07/08/21

How do I go about this? And what statistical test can I use?

Hi,I’m currently doing a science project on sickle cell disease, I’m researching to see how a well a few drugs can induce fetal haemoglobin in sickle cell disease patients. Currently what I’ve done... more
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07/21/20

In 2016, the city of Rio de Janeiro had a population density of 5377 people/km^2. What was the population density of Rio de Janeiro in people per square meter?
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07/21/20

Introduction to Stats
Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean of 0°C and a standard deviation of 1.00°C. A single thermometer is randomly selected and tested.... more
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06/26/20

experiments under natural conditions- randomisation, experimetal units (N)
Hello,I have question regarding to a research paper. In this reseach paper they test whether the probiotic supplementation to the diet affects the growth performance and immune responses of... more
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06/23/20

Need help with psych stats question solved equation already but wording is weird.
Hi I need assistance with the following question: 4.) According to your Z score and your friend's Z score, who has more kids relative to your group?Not really sure what is being asked here- my... more
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06/08/20

Identify the p-value and identify the conclusion for this hypothesis test
Consider a drug testing company that provides a test for marijuana usage. Among 303 tested​ subjects, results from 27 subjects were wrong​ (either a false positive or a false​ negative). Use a 0.10... more
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R

10/08/19

ggplot2 line chart gives "geom_path: Each group consist of only one observation. Do you need to adjust the group aesthetic?"?
With this data frame ("df"): year pollution 1 1999 346.82000 2 2002 134.30882 3 2005 130.43038 4 2008 88.27546I try to create a line chart like this: plot5 <- ggplot(df,... more
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11/13/16

word problem
Leila earned $40.50 Raking leaves in two days. She worked 2.75 hours yesterday and 1.75 hours today. If Leila was paid the same amount for every hour she worked, how much did she earn per hour?
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11/13/16

A restaurant bill comes to $42.75. Suppose the sales tax is 6% and a 15% tip is left on the amount after the tax is added. How much did the customer pay?
Please help me with my math homework!!!!  
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