a) Using the 68-95-99.7 Rule or the z-table (Table A), give a 95% confidence interval (a, b) for based on this sample. Enter your...
2. (10 pt) A reseracher estimates that the dropout rate for seniors at high schools in a state in USA is 15%. Last year, 38 seniors from a random sample of 200 seniors in this state withdew from school. At a = 0.05, is there enough evidence to reject the reseracher's claim? Show your work, explain and draw a conlusion.
anyone hlep me with this four problme please!!!
6) A random sample of high school girls were asked how many hours per week they use social media. The sample mean of the 25 girls was 9 with standard deviation 2.7. What is the 90% confidence interval for the true mean for the hours per week high school girls use social media? Assume the population is normally distributed. 7) A random sample of 40 men were asked how if they enjoyed...
You want to estimate the mean SATM score for 250,000 high school seniors in California. Only about 45% of California students take the SAT. These self-selected students are planning to attend college and are not representative of all California seniors. A simple random sample (SRS) of 500 California high school seniors is tested. The mean score of the sample is Y = 461 What could you say about the mean score, η = 508 in the population of all 250,000...
Population o El Camino Students (P1- Students who use Instagram more than 7 hours per week, P2- Students who use Instagram less than 7 hours per week) Variable o Time Spent on Instagram per week (7+hours(yes) below 7(no)) GPA (3.0 or higher (yes) or below 3.0(no)) -Boolean Parameter: Proportion "P1, P2" The group MWA in Professor Love's class wants to test using a significance level of 0.05 if students at El Camino Community College who use Instagram for 7 hours...
Most questions answered within 3 hours.
-
Blood pressure is normally taken on the upper arm at the level
of the heart. Suppose,...
asked 1 second from now -
trust is best established through the combination of ------and
------- .
1. magnanimity and justice
2....
asked 1 minute ago -
Calculate the [OH (aq)] in limes which have a [H3O*(aq)] of 1.3 x
10 mol/L
asked 1 minute ago -
Suppose that the satellite around the earth has an orbit that is
24 KM larger in...
asked 3 minutes ago -
A nozzle with a radius of 0.250 cm is attached to a garden hose
with a...
asked 12 minutes ago -
PLEASE do not use any loops for the program; only recursion is
allowed
4. Write a...
asked 21 minutes ago -
Please help me with me. I did the first part to write the operations but in...
asked 18 minutes ago -
Use Cryptool to find the Cryptographic SHA-1 hash value of the
string "abc". The calculator is...
asked 22 minutes ago -
You are attempting to calculate a firm’s free cash flow to
equity. You know the following...
asked 1 hour ago -
the following reaction occurs in a balloon containing
N2O2 gas
N2O4(g)=2NO2(g)
will the volume of the...
asked 1 hour ago -
answer the questions throughout this program
public class Day implements Comparable {
Private Boolean atWork;...
asked 1 hour ago -
This is C++ code for parking fee management program
#include <iostream>
#include <iomanip>
using namespace std;...
asked 2 hours ago