Chi-squared a study is designed to investigate whether, Ask an Expert

Statistics

Chi-squared: A study is designed to investigate whether there is a difference in response to various treatments in patients with rheumatoid arthritis. The outcome is patient's self-reported effect of treatment into 1 of 3 categories. The data are shown below. Is there a significant difference in effect of treatment? Run the test at a 5% level of significance. What is the expected value for those people in treatment 1 whose symptoms worsened? Accept or Reject the H₀?

	Symptoms Worsened	No Effect	Symptoms Improved	Total
Treatment 1	22	14	14	50
Treatment 2	14	15	21	50
Treatment 3	9	12	29	50
Total	45	41	64	150

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M91007052

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

A clothing quality director determines the accuracy of nfl

A clothing quality director determines the accuracy of NFL Logos on t-shirts. 9% of the shirts made that day are defective. The shirts are sold in packages of 10. Find the probability that in one randomly selected packag ...

Consider the following random sample ofnbspdata8 6 -6 0 -9

Consider the following random sample of data: 8, 6, -6, 0, -9, 4, -1, 7, 6, 84 a) What is the standard deviation of the sample data? Round your response to at least 3 decimal places. b) If the outlier is removed, what is ...

What is the annual coupon rate of a 7-year corporate bond

What is the annual coupon rate of a 7-year corporate bond given that its current price is $930, par = 1,000, semi-annual coupon, YTM=10%?

Question 1 the us census bureau needs to estimate the

Question 1. The U.S. Census Bureau needs to estimate the median income of females in the U.S. They collect incomes from 3500 females. Choose the best answer. Justify for full credit. (a) Which of the followings is the va ...

You have a bag with three fair dice one is 4-sided one is

You have a bag with three fair dice. One is 4-sided, one is 6-sided, and one is 12-sided. You reach into the bag, pick one die at random, and roll it. The outcome of the roll is 4. What is the probability that you rolled ...

The commissioner of the state police is reported as saying

The commissioner of the state police is reported as saying that about 10% of reported auto thefts involve owners whose cars haven't really been stolen. What null and alternative hypotheses would be appropriate in evaluat ...

A normal distribution has a mean equal tonbsp45 what is the

A normal distribution has a mean equal to 45. What is the standard deviation of this normal distribution if 2.5% of the proportion under the curve lies to the right of x = 52.84? (Round your answer to two decimal plac ...

The equation used to predict how long a cold will last is

The equation used to predict how long a cold will last is y=-1.8 + 0.09x1 + 3.2x2 - 1.9x3, where x1 is person's temperature on the first day, x2 is number of people seen each day, and x3 is the amount of sleep the person ...

Let be a random variable with probability

Let be a random variable with probability function f ( x )=144/205 x^ 2 , where x =1,2,3,4. (a) Find the expected value of X (b) Find the expected value of Y =2 X +3

A quality controller selects 8 items at a predefined

A quality controller selects 8 items at a predefined interval and found that 75% of the time the item was non-defective. Let "S" represent the occurence of a non defective item. Assuming that this experiment is Binomial: ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert