Calculus and Above

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1. What are the null and alternative hypotheses for this
1. What are the null and alternative hypotheses for this analysis? 2. In a few sentences, describe the descriptive data for each ethnicity/race group (include N, mean, standard deviation, minimum, & m… read more
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53% of students entering four-year colleges receive a degree
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You are conducting a study to see if the proportion of
You are conducting a study to see if the proportion of voters who prefer Candidate A is significantly different from 52% at a significance level of α= 0.01. According to your sample, 32 out of 66 pote… read more
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For the statement​ below, write the claim as a mathematical
For the statement​ below, write the claim as a mathematical statement. Use proportions to state the null and alternative​ hypotheses, and identify which represents the claim. According to a recent​ su… read more
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For the statement​ below, write the claim as a mathematical
For the statement​ below, write the claim as a mathematical statement. State the null and alternative hypotheses and identify which represents the claim. A laptop manufacturer claims that the mean lif… read more
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Statistics: A security expert claims that ​% of all
Statistics: A security expert claims that ​% of all homeowners have a home security alarm. State and in words and in symbols. Then determine whether the hypothesis test for this claim is​ left-tailed,… read more
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A security expert claims that ​% of all homeowners have a
A security expert claims that ​% of all homeowners have a home security alarm. State and in words and in symbols. Then determine whether the hypothesis test for this claim is​ left-tailed, right-taile… read more
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It is claimed that 65% of college students own an iPad. You
It is claimed that 65% of college students own an iPad. You believe a different proportion of college students own an iPad. Your null and alternative hypotheses are below. What is wrong with these hyp… read more
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Several years​ ago, 3535​% of parents who had children in
Several years​ ago, 3535​% of parents who had children in grades​ K-12 were satisfied with the quality of education the students receive. A recent poll asked 1 comma 1451,145 parents who have children… read more
Kofi
PhD in Statistics
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For students who first enrolled in two year public
For students who first enrolled in two year public institutions in a recent​ semester, the proportion who earned a​ bachelor's degree within six years was 0.3850.385. The president of a certain colleg… read more
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For students who first enrolled in two year public
For students who first enrolled in two year public institutions in a recent​ semester, the proportion who earned a​ bachelor's degree within six years was 0.3950.395. The president of a certain colleg… read more
Kofi
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Cody is an environmental scientist inquiring about the
Cody is an environmental scientist inquiring about the percentage of deer ticks in a certain national park that are infected with Lyme disease. He suggests that more than 28% of the deer ticks in the … read more
Kofi
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A decade-old study found that the proportion of high school
A decade-old study found that the proportion of high school seniors who felt that "getting rich" was an important personal goal was 69%. Suppose that we have reason to believe that this proportion has… read more
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Doctoral Degree
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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. Suppose 63 of 110 randomly selected shoppers believe that
1. Suppose 63 of 110 randomly selected shoppers believe that “Made in USA” means that 100% of labor and materials are from the United States. Let p represent the true proportion of consumers who belie… read more
Ryan
Bachelor's Degree
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A sample of 25 different payroll departments found that the
A sample of 25 different payroll departments found that the employees worked an average of 310.3 days a year with a standard deviation of 23.8 days. What is the 95% confidence interval for the average… read more
Stevewh
Teacher
Bachelor's Degree
6,427 satisfied customers
how do I write a null and 1/2 tail hypotheses for this statement: "Fish
how do I write a null and 1/2 tail hypotheses for this statement: "Fish will die without water"… read more
Trigeoscal
College Math Professor
Master's Degree
960 satisfied customers
a bank conducts a survey in which it randomly samples 400 of
a bank conducts a survey in which it randomly samples 400 of its customers. The survey asks the customers which way they use the bank the most: (1) interacting with a teller at the bank, 2) using ATM'… read more
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