Using SPSS to Analyze Health DataI will be providing the data for this assigmentUsing the “disp” (disposition of patient) variable, answer the following questions:a.What percent of all cases had a disposition of “within this hospital”?b.What percent of all cases had a disposition of “to another hospital”?HINT: You will probably want to recode the “disp” variable. Leave the codes 07 through 13 thesame. Check to see if there are values not specified in the Patient Data Discharge File Documentation.Recode the variable “charges” so that charges of “0” and “1” are made system missing; all other charges should remain the same. Name this variable “NewChg.” Run frequencies on both the original and new charges variables. Paste the “Statistics” table (do NOT paste the frequency tables) showing the number of valid and missing cases for the old and new variables into your homework. (No sentence required.)Is there a difference in charges (use the “NewChg” variable) between scheduled and unscheduled admissions (adm_type)?Using all cases, is there a relationship between sex and ethnicity? “Ethncty” should be recoded into 2 categories – Hispanic and Non-Hispanic; “unknown” should be recoded to missing.)Recode length of stay per the instructions in the Patient Data Discharge File Documentation into a new variable, NewLOS. (No sentence required.)Using the new variables NewChg and NewLOS, create a variable for charge per day, ChargeDay, using this equation: NewChg / NewLOS. (No sentence required.)Question 7(18 points)Using the new variable for charge per day (ChargeDay), is there a difference in charge per day among patients in Alameda, Sacramento, and Santa Clara Counties?Question 8(13.5 points)Using all cases, is there a relationship between age (in years), charges, and length of stay? Use age_years, NewLOS, and NewChg.Question 9(7.5 points)Recode “agecat5” into 3 groups: age 17 and below, age 18-34, and age 35 and above. Using all cases, show the frequency tables for the old and new variables. What percent of individuals are 35 years and older?
Project For Module 4
DATA Set: Indicate one: Apartments
Directions: Fill in the answer to the questions posed below. Attach the specified printouts where indicated and upload the project in Canvas on or before December 1st atmidnight. Please give specific interpretations as generic answers will not receive full credit.
1. Use Statistix to compare the mean sizes/mileages for levels 1 and 2 of your qualitative variable. In Statistix, you will need to omit all level 3 observations in your data set to create this printout. Conduct the printout for a two-tailed test in Statistix. Attach the printout here and answer the following questions.
Two-Sample T Tests for size by location location N Mean SD SE 1 25 1205.9 405.45 81.090 2 25 1842.0 641.79 128.36 Difference -636.12 536.79 151.83 T-Tests for Mean Difference Null Hypothesis: difference = 0 Alternative Hyp: difference ≠ 0 Lower Upper Method Variances DF T P 95% C.I. 95% C.I. Pooled Equal 48 -4.19 0.0001 -941.39 -330.85 Satterthwaite Unequal 40.5 -4.19 0.0001 -942.85 -329.39 Homogeneity of Variances DF F P Folded F Test 24,24 2.51 0.0143 Cases Included 50 Missing Cases 0 State the appropriate hypotheses that you wish to test to conduct a two-tailed test to compare the population means. (2 points)
Ho:
Ha:
Suppose you were asked to really conduct a one-tailed test. Use the two-tailed printout above to find the test statistic and the p-value for the one-tailed test comparing the two population means. (2 points)
Test Statistic: _____________ P-Value: _____________
Use the confidence interval on the printout to make an inference about which of the two populations means is larger. Make sure to state your measure of reliability. (2 points)
2. Use Statistix to compare the mean prices for levels 1 and 2 of your qualitative variable. In Statistix, you will need to omit all level 3 observations in your data set to create this printout. Conduct the printout for a two-tailed test in Statistix. Attach the printout here and answer the following questions.
Two-Sample T Tests for rent by location location N Mean SD SE 1 25 1518.8 273.36 54.672 2 25 1926.5 472.59 94.518 Difference -407.68 386.05 109.19 T-Tests for Mean Difference Null Hypothesis: difference = 0 Alternative Hyp: difference ≠ 0 Lower Upper Method Variances DF T P 95% C.I. 95% C.I. Pooled Equal 48 -3.73 0.0005 -627.22 -188.14 Satterthwaite Unequal 38.4 -3.73 0.0006 -628.64 -186.72 Homogeneity of Variances DF F P Folded F Test 24,24 2.99 0.0048 Cases Included 50 Missing Cases 0 State the appropriate hypotheses that you wish to test to conduct a two-tailed test to compare the population variances. (2 points)
Ho:
Ha:
Identify the test statistic and p-value that you would use to conduct this test (2 points)
Test Statistic: _____________ P-Value: _____________
State the conclusion you would make for this test when testing at alpha = .10. (2 points)
3. It was desired to compare the proportion of males and females that had a tattoo. I entered the data into Statistix and created the following printout.
Hypothesis Test – Two Proportions Sample Size Successes Proportion Males 200 42 0.21000 Females 200 60 0.30000 Difference -0.09000 Null Hypothesis: p1 = p2 Alternative Hyp: p1 ≠ p2 SE (difference) 0.04359 Z (uncorrected) -2.06 P 0.0389 95% Confidence Interval of Difference -0.17543 < p1-p2 < -0.00457Use the confidence interval to make a statement about the relationship between these two proportions (in the words of the problem)? Make sure to include your reliability level in your answer. (2 points)
Suppose it is desired to reduce the interval width in this problem. What two choices can you make to accomplish this goal? (2 points)
This is considered a large sample problem. Why? (2 points)
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