Letx be a random variable that represents the pH of arterial plasma (i.e., acidity of the blood). For healthy adults, the mean of thex distribution is μ = 7.4.† A new drug for arthritis has been developed. However, it is thought that this drug may change blood pH. A random sample of 31 patients with arthritis took the drug for 3 months. Blood tests showed that x = 8.8 with sample standard deviations= 3.3. Use a 5% level of significance to test the claim that the drug has changed (either way) the mean pH level of the blood.
Already registered? Login
Not Account? Sign up
Enter your email address to reset your password
Back to Login? Click here