Skip to content

Course home

Sign up

Regression, Correlation and Hypothesis Testing

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134
Question 98

Will sells cars. He thinks there is a positive correlation between the price of a car and its mileage.

He calculates the product moment correlation coefficient between these two variables for a random sample of 15 cars and obtains r=0.455r = 0.455r=0.455

Given that H0:ρ=0H_0: \rho = 0H0​:ρ=0, H1:ρ>0 H_1: \rho > 0\,H1​:ρ>0 and the critical value is 0.4409, carry out the test at a 5% level of significance.

State clearly

  • the value of the test statistic
  • your conclusion.
[3]
Markscheme

Regression, Correlation and Hypothesis Testing Questions

  1. A Level
  2. /Maths
  3. /Regression, Correlation and Hypothesis Testing

340 exam-style questions on Edexcel A Level Maths Regression, Correlation and Hypothesis Testing, covering 1.1 Exponential Models, 1.2 Measuring Correlation, and 1.3 Hypothesis Testing for Zero Correlation. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank