Calculus and Above

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In a crash test measurements test, seven chest deceleration
In a crash test measurements test, seven chest deceleration measurements have a sample mean of 42.7 g and sample standard deviation 5.6 g, where g is a force of gravity. Construct a 95% confidence int… read more
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Neo: By the time I could get back to this project, your
Hi Neo: By the time I could get back to this project, your answer timed out. So here is my question: Question is that there are two types of doing a study on an epilepsy patient. Type 1 is a newer met… read more
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Scott, Last question please, In performing a chi-square
Hi Scott,Last question please, In performing a chi-square goodness-of-fit test for a normal distribution, a researcher wants to make sure that all of the expected cell frequencies are at least five. T… read more
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According to the U.S. Census Bureau, in 2014, 60% of
According to the U.S. Census Bureau, in 2014, 60% of Americans age 18 and older were married. A recent sample of 1500 Americans age 18 and older showed that 58% of them are married. Set up hypothesis:… read more
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I was given a data set, and the first question I have to
Hi! So I was given a data set, and the first question I have to work with says students were asked what their goals were for school. They could either say Sports, Popularity, or Grades. I have to show… read more
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The claim is that the IQ scores of statistics professors are
The claim is that the IQ scores of statistics professors are normally​ distributed, with a mean greater than 127. A sample of 21 professors had a mean IQ score of 128 with a standard deviation of 2. F… read more
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Let x = age in years of a rural Quebec woman at the time of
Let x = age in years of a rural Quebec woman at the time of her first marriage. In the year 1941, the population variance of x was approximately σ2 = 5.1. Suppose a recent study of age at first marria… read more
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What is your favorite color? A large survey of countries,
What is your favorite color? A large survey of countries, including the United States, China, Russia, France, Turkey, Kenya, and others, indicate that most people prefer the color blue. In fact, about… read more
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I need assistance with this Statistic project...I'm failing the class
I need assistance with this Statistic project...I'm failing the class and can't afford for that to happen… read more
Ryan
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I need help whit the following 10 questions. 1. The probability
I need help whit the following 10 questions. 1. The probability that the actual population mean will be outside of the 98% confidence interval is: 1 % 2 % 4 % 5 % 2. The Chi-square test is very sensit… read more
SusanAthena
Master's Degree
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The questions that I need answer are already on the site just
The questions that I need answer are already on the site just need the answers for 1. The Chi-square test is very sensitive to small differences in frequency differences. (Points : 1) True False Quest… read more
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1. Point estimates provide less confidence in indicating a
1. Point estimates provide less confidence in indicating a parameter's value than a confidence interval. True False 2. Confidence intervals provide an indication of how much variation exists in the da… read more
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1. The Chi-square test is very sensitive to small differences
1. The Chi-square test is very sensitive to small differences in frequency differences. (Points : 1) True False Question 2. 2. The probability that the actual population mean will be outside of a 98% … read more
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1) 5 students from each class were randomly selected from
1) 5 students from each class were randomly selected from all 44 different undergraduate classes in the Eberly College of Science at Penn State. The 220 undergraduate students completed an anonymous s… read more
SusanAthena
Master's Degree
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2) We are given the following 5 number summary for GPA Minimum Lower
2) We are given the following 5 number summary for GPA Minimum Lower quartile QL Median Upper quartile QU maximum 1.67 2.98 3.30 3.625 4.00 a. What percent of the data lies within the interval 1.67 to… read more
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If you recall from Chapter 5, sample statistics (sample mean
If you recall from Chapter 5, sample statistics (sample mean and sample standard variation) are dependent or vary by sample. For example, the sample mean number of plain M&M candies in a 1.69 oz bag w… read more
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I know the shape of the distribution of sample means is not
I know the shape of the distribution of sample means is not always that of an approximately normal distribution, but how do I explaine why?… read more
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Final question: A random sample of 15 snowmobiles was selected,
Final question: A random sample of 15 snowmobiles was selected, and the lifetime (in months) of the batteries was measured. The variance of the sample was 8.6. Find the 90% confidence interval of the … read more
Sandhya_sharma
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