Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Lesson #14 Assignment1. For the following set of data, _____________X____Y__1 02 24 65 83 4__________a. Sketch a graph showing the location of the five X, Y points.b. Just looking at your graph, estimate the value of the Pearson correlation.c. Compute the Pearson correlation for this data set.2. It is well known that similarity in attitudes, beliefs, and interests plays an important rolein interpersonal attraction (see Byrne, 1971, for example). Thus, correlations for attitudesbetween married couples should be strong. Suppose a researcher developed a questionnairethat measures how liberal or conservative one's attitudes are. Low scores indicate that theperson has liberal attitudes, whereas high scores indicate conservatism. The followinghypothetical data are scores for married couples.________________________________Couple____Wife___Husband____A 11 14B 6 7C 18 15D 4 7E 1 3F 10 9G 5 9H 3 3______________________________Compute the Pearson correlation for these data, and determine whether or not there is a significant correlation between attitudes for husbands and wives. Set alpha at .05, two tails.3. Assuming a two-tailed test with α = .05, how large a correlation is needed to be statisticallysignificant for each of the following samples?a. A sample of n = 15 individualsb. A sample of n = 30 individualsc. A sample of n = 92 individuals4. A psychologist would like to determine whether there is any consistent relationshipbetween intelligence and creativity. A random sample of n = 18 people is obtained and thepsychologist administers a standardized IQ test and creativity test to each individual. Usingthese data, the psychologist obtains a Pearson correlation of r = +0.20 between IQ andcreativity. a. Do the sample data provide sufficient evidence to conclude that a real (nonzero) correlation exists in the population? Test at the .05 level of significance.b. If the same correlation, r = 0.20, was obtained for a sample of n = 102 people, whatdecision would be made about the population correlation?5. For the following set of data,_____________X____Y__1 24 73 52 1 5 143 7__________a. Compute the Pearson correlation.b. Find the linear regression equation for predicting Y from X.c. Use the regression equation to compute the predicted Y for each value of X.
If measurements are made instead on 4 separate days and the mean result is compared with the criterion 3.5, what is the probability that Judy is diagnosed as hypokalemic?
There were 25 subjects included in each of the combinations of gender and smoking status. One of the variables measured was the heart rate after six minutes of exercise. A two-way ANOVA is performed with the resulting ANOVA table given below
Evaluate the value of population proportion. Develop a 99% confidence interval for population proportion.
An experiment was performed to investigate lifetime of a component exposed to high heat. Three different oven types were used at either 550°F or 600°F.
The time until a component is taken out of service is uniformly distributed on 0 to 8 hours. Two such independent components are put in series, and the whole system goes down when one of the components goes down.
Determine: SS(xy)Linear correlation coefficient, r. Bar graph below compares mean time in seconds for 7-yr old girls to complete certain task.
If you were told that on a particular day it was raining in Vancouver, what would be the probability that this day would be a winter day?
The probability I'll jog today is 0.90 and the probability you'll jog tonight is 0.30. Find the probability:
As part of study of the development of the thymus gland, researchers weighed the glands of five chick embryos after 14 days of incubation. Calculate the standard error of the mean.
Show that Pearson's Chi-square statistic for testing Ho : 1 = 2 when there are k-categories reduces to Z^2 when k = 2, where Z = 2 sqrt(n)(p1-1/2) is the standard Z-test for testing Ho : 1 = 1=2
Determine the probability that the number of people who show up will exceed the capacity of the plane?
In this continuous production process, the amount of toothpaste put in a tube is normally distributed with a mean of 8.17 ounces and a standard deviation of 0.12 ounces. If the actual capacity of the tubes used is 8.49 ounces, what proportion of t..
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd