# Statistics Assignment (Doc)

13 Pages2175 Words47 Views

## Statistics Assignment (Doc)

BookmarkShareRelated Documents
Statistics
INTRODUCTION In the present scenario, use of statistical tools and software has increased significantly in the field of research.SPSS tools such as chi-square, t-test, regression and correlation are highly significant which in turn provides high levelof assistance in testing hypothesis. The present report is based on different case situations which will shed light on themanner in which different statistical tools aid in decision making. QUESTION 1H0: There is no significant difference in the mean values of adolescent’s behavior before and after an interventionprogram. H1: There is a significant difference in the mean values of adolescent’s behavior before and after an interventionprogram.T-TestOne-Sample StatisticsNMeanStd.DeviationStd. ErrorMeanBefore1513.336.9141.785After1511.135.9981.549One-Sample TestTest Value = 0tdfSig. (2-tailed)MeanDifference95% Confidence Interval ofthe DifferenceLowerUpperBefore7.46814.00013.3339.5017.16After7.18814.00011.1337.8114.46Interpretation: The above depicted table shows that p value is 0.00 which is below the standard level such as 0.05. Byconsidering p<0.05, it can be stated that alternative hypothesis is true and other one is rejected. On the basis of suchaspect, it can be said that intervention program has significant impact on the behavior of adolescent.
QUESTION 2Mean: 2200 gmStandard deviation: 800 gm5% of babies weighed below: 600 gmZ = 600 – 2200 / 800= -2QUESTION 3ParticularsAir AustraliaAustralian Airways faresMean cost\$188.50\$18.89Standard deviation\$198.45Sample 25 faresLevel of significance 0.01QUESTION 4H0: There is no significant difference in the mean values of different groups such as satisfactory and unsatisfactory.H1: There is a significant difference in the mean values of different groups such as satisfactory and unsatisfactory.T-TestOne-Sample StatisticsNMeanStd.DeviationStd. ErrorMeanBefore1513.336.9141.785After1511.135.9981.549satisafctory132.92311.55250.43059dissatisfcatory103.20001.61933.51208One-Sample TestTest Value = 0tdfSig. (2-tailed)MeanDifference95% Confidence Interval ofthe DifferenceLowerUpper

## End of preview

Want to access all the pages? Upload your documents or become a member.

Related Documents
|11
|1101
|23

|10
|1174
|85

|6
|1140
|461

|15
|2487
|449

|13
|2069
|57

|12
|2042
|60

### Support

#### +1 306 205-2269

Chat with our experts. we are online and ready to help.