Calculus and Above

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Test the claim about the difference between two population
Test the claim about the difference between two population means and at the level of significance . Assume the samples are random and​ independent, and the populations are normally distributed.\ Kofi… read more
Kofi
PhD in Statistics
Ph.D.
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Determine whether a normal sampling distribution can be used
Determine whether a normal sampling distribution can be used for the following sample statistics. If it can be​ used, test the claim about the difference between two population proportions and at the … read more
Kofi
PhD in Statistics
Ph.D.
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Test the claim below about the mean of the differences for a
Test the claim below about the mean of the differences for a population of paired data at the level of significance . Assume the samples are random and​ dependent, and the populations are normally dis… read more
Kofi
PhD in Statistics
Ph.D.
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Test the claim about the difference between two population
Test the claim about the difference between two population means and at the level of significance . Assume the samples are random and​ independent, and the populations are normally distributed. Kofi… read more
Kofi
PhD in Statistics
Ph.D.
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Test the claim about the difference between two population
Test the claim about the difference between two population means and at the level of significance . Assume the samples are random and​ independent, and the populations are normally distributed. Kofi… read more
Kofi
PhD in Statistics
Ph.D.
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For the following​ information, determine whether a normal
For the following​ information, determine whether a normal sampling distribution can be​ used, where p is the population​ proportion, is the level of​ significance, is the sample​ proportion, and n is… read more
Kofi
PhD in Statistics
Ph.D.
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Decide whether the normal sampling distribution can be used.
Decide whether the normal sampling distribution can be used. If it can be​ used, test the claim about the population proportion p at the given level of significance using the given sample statistics. … read more
Kofi
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A New York charity recently did a fund raising campaign to
A New York charity recently did a fund raising campaign to support libraries. The following table gives the number of people who gave money at each fundraising level based on what region of the state … read more
Kimberley Wright
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Two plots at Rothamsted Experimental Station were studied
Two plots at Rothamsted Experimental Station were studied for production of wheat straw. For a random sample of years, the annual wheat straw production (in pounds) from one plot was as follows. 6.40 … read more
R.R. Jha
Bachelor's Degree
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Assume that the data has a normal distribution and the
Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z value used to test a null hypothesis. Alpha = 0.05 for a two-tailed test … read more
GLENN GILONGOS
Master of Mathematics
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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
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1. Use the information below to answer the question. The
1. Use the information below to answer the question. The following table provides data on a sample of customers who visited a local restaurant. The restaurant owner believes that the average profit pe… read more
Ryan
Bachelor's Degree
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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
Bachelor's Degree
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I need some statistic questions answered in the next hour and
I need some statistic questions answered in the next hour and 50 minutes. 1.Assume that you plan to use a significance level of α = 0.05 to test the claim that p1 = p2. Use the given sample sizes and … read more
Expert
1. Assume that the data has a normal distribution and the
1. Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z value used to test a null hypothesis. ALPHA = 0.05 for a left-tailed test. -… read more
Chirag
Master's Degree
10,329 satisfied customers
1. Suppose that you wish to perform a nonparametric test for
1. Suppose that you wish to perform a nonparametric test for a difference among the medians of three or more independent populations. Which of these tests would be appropriate? (Points : 5) ANOVA Krus… read more
SusanAthena
Master's Degree
Master's Degree
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I need help with homework questions. They are multiple choice
I need help with homework questions. They are multiple choice questions in intro to statistics and they have to be done today. They do not have to be perfect as you can redo the homework as many times… read more
Stevewh
Teacher
Bachelor's Degree
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) What are the critical z-values for a two-tailed hypothesis
) What are the critical z-values for a two-tailed hypothesis test if the significant level = 0.01? A. ± 1.96 B. ± 2.33 C. ± 2.58 D. ± 1.65 2) In classical hypothesis testing, the test statistic is to … read more
Chirag
Master's Degree
10,329 satisfied customers
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