Hypothesis testing of proortions-lovastatin

Assignment Help Basic Statistics

Reference no: EM13109645

Does lovastatin (a cholesterol-lowering drug) reduce the risk of heart attack? In a Texas study, researchers gave lovastatin to 2,325 people and an inactive substitute to 2,081 people (average age 58). After 5 years, 57 of the lovastatin group had suffered a heart attack, compared with 97 for the inactive pill.

a) State the appropriate hypotheses.

b) Obtain a test statistic and p-value. Interpret the results at ? = .01.

c) Is normality assured?

d) Is the difference large enough to be important?

e) What else would researchers need to know before prescribing this drug widely?

Reference no: EM13109645

Questions Cloud

Paried sample t test by using spss : A professor wants to determine if his class' anxiety decreases over the course of the semester. He uses a test to measure a random sample of all students enrolled at midterm and again at the end of the course.

How many of their sons would be color-blind : An achondroplastic male dwarf with normal vision marries a color-blind woman of normal height. The man's father was six-feet tall, and both the woman's parents were of average height. Achondroplastic dwarfism is autosomal dominant, and red-green c..

Discussion on delphi technique method : In the Delphi technique method a panel of individuals internal and external provide feedback, the individuals may not know who is on the panel with them as they never meet in person.

What is the genotype of the parents : If purple (P) is dominant to white (p) and axial (A) is dominant to terminal (a), and in a cross of white, axial to purple, axial the ratio of offspring is 3/8 white, axial; 1/8 white, terminal; 3/8 purple, axial; 1/8 purple, terminal, then what i..

Hypothesis testing of proortions-lovastatin : State the appropriate hypotheses. Obtain a test statistic and p-value. Interpret the results at ? = .01. Is normality assured? Is the difference large enough to be important?

Determine the test value for hypothesis : their average cost was 340.00 with standard deviation of 80.00. Dean of students thinks that costs are greater this semester. Determine the test value for this hypothesis.

Explain how the terms ancestral and derived differ : explain how the terms "ancestral" and "derived" differ from the terms "gained" and "lost." How can you have a character that is lost, but is the derived state of that trait?

What is the energy source for the flagellum : Describe the structure and function of a bacterial flagellum. What is the energy source for the flagellum? How do the flagella of bacteria differ from those of Achaea in both size and composition?

Likelihood ratio test of two beta density : Find the distribution of the test statistic when the null hypothesis is true, and then show how to get a test size alpha= 0.10

User Account

All Pages