Calculus and Above

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ARE THERE CHARGES IN VOLVED, According to a​ research,
According to a​ research, 52.052.0​% of households nationwide used natural gas for heating during a year.​ Recently, a survey of 2 comma 3002,300 randomly selected households showed that 53.053.0​% used natural gas. Use a 0.05 significance level to test the claim that the 52.052.0​% national rate has changed. Formulate the null and alternative hypotheses. Choose the correct answer below. A. Upper H 0H0​: pnot equals≠0.520.52​, Upper H Subscript aHa​: pequals=0.520.52 B. Upper H 0H0​: pgreater than>0.520.52​, Upper H Subscript aHa​: pless than<0.520.52 C. Upper H 0H0​: pequals=0.520.52​, Upper H Subscript aHa​: pgreater than>0.520.52 D. Upper H 0H0​: pequals=0.520.52​, Upper H Subscript aHa​: pnot equals≠0.520.52 Find the test statistic. zequals= nothing ​(Round to one decimal place as​ needed.) Find the​ P-value for the found test statistic. ​P-valueequals= nothing ​(Round to four decimal places as​ needed.) Now make a conclusion. Choose the correct answer below. A. There is not enough information to make a conclusion. B. There is not sufficient evidence to support the claim that the percentage of households using natural gas has changed. C. There is sufficient evidence to support the claim that the percentage of households using natural gas has changed … read more
GLENN GILONGOS
GLENN GILONGOS
Master of Mathematics
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5. Of 84 adults selected randomly from one town, 62 have health
5. Of 84 adults selected randomly from one town, 62 have health insurance. Find a 90% confidence interval for the true proportion of all adults in the town who have health insurance. A. 0.626… read more
StatisticsExpert
StatisticsExpert
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Doctoral Degree
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FOR MR. WHITE b. Interpret the interval in terms of this application.
FOR MR. WHITE b. Interpret the interval in terms of this application. Choose the correct answer below: A. The water department can be 90% confident that the mean lead level of drinking water for all r… read more
Stevewh
Stevewh
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1. A random sample of 92 observers produced a mean X = 25.8
1. A random sample of 92 observers produced a mean X = 25.8 and a standard deviation s = 2.6. a) Find a 95% confidence interval for 11. b) Find the 90% confidence interval for Jl c) Find the 99% confi… read more
Ryan
Ryan
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Use the given information to find the P-value. Also, use a
Use the given information to find the P-value. Also, use a 0.05 significance level and state the conclusion about the null hypothesis (reject the null hypothesis or fail to reject the null hypothesis)… read more
Ryan
Ryan
Bachelor's Degree
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1.)Based on a study of heights of men and women wh play basketball,
1.)Based on a study of heights of men and women wh play basketball, a researcher concludes that the exercise from playing basketball causes people to grow taller. Do you agree with the conclusion? Cho… read more
Stevewh
Stevewh
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A sample of 120 U.S. households has a mean computer usage time
A sample of 120 U.S. households has a mean computer usage time of 19.2 hours per week with a sample standard deviation of 3.3 hours. Find a 99% confidence interval for the mean computer usage time of … read more
Stevewh
Stevewh
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"For Guru2009 only" 1. A random sample of fifty-five 200-meter
"For Guru2009 only" 1. A random sample of fifty-five 200-meter swims has a mean time of 3.98 minutes and a standard deviation of 0.06 minutes. Construct a 905 confidence interval for the population me… read more
Chirag
Chirag
Master's Degree
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Please help with these 17 questions!! 1. Find the margin of
Please help with these 17 questions!! 1. Find the margin of error for the given values of c,s,and n. c=0.90,s=2.9,n=100 2. Construct the confidence interval for the population mean u. c=0.98,x=8.4,s=0… read more
Chirag
Chirag
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Nationwide, 68% of American adults own a cell phone . Let
Nationwide, 68% of American adults own a cell phone . Let us define "owning a cell phone" as the desired trait within a study and suppose that a random sample of 5 American adults is taken. Answer the… read more
Stevewh
Stevewh
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1) Question 1 (Q3)- a random sample of n=100 observations is
1) Question 1 (Q3)- a random sample of n=100 observations is selected from a population with µ=30 and o=23. Approximate the probabilities shown below. a. P(x̄ ≥28 b. P(22.1≤ x̄ ≤ 26.8) c. P(x̄≤ 28.2) … read more
Trigeoscal
Trigeoscal
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how do i get answers to things already posted? http://www
how do i get answers to things already posted? http://www.justanswer.com/calculus-and-above/668dd-stats-questions-1-assume-sample-selected.html?txsid=16564309&opt=10&archiveid=10368481&viewquestion=69… read more
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Stevewh
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CASE STUDY EXERCISE 2: Individual incomes. The Data Appendix
CASE STUDY EXERCISE 2: Individual incomes. The Data Appendix describes the file individuals, which contains the total incomes of 55,899 people between the ages of 25 and 65. We will illustrate samplin… read more
Chirag
Chirag
Master's Degree
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Find the margin of error for the given values of c, s, and
Find the margin of error for the given values of c, s, and n. C=0.90, s=3.9, n=49 E=_________ (Round to three decimal places as needed) Construct the confidence interval for the population mean µ. C= … read more
Chirag
Chirag
Master's Degree
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16. In a survey of 630 males ages 18-64, 391 say they have
16. In a survey of 630 males ages 18-64, 391 say they have gone to the dentist in the past year. Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and com… read more
Sandhya_sharma
Sandhya_sharma
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Exercise 1 Given a binomial random variable with n=10 and
Exercise 1 Given a binomial random variable with n=10 and p=.3, Use the formla to find the following probabilities. a. P(X = 3) b. P(X = 5) c. P(X = 8) Exercise 2 In the United States, voters who are … read more
SusanAthena
SusanAthena
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Master's Degree
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Stats Questions,1. Assume a sample has been selected at
Stats Questions, 1. Assume a sample has been selected at random from a large population. Which of the following five statements is correct. A. The standard error equals the standard deviation of the s… read more
R.R. Jha
R.R. Jha
Bachelor's Degree
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"StatsPro" next group for my test 11. Which of the following
"StatsPro" next group for my test 11. Which of the following statements are true? (Check one) I. A sample survey is an example of an experimental study. II. An observational study requires fewer resou… read more
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