Homework Answers
Yes it does
Here our sample size is 216. Clearly the number of people in the US are more than 2160 ( 10%). The 10% condition says that our sample size should not be more than 10% of the population. Therefore, given context fit the 10% condition for independence
Add Answer to:
D 1. A market researcher for a phone company surveys 216 people as a random sample...
A marketing researcher for a phone company surveys 180 people and finds that the proportion of...
A marketing researcher for a phone company surveys 180 people and finds that the proportion of customers who are likely to switch providers when their contract expires is 12%. Complete parts a) and b) below. a) What is the standard deviation of the sampling distribution of the proportion? SD (Ⓡ) - (Round to four decimal places as needed.) b) If she wants to reduce the standard deviation by half, how large a sample would she need? ne (Type a whole...
Statistics Part 2 Exercises 1. A random sample of 755 U.S. cell phone users age 18...
Statistics Part 2 Exercises 1. A random sample of 755 U.S. cell phone users age 18 and older found that the average number of text messages sent or received per day is 41.5 messages with margin of error 12.2 messages. a) Give the population. b) Give the sample. c) What value is the best estimate of the actual average number of text messages sent received by all U.S. cell phone users age 18 and above? d) Find the confidence interval....
1. A random sample of 30 boxes of bolts was purchased at a local hardware store...
1. A random sample of 30 boxes of bolts was purchased at a local hardware store and the average number of bolts per box was 52. It is known that the population standard deviation of bolts per box is 6 bolts. a Is this a z or t-distribution? Why? b. Find and interpret a 95% confidence interval to estimate the average number of bolts per box for all boxes in the population. Round to 3 decimal places. C What would...
The type of household for the U.S. population and for a random sample of 411 households...
The type of household for the U.S. population and for a random sample of 411 households from a community in Montana are shown below. Type of Household Percent of U.S. Households Observed Number of Households in the Community Married with children 26% 101 Married, no children 29% 118 Single parent 9% 28 One person 25% 97 Other (e.g., roommates, siblings) 11% 67 Use a 5% level of significance to test the claim that the distribution of U.S. households fits the...
The type of household for the U.S. population and for a random sample of 411 households...
The type of household for the U.S. population and for a random sample of 411 households from a community in Montana are shown below. Type of Household Percent of U.S. Households Observed Number of Households in the Community Married with children 26% 100 Married, no children 29% 118 Single parent 9% 30 One person 25% 93 Other (e.g., roommates, siblings) 11% 70 Use a 5% level of significance to test the claim that the distribution of U.S. households fits the...
The type of household for the U.S. population and for a random sample of 411 households...
The type of household for the U.S. population and for a random sample of 411 households from a community in Montana are shown below. Observed Number of Households in the Community 90 Type of Household Married with children Married, no children Single parent One person Other (e.g., roommates, siblings) Percent of U.S. Households 26% 29% 9% 25% 11% 126 28 100 67 Use a 5% level of significance to test the claim that the distribution of U.S. households fits the...
(1 point) A researcher is interested in whether the number of years of formal education is...
(1 point) A researcher is interested in whether the number of years of formal education is related to a person's decision to never smoke, continue to smoke, or quit smoking cigarettes. The data below represent the smoking status by level of education for residents of the United States 18 years or older from a random sample of 375 residents. Round all numeric answers to four decimal places. Smoking Status Education Level Current Former Never Less than high school 11 21...
1. We reject the null hypothesis only when: a. our sample mean is larger than the population mean. b. the p value asso...
1. We reject the null hypothesis only when: a. our sample mean is larger than the population mean. b. the p value associated with our test statistic is greater than the significance level of the test we have chosen. c. our sample mean is smaller than the population mean. d. the p value associated with our test statistic is smaller than the significance level of the test we have chosen. 2. In a study of simulated juror decision making, researchers...
The type of household for the U.S. population and for a random sample of 411 households...
The type of household for the U.S. population and for a random sample of 411 households from the community Dove Creek, Montana, are shown (based on Statistical Abstract of the United States) Observed Number of Percent of U.S. Households in Type of Househol Households Dove Creek 102 26% Married with children 112 29% Married, no children Single parent 9% One person 25% 96 11% Other (e.g., roommates, siblings) 68 Use a 5% level of significance to test the claim that...
HW8-Practice: Problem 5 Problem Value: 1 point(s). Problem Score: 0%. Attempts Remaining: Unlimited. (1 point) A...
HW8-Practice: Problem 5 Problem Value: 1 point(s). Problem Score: 0%. Attempts Remaining: Unlimited. (1 point) A researcher is interested in whether the number of years of formal education is related to a person's decision to never smoke, continue to smoke, or quit smoking cigarettes. The data below represent the smoking status by level of education for residents of the United States 18 years or older from a random sample of 250 residents. Round all numeric answers to four decimal places....
A marketing researcher for a phone company surveys 180 people and finds that the proportion of customers who are likely to switch providers when their contract expires is 12%. Complete parts a) and b) below. a) What is the standard deviation of the sampling distribution of the proportion? SD (Ⓡ) - (Round to four decimal places as needed.) b) If she wants to reduce the standard deviation by half, how large a sample would she need? ne (Type a whole...
Statistics Part 2 Exercises 1. A random sample of 755 U.S. cell phone users age 18 and older found that the average number of text messages sent or received per day is 41.5 messages with margin of error 12.2 messages. a) Give the population. b) Give the sample. c) What value is the best estimate of the actual average number of text messages sent received by all U.S. cell phone users age 18 and above? d) Find the confidence interval....
1. A random sample of 30 boxes of bolts was purchased at a local hardware store and the average number of bolts per box was 52. It is known that the population standard deviation of bolts per box is 6 bolts. a Is this a z or t-distribution? Why? b. Find and interpret a 95% confidence interval to estimate the average number of bolts per box for all boxes in the population. Round to 3 decimal places. C What would...
The type of household for the U.S. population and for a random sample of 411 households from a community in Montana are shown below. Observed Number of Households in the Community 90 Type of Household Married with children Married, no children Single parent One person Other (e.g., roommates, siblings) Percent of U.S. Households 26% 29% 9% 25% 11% 126 28 100 67 Use a 5% level of significance to test the claim that the distribution of U.S. households fits the...
The type of household for the U.S. population and for a random sample of 411 households from the community Dove Creek, Montana, are shown (based on Statistical Abstract of the United States) Observed Number of Percent of U.S. Households in Type of Househol Households Dove Creek 102 26% Married with children 112 29% Married, no children Single parent 9% One person 25% 96 11% Other (e.g., roommates, siblings) 68 Use a 5% level of significance to test the claim that...
HW8-Practice: Problem 5 Problem Value: 1 point(s). Problem Score: 0%. Attempts Remaining: Unlimited. (1 point) A researcher is interested in whether the number of years of formal education is related to a person's decision to never smoke, continue to smoke, or quit smoking cigarettes. The data below represent the smoking status by level of education for residents of the United States 18 years or older from a random sample of 250 residents. Round all numeric answers to four decimal places....
Most questions answered within 3 hours.
-
Kylie is a single mom with two dependent children,
Tanner, age 7 and Olivia, age 11....
asked 26 minutes ago -
Phosphorous + bromine = phosphorous tribromide. If 35.0 g of
bromine are reacted and 27.9 grams...
asked 1 hour ago -
Derive the long wavelength limit of the Planck energy density
distribution
asked 1 hour ago -
Calculate the pH of each of the following solutions.
0.50 M HBr
3.1×10−4 M KOH
4.2×10−5...
asked 5 hours ago -
For the year ended December 31, Depot Max’s cost of merchandise
sold was $85,600. Inventory at the...
asked 5 hours ago -
Week 10 - Professional Memo Assignment
Professional Memo Assignment
Your mission for this week, should you...
asked 5 hours ago -
Write a Python program that stores the data for each
player on the team, and it...
asked 5 hours ago -
In
the last 3 months, mike never knows when he is going to get his
allowance...
asked 5 hours ago -
Is Ca(OH)2 a Bronsted base, Lewis base, or both? Why?
asked 5 hours ago -
1A- Why don’t voters complain about U.S. tariffs on imported
sugar?
Because sugar is only a...
asked 5 hours ago -
Cash Payback Period
Primera Banco is evaluating two capital investment proposals for
a drive-up ATM kiosk,...
asked 5 hours ago -
Create a button in Swift (Xcode) that will create a charge,
create a charge using Stripe's...
asked 5 hours ago