Homework Answers
From the power analysis table, normalized difference in means = d = 0.8
Power = 0.80
Alpha = 0.05
For d = 0.8, we will find when power = 90%. The corresponding row or the sample size value = 27
Hence, number of samples per group = 27
Add Answer to:
Using the power analysis table, please determine the number of samples per group (group 1 and...
HW10: Power Analysis and Sample size INSTRUCTIONS: Please find the sample size that would allow the...
HW10: Power Analysis and Sample size INSTRUCTIONS: Please find the sample size that would allow the graduate student below to draw a conclusion with 95% confidence and a power level of 0.85. Scenario: A graduate student has administered a pro-inflammatory substance, lipopolysaccharide (LPS), to humans in the form of a pill (2 doses – 0mg or placebo and 15mg; n=35 patients per group). She then determines the blood concentration (in pg/ml) of a particular protein that is known to be...
please answer question number 6 thank you "You computed statistical power for your experiment to be...
please answer question number 6 thank you
"You computed statistical power for your experiment to be 0.7, what is the value of Beta (8)?:- Beta = 70% Beta = 0.49 Beta = 0.7 Beta = 0.3 QUESTION 6 Using an independent samples t-test a researcher obtains a t-statistic of 2.316, he rejects the null at the 2 tailed alpha level of 0.05. Estimate N1-N2 (Total N Total number of subjects): less than 8 8 or more 10 or more less...
ONLY QUESTIONS D, E, F and G Question 3: Independent Samples t-Test Group Statistics bype of...
ONLY QUESTIONS D, E, F and G
Question 3: Independent Samples t-Test Group Statistics bype of school Mean reading score public private 168 32 51.8452 54.2500 SM Deviation 10.42279 9 19677 Sid Error Mean 0414 162578 Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means 95% Confidence Mean Sid. Error Interval of the Sig. 2. Differenc Differenc Difference o tailed) Lower Upper 564 453 1.217 198 225 -2.40476 1.97519 -6.29986 1.49034 reading Equal variances assumed...
Do males and females have significant different GPAs? Following is the output of analysis for 26...
Do males and females have significant different GPAs? Following is
the output of analysis for 26 males and 25 females.
1. Which of the following statements are true regarding
Levene’s F-test using a .05 level of significance?
a. Means are significantly different
b. Means are not significantly different
c. Variances are significantly different
d.Variances are not significantly different
2. From the chart above, what is the correct t-value, df, and Sig.
used for the t-test:
a. t(49)=0.326, p>0.05
b.t(49)=0.330, p>0.05...
Problem Set 1: The independent-samples t test Research Scenario: A learning psychologist is interested in comparing the success of two different mnemonics (memorization methods) on performance in a me...
Problem Set 1: The independent-samples t test Research Scenario: A learning psychologist is interested in comparing the success of two different mnemonics (memorization methods) on performance in a memory task. He assigns students to two groups, one which learns and uses a language-based rhyming memory technique, and one which learns and uses a visual “method of loci” spatial memory technique. He then administers a memory task to each group of students. The students are scored based on the percentage of...
Please answer showing all the work by hand ie not using excel , minitab,... (For (a) please show ...
Please answer showing all the work by hand ie not using excel ,
minitab,...
(For (a) please show all the work on how you got the values for
the table)
2.) Suppose customer satisfaction tests are given to random samples of customers from five different restaurant chains. The samples are chosen so that each chain provides data from three major cities (Montreal, Ottawa, Toronto). Perform an analysis using the data below, treating the city as blocks. Restaurant 52 79 (a)...
Age group // Number in age group // Probability of claim per life // Mean of...
Age group // Number in age group // Probability of claim per life // Mean of the exponential distribution of claim amounts 18-35 // 400 // 0.03 // 5 36-50 // 300 // 0.07 // 3 51-65 // 200 // 0.10 // 2 A group life insurance contract covering independent lives is rated in three age groupings as given in the table above. The insurer prices the contract so that the probability that claims will exceed the premium is 0.05....
1. Given the following analysis of variance table, compute mean squares for between groups and within...
1. Given the following analysis of variance table, compute mean squares for between groups and within groups. Compute the Fratio and test the hypothesis that the group means are equal. Do thefollowing test at 0.05 significance level (a = 0.05) Source of Variation Between groups Within groups Total Sum of Squares 1,000 750 1,750 Degrees of Freedom 4 115 19
hi can you please help me find the claim two samples are independent and that they...
hi
can you please help me find the claim
two samples are independent and that they Test the indicated claim about the means of two populations. Assume that the two have been randomly selected. 3) Two types of flares are tested for their burning times in minutes) and sample results given below. times (in minutes) and sample results are 3) Brand X Brand Y n=35 n 40 * = 19.4 x = 15.1 8-14 $ 0.8 Refer to the sample...
Use the following information to answer questions 25-31 A traveler wants to know if the prices of hotels are different. She samples 10 cities and finds the prices below. Use a paired-sample t-t...
Use the following information to answer questions 25-31 A traveler wants to know if the prices of hotels are different. She samples 10 cities and finds the prices below. Use a paired-sample t-test to determine whether the difference between hotel prices is significant at the a 0.01 confidence level Cities Atlanta Boston Chicago Dallas Denver Indianapolis Los Angeles New York City 517 Philadelphia Washington, DC 251 Hyatt Regency prices in dollars Hilton prices in dollars 90 273 204 303 189...
please answer question number 6 thank you
"You computed statistical power for your experiment to be 0.7, what is the value of Beta (8)?:- Beta = 70% Beta = 0.49 Beta = 0.7 Beta = 0.3 QUESTION 6 Using an independent samples t-test a researcher obtains a t-statistic of 2.316, he rejects the null at the 2 tailed alpha level of 0.05. Estimate N1-N2 (Total N Total number of subjects): less than 8 8 or more 10 or more less...
ONLY QUESTIONS D, E, F and G
Question 3: Independent Samples t-Test Group Statistics bype of school Mean reading score public private 168 32 51.8452 54.2500 SM Deviation 10.42279 9 19677 Sid Error Mean 0414 162578 Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means 95% Confidence Mean Sid. Error Interval of the Sig. 2. Differenc Differenc Difference o tailed) Lower Upper 564 453 1.217 198 225 -2.40476 1.97519 -6.29986 1.49034 reading Equal variances assumed...
Do males and females have significant different GPAs? Following is
the output of analysis for 26 males and 25 females.
1. Which of the following statements are true regarding
Levene’s F-test using a .05 level of significance?
a. Means are significantly different
b. Means are not significantly different
c. Variances are significantly different
d.Variances are not significantly different
2. From the chart above, what is the correct t-value, df, and Sig.
used for the t-test:
a. t(49)=0.326, p>0.05
b.t(49)=0.330, p>0.05...
Please answer showing all the work by hand ie not using excel ,
minitab,...
(For (a) please show all the work on how you got the values for
the table)
2.) Suppose customer satisfaction tests are given to random samples of customers from five different restaurant chains. The samples are chosen so that each chain provides data from three major cities (Montreal, Ottawa, Toronto). Perform an analysis using the data below, treating the city as blocks. Restaurant 52 79 (a)...
1. Given the following analysis of variance table, compute mean squares for between groups and within groups. Compute the Fratio and test the hypothesis that the group means are equal. Do thefollowing test at 0.05 significance level (a = 0.05) Source of Variation Between groups Within groups Total Sum of Squares 1,000 750 1,750 Degrees of Freedom 4 115 19
hi
can you please help me find the claim
two samples are independent and that they Test the indicated claim about the means of two populations. Assume that the two have been randomly selected. 3) Two types of flares are tested for their burning times in minutes) and sample results given below. times (in minutes) and sample results are 3) Brand X Brand Y n=35 n 40 * = 19.4 x = 15.1 8-14 $ 0.8 Refer to the sample...
Use the following information to answer questions 25-31 A traveler wants to know if the prices of hotels are different. She samples 10 cities and finds the prices below. Use a paired-sample t-test to determine whether the difference between hotel prices is significant at the a 0.01 confidence level Cities Atlanta Boston Chicago Dallas Denver Indianapolis Los Angeles New York City 517 Philadelphia Washington, DC 251 Hyatt Regency prices in dollars Hilton prices in dollars 90 273 204 303 189...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago