Homework Answers
10. The correct answer is Option C. In this scenario, we should conduct a one sample t-test.
11. An independent samples t-test should be used.
12. Alternative hypothesis: There is a significant difference in the amount of males and females studying psychology in NEIU.
13. Null hypothesis: There is no significant difference in the amount of males and females studying psychology in NEIU.
Please post the other questions separately. As per our answering guidelines we are supposed to answer just one question or four sub parts of the same question.
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a. ULP b. Paired t-test d. 1 sample 20 10. You are asked to compare a...
Imagine that a researcher is conducting a paired-samples t test. She finds that the sample mean...
Imagine that a researcher is conducting a paired-samples t test. She finds that the sample mean difference is 5, the standard deviation of the difference scores is 15, and the sample size is 85. The researcher is also using a typical null hypothesis that proposes no differences between the relevant population means. Under these circumstances, what is the value of the paired-samples t statistic? Please retain a minimum of three decimal places for all steps (if relevant) and provide a...
Now suppose a larger sample (30 pairs vs 10 pairs) was collected and a paired t test was used to analyze the data. The...
Now suppose a larger sample (30 pairs vs 10 pairs) was collected and a paired t test was used to analyze the data. The output is shown below. Paired Samples Statistics Mean N Std. Deviation Std. Error Mean Pair 1 Female salaries 6773.33 30 782.099 142.791 Male salaries 7213.33 30 875.227 159.794 Paired Samples Correlations N Correlation Sig. Pair 1 Female salaries & Male salaries 30 .881 .000 Paired Samples Test Paired Differences t df Sig. (2-tailed) Mean Std. Deviation...
(1 point) Suppose you want to test the claim the the paired sample data given below...
(1 point) Suppose you want to test the claim the the paired sample data given below come from a population for which the mean difference is μ d =0 μ d = 0 . x y 60 69 76 64 79 77 57 88 63 67 51 85 73 60 x 60 76 79 57 63 51 73 y 69 64 77 88 67 85 60 Use a 0.01 0.01 significance level to find the following: (a) The mean value...
Although we have not emphasized it, the paired t-test can be used to test hypotheses in...
Although we have not emphasized it, the paired t-test can be used to test hypotheses in which the null value is something other than 0. For example, suppose that the proponents of a diet plan claim that the mean amount of weight lost in the first three weeks of following the plan is 11 pounds. A consumer advocacy group is skeptical and measures the beginning and ending weights for a random sample of 20 people who follow the plan for...
1. ANOVA is a statistical method for verifying the equality between some sample means b. a....
1. ANOVA is a statistical method for verifying the equality between some sample means b. a. some sample standard deviations c. some population standard deviations d some population means Salary information regarding male and female employees of a large company is shown below Sample Size Male (Pop. 1) Female (Pop. 2) 49 47 Sample Mean Salary (in $1,000) , Population Variance 2. The point estimate of the difference μ-μ, between the two population means is Y 7-44-3.0 3. The margin...
Assume that you want to test the claim that the paired sample data come from a...
Assume that you want to test the claim that the paired sample data come from a population for which the mean difference is μd = 0. Compute the value of the t test statistic. Round intermediate calculations to four decimal places as needed and final answers to three decimal places as needed. A farmer has decided to use a new additive to grow his crops. He divided his farm into 10 plots and kept records of the corn yield (in...
The test used were a paired t-test using two samples Contnuous AribueGraphs and Foreca tabulason 0oodess...
The
test used were a paired t-test using two samples
Contnuous AribueGraphs and Foreca tabulason 0oodess of e and Chi-Squre Cervelation RgssionnayChi Square Crs Test Sample Samples Control Charti Make Similar Paired t: Recall1, Recall3 Descriptive Statistics sample N Mean StDev SE Mean Recal 72 75278 323260.380 Recal3 72 5.1250 2.56703025 Estimation for Paired Difference Mean StDev SE Mean 95% for 24028 1.3179 0.1553 12.0931, 2.7125) ls mean of (Recoll Recol) Test Null hypothesis Alternative hypothesis H,: μ T Value...
8. A random sample of 25 college males was obtained and each was asked to report...
8. A random sample of 25 college males was obtained and each was
asked to report their actual height and what they wished as their
ideal height. A 95% confidence interval for μd= average difference
between their ideal and actual heights was 0.8" to 2.2". Based on
this interval, which one of the null hypotheses below (versus a
two-sided alternative)can be rejected?
A. H0: μd= 0.5
B. H0: μd= 1.0
C. H0: μd= 1.5
D. H0: μd= 2.0
9. The...
c. Run a two-sample paired t-test for means to test your hypothesis, using a confidence level...
c. Run a two-sample paired t-test for means to test your hypothesis, using a confidence level of 95%. To show whether it is a one-tail test or a two-tail test, highlight the significant values in the Excel output, including your p-value, critical t, and t stat. and write a sentence or two to interpret the results. should the null hypothesis be rejected? In EXCEL PLEASE TABLE C9-2: Wife and Husband Feedback Scores on 1-7 Scale + Same Day or Not...
) You have collected 14,925 observations from the Current Population Survey. There are 6,285 females in the sample, and 8,640 males. The females report a mean of average hourly earnings of $16.50 with...
) You have collected 14,925 observations from the Current Population Survey. There are 6,285 females in the sample, and 8,640 males. The females report a mean of average hourly earnings of $16.50 with a standard deviation of $9.06. The males have an average of $20.09 and a standard deviation of $10.85. The overall mean average hourly earnings is $18.58. a. Using the t-statistic for testing differences between two means (section 3.4 of your textbook), decide whether or not there is...
Although we have not emphasized it, the paired t-test can be used to test hypotheses in which the null value is something other than 0. For example, suppose that the proponents of a diet plan claim that the mean amount of weight lost in the first three weeks of following the plan is 11 pounds. A consumer advocacy group is skeptical and measures the beginning and ending weights for a random sample of 20 people who follow the plan for...
1. ANOVA is a statistical method for verifying the equality between some sample means b. a. some sample standard deviations c. some population standard deviations d some population means Salary information regarding male and female employees of a large company is shown below Sample Size Male (Pop. 1) Female (Pop. 2) 49 47 Sample Mean Salary (in $1,000) , Population Variance 2. The point estimate of the difference μ-μ, between the two population means is Y 7-44-3.0 3. The margin...
The
test used were a paired t-test using two samples
Contnuous AribueGraphs and Foreca tabulason 0oodess of e and Chi-Squre Cervelation RgssionnayChi Square Crs Test Sample Samples Control Charti Make Similar Paired t: Recall1, Recall3 Descriptive Statistics sample N Mean StDev SE Mean Recal 72 75278 323260.380 Recal3 72 5.1250 2.56703025 Estimation for Paired Difference Mean StDev SE Mean 95% for 24028 1.3179 0.1553 12.0931, 2.7125) ls mean of (Recoll Recol) Test Null hypothesis Alternative hypothesis H,: μ T Value...
8. A random sample of 25 college males was obtained and each was
asked to report their actual height and what they wished as their
ideal height. A 95% confidence interval for μd= average difference
between their ideal and actual heights was 0.8" to 2.2". Based on
this interval, which one of the null hypotheses below (versus a
two-sided alternative)can be rejected?
A. H0: μd= 0.5
B. H0: μd= 1.0
C. H0: μd= 1.5
D. H0: μd= 2.0
9. The...
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