Find if data indicate differences using hypothesis testing

Assignment Help Basic Statistics

Reference no: EM13116200

A psychologist would like to examine the relative effectiveness of three therapy techniques for treating mild phobias. A sample of N = 15 individuals who display a moderate fear of spiders is obtained. These individuals are randomly assigned (n = 5) to each of the three therapies. The dependent variable is a measure of reported fear of spiders after therapy. The data are as follows:

Therapy A Therapy B Therapy C
8 3 1
5 3 0
5 0 1
7 2 2
5 2 1

1. Use Hypothesis testing to determine if the data indicate that there are significant differences among the three therapies? Test at the .05 level of significance.
Step 1: State Hypothesis
Step 2: Set Criteria
Step 3: Compute Sample Statistic

Use excel to compute F value

Step 4: Make a decision
i. Did you reject the null/fail to reject the null
ii. State your conclusions in your own words

2. Based on the above results can you determine exactly which treatments are different?

Reference no: EM13116200

Questions Cloud

How will degradation affect the generation : Myelin is important for action potential propagation. Multiple sclerosis is an autoimmune disease where the myelin sheath surrounding CNS axons is progressively lost. How will this degradation affect the generation of action potentials?

Explain how much work does the gravitational force do : Explain how much work does the gravitational force do on the block as the block travels from point P to (a) point Q and (b) the top of the loop?

Compare the effects of this mutation : G-protein-linked receptors activate G proteins by reducing the strength of GDP binding. This results in rapid dissociation of abound GDP, which is then replaced by GTP, which is present in the cytosol in much higher concentrations than GDP.

Explain the differences between ethical and moral issues : Explain the differences between ethical issues and moral issues? What are the differences between personal ethics and business ethics?

Find if data indicate differences using hypothesis testing : Use Hypothesis testing to determine if the data indicate that there are significant differences among the three therapies? Test at the .05 level of significance.

Explain the construction of a electromagnetic velocity : Explain the construction of a electromagnetic velocity sensor and explain its working. In a bike speedometer the wheel diameter is 80cm what is the frequency of velocity sensor, which gives 1 pulse per rotation of wheel at a speed of 80Km/H?

Briefly explain bacterial disease, viral disease : Briefly explain bacterial disease, viral disease, fungal disease and parasitic disease, and give an example of each.

How much hydrogen is formed : Metallic magnesium reacts with steam to produce magnesium hydroxide and hydrogen gas. If 17.1 g of Mg are heated with 9 g of H2O, what is the limiting reactant.

Evaluate how many turns that each wheel would make : The brakes are applied and the bicycle is brought to a uniform speed. During braking , the bicycle covers a translational distance of 10m, Evaluate how many turns that each wheel would make during braking.

User Account

All Pages