Calculus and Above

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Im trying to figure out how to plug into stat crunchThe
Im trying to figure out how to plug into stat crunchThe claim is that the IQ scores of statistics professors are normally​ distributed, with a mean less than 131. A sample of 18 professors had a mean … read more
Sandhya_sharma
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The certifying agency has published the results of the exam
The certifying agency has published the results of the exam and 75% of the test takers scored below the average. In a normal distribution, half of the scores would fall above the mean and the other ha… read more
GLENN GILONGOS
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Im having issues with my stat homework. So the question is
ok so the question is find the minimal sample size required so that for a 90% confidence interval, the maximal margin of error is E=0.5 … read more
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R.R. Jha
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I am taking a BioStatistics class and am having difficulty.
I am taking a BioStatistics class and am having difficulty. A quit scenario, coloring materials giving to family members in surgery waiting room, anxiety scale completed, and asked how many minutes sp… read more
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Is there a way to request Ryan? He has worked on similar
Hi, is there a way to request Ryan? He has worked on similar questions. Hi Ryan,I have two questions that ask to identify which statements is false:Question 1: (a) An accurate sampling distribution fo… read more
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GLENN GILONGOS
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1. Find the indicated z score. The graph depicts the
1. Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and standard deviation 1. The indicated z score is? (Round to two decimal places as needed.) 2. Assume tha… read more
GLENN GILONGOS
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Im trying to help my sister who is in college with a
Hey im trying to help my sister who is in college with a statistics question. I thought i could help but i cant … read more
GLENN GILONGOS
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It's a question on my stats quiz that I can't get. Should
it's a question on my stats quiz that I can't get. Should the statistician use a t distribution, a normal distribution, or neither to test the null hypothesis?The sample mean (x-bar) for a data set is… read more
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3. The distribution of SAT scores on the math section is
3. The distribution of SAT scores on the math section is normal with u=500 and o=100. … read more
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I have data that was fit to a lognormal distribution (as
I have data that was fit to a lognormal distribution (as expected; k-s & 2 other tests support thru p values)in SAS Ent Guide. Theta was not set at 0, it was estimated & reported in the output. I am i… read more
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hello I need help with QNT 561. I need toperform a
hello I need help with QNT 561. Create a Microsoft® Excel® spreadsheet with the two variables from your learning team's dataset. Analyze the data with MegaStat®, StatCrunch®, Microsoft® Excel®or other… read more
Mr. Gregory White
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Master's Degree
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1. Glucose levels in patients free of diabetes are assumed
1. Glucose levels in patients free of diabetes are assumed to follow a normal distribution with a mean of 120 and a standard deviation of 16. a) What proportion of patients have glucose levels exceedi… read more
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1. Glucose levels in patients free of diabetes are assumed
1. Glucose levels in patients free of diabetes are assumed to follow a normal distribution with a mean of 120 and a standard deviation of 16. a) What proportion of patients have glucose levels exceedi… read more
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The resting heart rate for an adult horse should average about
The resting heart rate for an adult horse should average about 45 beats per minute with a (95% of data) range from 22 to 70 beats per minute, based on information from The Merck Veterinary Manual (a c… read more
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Must Show work need it now 7 questions 1. Identify H0 and
Must Show work need it now 7 questions 1. Identify H0 and H1 the proportion of people aged 18-25 who currently use illicit drugs is equal to 20% 2. Finding Test statistic z, the claim is more than 75%… read more
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from a population that is normally distributed with an unknownn
from a population that is normally distributed with an unknownn standard deviation, a sample of 25 elements is selected. For the interval estimation of μ, what is the proper distribution to use?… read more
Expert
Expert
Medical stats help needed If you have a large number (71)
Medical stats help needed: If you have a large number (71) in each group , can you use a parametric test (paired t-test) even if you are unsure of a gaussian distribution? Would you then also be justi… read more
Expert
Expert
Can an appropriate bell curve be set up when your normal distribution
Can an appropriate bell curve be set up when your normal distribution is normal methadone doses?… read more
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Expert
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