Calculus and Above

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An IQ test is designed so that the mean is 100 and the
An IQ test is designed so that the mean is 100 and the standard deviation is 20 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students… read more
GLENN GILONGOS
Master of Mathematics
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In a study of government financial aid for college​
In a study of government financial aid for college​ students, it becomes necessary to estimate the percentage of​ full-time college students who earn a​ bachelor's degree in four years or less. Find t… read more
GLENN GILONGOS
Master of Mathematics
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I need assistance understanding and completing this question
i need assistance understanding and completing this question 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… 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
Master of Mathematics
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I need help with answers multiple choice questions in
I need help with answers for 21 multiple choice questions in Statistics. How much will it cost for these 21 questions and how quickly can they be answered?… read more
GLENN GILONGOS
Master of Mathematics
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MULTIPLE CHOICE. MUST SHOW WORK FOR ENTIRE QUIZ. 1. (5 points)
MULTIPLE CHOICE. MUST SHOW WORK FOR ENTIRE QUIZ. 1. (5 points) Of 84 adults selected randomly from one town, 62 have health insurance. Find a 90% confidence interval for the true proportion of all adu… read more
Ryan
Bachelor's Degree
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2. The mean diameter of a ball bearing produced by a certain
2. The mean diameter of a ball bearing produced by a certain manufacturer is 0.80 cm with a population standard deviation of 0.03 cm. A sample of 36 ball bearings is randomly selected from a productio… read more
Stevewh
Teacher
Bachelor's Degree
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What is the population, the sample, the statistic, and the
Answer any 3 of these question What is the population, the sample, the statistic, and the parameter in the studies described below? What type of data was gathered or will be gathered in the study? 1. … read more
Ray Atkinson
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
Teacher
Bachelor's Degree
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MULTIPLE CHOICE. Choose the one alternative that best completes
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1. (5 points) Of 84 adults selected randomly from one town, 62 have health insurance. Find a 90% … read more
Ryan
Bachelor's Degree
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NBC TV news, in a segment on the price of gasoline
1. NBC TV news, in a segment on the price of gasoline, reported last evening that the mean price nationwide is \$1.50 per gallon for self-serve regulate unleaded. A random sample of 35 stations in the … read more
Stevewh
Teacher
Bachelor's Degree
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1. In order to identify baby growth patterns that are unusual,
1. In order to identify baby growth patterns that are unusual, we need to construct a confidence interval estimate of the mean head circumference of all babies that are 2 months old. A random sample o… read more
Stevewh
Teacher
Bachelor's Degree
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Hi is possible to have all work explained in an excel spreadsheet
Hi is possible to have all work explained in an excel spreadsheet with formulas so I can understand it better? Thanks Customer Question 1. Classify the following studies as descriptive or inferential … read more
Stevewh
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Bachelor's Degree
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1. Classify the following studies as descriptive or inferential
1. Classify the following studies as descriptive or inferential and explain your reasons: a. (1 pts.) A study on stress concluded that more than half of all Americans older than 18 have at least “mode… read more
Math-John
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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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13. A researcher is interested in whether herbal remedies are
13. A researcher is interested in whether herbal remedies are effective in relieving allergies, and if so, which ones are most effective. The researcher takes a group of 20 allergy sufferers and rando… read more
Math-John
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For osbert12: In a survey of 1,006 people, 695(or 69%) said
For osbert12: In a survey of 1,006 people, 695(or 69%) said that they voted in a particular presential election. The margin of error for this survey was 4 percentage points. However, actual voting rec… read more
Stevewh
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Explain these concepts: 1. Degree of freedom 2. Critical
Explain these concepts: 1. Degree of freedom 2. Critical values for Z and t test 3. Z - test and t-test… read more
Ryan
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