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A study was designed to investigate the effects of two variables - (1) a student's level of mathematical anxiety and (2) teaching method - on a student's achievement in a mathematics course. Students who had a low level of mathematical anxiety were taught using the traditional expository method.These students obtained a mean score of 420 and a standard deviation of 40 on a standardized test. Find and interpret the z-score of a student who scored 460 on the standardized test.
Calculation for Discrete Series or Ungrouped Data The formula for computing mean is = where, f = fr
method for solving assingnment problem
in a normal distribution with a mean of 85 and a STD of 5, what is the percentage of scores between 75 and 90?
i need to solve couple questions on a data set ?
How to a calculate the combined standard deviation for five groups (samples)?
Types of cost-reimbursable contracts are: Cost Plus Fixed Fee contract (CPPF): Compensation is based on a fixed sum independent of the final project cost. The customer a
Ask Describe What-if Analysis
According to a recent study, when shopping online for luxury goods, men spend a mean of $2,401, whereas women spend a mean of $1,527. Suppose that the study was based on a sample o
The file Midterm Data.xls has a tab labeled "Income Data 2009". This data is collected income data from a sample of 400 people in 2009. Use a hypothesis test to see whether the av
what are characteristics of a population for which it would be appropiate to use mean/median/mode
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