According to a Louis Harris survey, 489 in a sample of 980 female drivers reported that...
According to a Louis Harris survey, 489 in a sample of 980 female drivers reported that they never speed, while 533 in a sample of 1170 male drivers report that they never speed. The null hypothesis is that the proportions of all female and male drivers who never speed are the same. The alternative hypothesis is that the proportion of female drivers who never speed is higher than the proportion of male drivers who never speed. The significance level is 1%.
What is the 99% confidence interval for the difference between the proportions of female and male drivers who state that they never speed, rounded to four decimal places? The lower limit is -0.0123 . The upper limit is 0.0992.
What is the critical value of z for the hypothesis test? 2.33
What is the value of the pooled sample proportion, rounded to four decimal places? 0.4753
What is the value of the test statistic, z, rounded to three decimal places? 2.008
What is the p-value for this test, rounded to four decimal places? 0.0223
Do you reject or fail to reject the null hypothesis? Fail to reject.
These are the solutions could someone show the work to reach them I'm not sure.
Homework Answers
Add Answer to:
According to a Louis Harris survey, 489 in a sample of 980
female drivers reported that...
chapter 10 question 009-13 100-105 Chapter 10, Testbank, Question 009-013 A sample of S2 female workers...
chapter 10 question 009-13
100-105
Chapter 10, Testbank, Question 009-013 A sample of S2 female workers and another sample of 64 male workers from a state produced mean weekly earnings of $742.49 for the females and $764.78 for the males. Suppose that the standard deviations of the weekly earnings are $86.88 for the females and $96.38 for the males. The null hypothesis is that the mean weekly earnings are the same for females and males, while the alternative hypothesis is...
(1 point) Do male and female skiers differ in their tendency to use a ski helmet?...
(1 point) Do male and female skiers differ in their tendency to use a ski helmet? Ruzic and Tudor (2011) report a study in which 710 skiers completed a survey about aspects of their skiing habits. Suppose the results from the question on the survey about ski helmet usage were as follows: Helmet Usage Never Occasionally 242 Gender Always 180 72 Male Female 82 Ruzic, L. and Tudor, A. (2011): Risk-taking behaviour in skiing among helmet wearers and nonwearers. Wilderness...
(1 point) Do male and female skiers differ in their tendency to use a ski helmet?...
(1 point) Do male and female skiers differ in their tendency to use a ski helmet? Ruzic and Tudor (2011) report a study in which 710 skiers completed a survey about aspects of their skiing habits. Suppose the results from the question on the survey about ski helmet usage were as follows: Helmet Usage Never Occasionally Always 241 84 169 106 31 79 Gender Male Female Ruzic, L. and Tudor, A. (2011): Risk-taking behaviour in skiing among helmet wearers and...
Based on information from a previous study, r = 34 people out of a random sample...
Based on information from a previous study, r = 34 people out of a random sample of n = 101 adult Americans who did not attend college believe in extraterrestrials. However, out of a random sample of n2 = 101 adult Americans who did attend college, '2 = 47 claim that they believe in extraterrestrials. Does this indicate that the proportion of people who attended college and who believe in extraterrestrials is higher than the proportion who did not attend...
Results on seat belt usage from the 2003 Youth Risk Behavior Survey were published in a...
Results on seat belt usage from the 2003 Youth Risk Behavior Survey were published in a USA Snapshot on January 13, 2005. The following table outlines the results from the high school students who were surveyed in the state of Nebraska. They were asked whether or not they rarely or never wear seat belts when riding in someone else's car. Using α = .05, does this sample present sufficient evidence to reject the hypothesis that gender is independent of seat...
(Refer to HW6 #6) According to a survey, 73 males out of 786 and 43 females...
(Refer to HW6 #6) According to a survey, 73 males out of 786 and 43 females out of 943 report that they usually drive 10 or more miles per hour over the speed limit in Kansas City. We are interested in comparing the proportion of male speeders with the proportion of the female speeders. Is the proportion of male speeders higher than the proportion of female speeders? Perform a hypothesis testing at 6% significance level by answering the following questions....
A sample of 308 urban adult residents of a particular state revealed 59 who favored increasing...
A sample of 308 urban adult residents of a particular state revealed 59 who favored increasing the highway speed limit from 55 to 65 mph, whereas a sample of 186 rural residents yielded 75 who favored the increase. (a) Calculate the point estimate and margin of error for a 95% confidence interval for the difference in parameters P1-p2, where pi refers to the true proportion of the urban population that favors increasing the speed limit and p2 refers to the...
A sample of 276 urban adult residents of a particular state revealed 61 who favored increasing...
A sample of 276 urban adult residents of a particular state revealed 61 who favored increasing the highway speed limit from 55 to 65 mph, whereas a sample of 188 rural residents yielded 70 who favored the increase. (a) Calculate the point estimate and margin of error for a 95% confidence interval for the difference in parameters P1 - P2, where P1 refers to the true proportion of the urban population that favors increasing the speed limit and P2 refers...
Consider the following null and alternative hypotheses: Ho: p=0.76 versusH1: p≠ 0.76 A random sample of...
Consider the following null and alternative hypotheses: Ho: p=0.76 versusH1: p≠ 0.76 A random sample of 525 observations taken from this population produced a sample proportion of 0.80. a. If this test is made at a 5% significance level, would you reject the null hypothesis? Use the critical-value approach. Round your answer for z to two decimal places. z(observed)= z critical left= z critical right= We reject/fail to reject null hypothesis b. What is the probability of making a Type...
A Gallup poll to survey the top concerns of Americans was conducted. Suppose that 743 women...
A Gallup poll to survey the top concerns of Americans was conducted. Suppose that 743 women and 713 men were independently and randomly selected, and that 383 women and 282282 men chose the state of the economy as their biggest concern. Can we conclude that the proportion of women ( p1 ), choosing the state of the economy as their biggest concern, exceeds the proportion of men ( p2 )? Use a significance level of α=0.1 for the test. Step 1...
chapter 10 question 009-13
100-105
Chapter 10, Testbank, Question 009-013 A sample of S2 female workers and another sample of 64 male workers from a state produced mean weekly earnings of $742.49 for the females and $764.78 for the males. Suppose that the standard deviations of the weekly earnings are $86.88 for the females and $96.38 for the males. The null hypothesis is that the mean weekly earnings are the same for females and males, while the alternative hypothesis is...
(1 point) Do male and female skiers differ in their tendency to use a ski helmet? Ruzic and Tudor (2011) report a study in which 710 skiers completed a survey about aspects of their skiing habits. Suppose the results from the question on the survey about ski helmet usage were as follows: Helmet Usage Never Occasionally 242 Gender Always 180 72 Male Female 82 Ruzic, L. and Tudor, A. (2011): Risk-taking behaviour in skiing among helmet wearers and nonwearers. Wilderness...
(1 point) Do male and female skiers differ in their tendency to use a ski helmet? Ruzic and Tudor (2011) report a study in which 710 skiers completed a survey about aspects of their skiing habits. Suppose the results from the question on the survey about ski helmet usage were as follows: Helmet Usage Never Occasionally Always 241 84 169 106 31 79 Gender Male Female Ruzic, L. and Tudor, A. (2011): Risk-taking behaviour in skiing among helmet wearers and...
Based on information from a previous study, r = 34 people out of a random sample of n = 101 adult Americans who did not attend college believe in extraterrestrials. However, out of a random sample of n2 = 101 adult Americans who did attend college, '2 = 47 claim that they believe in extraterrestrials. Does this indicate that the proportion of people who attended college and who believe in extraterrestrials is higher than the proportion who did not attend...
A sample of 308 urban adult residents of a particular state revealed 59 who favored increasing the highway speed limit from 55 to 65 mph, whereas a sample of 186 rural residents yielded 75 who favored the increase. (a) Calculate the point estimate and margin of error for a 95% confidence interval for the difference in parameters P1-p2, where pi refers to the true proportion of the urban population that favors increasing the speed limit and p2 refers to the...
A sample of 276 urban adult residents of a particular state revealed 61 who favored increasing the highway speed limit from 55 to 65 mph, whereas a sample of 188 rural residents yielded 70 who favored the increase. (a) Calculate the point estimate and margin of error for a 95% confidence interval for the difference in parameters P1 - P2, where P1 refers to the true proportion of the urban population that favors increasing the speed limit and P2 refers...
Most questions answered within 3 hours.
-
which of the following is capital?
the barn a farmer uses to hold the chickens he...
asked 1 minute ago -
10. Two forces act on a 3 kg object, the gravitational force and
a second, constant...
asked 11 minutes ago -
Dividing Partnership Net Loss
Leigh Meadows and Byron Leef formed a partnership in which the
partnership...
asked 8 minutes ago -
Discuss how Entrepreneurial leadership style differs
from traditional leadership?
asked 34 minutes ago -
A futuristic design for a car is to have a large solid
disk-shaped flywheel within the...
asked 32 minutes ago -
Solid NaOH is added to a solution of 0.50 M acetic acid until
the pH of...
asked 35 minutes ago -
Which of the following statements is not a characteristic of the
Internal Revenue Code?
A) The...
asked 43 minutes ago -
Say true or false and explain it.
A heap is represented using an array. The array...
asked 53 minutes ago -
Explain how the DNA replication enzyme complex is organized and
functions, please don't copy paste from...
asked 52 minutes ago -
how
can personality contribute to one scoring high on the need to
evaluate measurement by Jarvis?
asked 53 minutes ago -
A high jumper is attempting to jump over a crossbar that is
placed at a height...
asked 58 minutes ago -
1.
A hemophiliac male mates with a healthy female. what are the
possible genotypes for the...
asked 1 hour ago