hyposthesis

  1. K

    Hypothesis Testing

    Hi guys! I have a statistics question that I am completely stumped with: From a sample of people (n=36), with certain eating habits, a mean cholesterol value of 4.1 mmol/l was calculated. From a medical reference table, it is shown that 95% of all values are between 3.2 – 6.2 mmol/l for the...
  2. D

    Which statistical test do I need to use?

    I have a dataset showing the yearly stock returns for two investment styles (growth and value investing) as well as a column showing the difference between the returns for each year. I have attached a picture below. I want to do a test to see if the difference is significant for each individual...
  3. I

    Significancy test

    Hello, suppose i have example of buyer's age from 3 product Notebook:35,25,40,30 Smartphone:20,21,25,30,25 Watch:35,20,30,45,35 I want to make a hypothesis like this: "Is buyer's age will significanly affect product choices?" So the questions: 1. I confuse how to choose independent variable...
  4. E

    Two-sided test Hypothesis

    2. In 18 patients with Everley's syndrome, the mean level of plasma phosphate was 1.7 mmol/l (millimoles per liter) with a standard deviation of 0.8 mmol/l. If the mean level in the general population is 1.2 mmol/l, is there a statistically significant difference between the general population...
  5. K

    Testing for two means

    I am doing practice questions for hypothesis testing, for two means, n is large. I know the test stat for two means. H0: Mu1 - Mu2 = 0, Ha: Mu1 - Mu 2 > 0 The data is: Male: X: 6.8, s: 6.6, n: 291 Female: X: 2.4, s: 4.5, n: 519 After doing the problem, the answer I received was...