No. Date Based on a study of al21 between the aqes 1 and 4 researchers at the Medical College of wis consin included that there was an association between iron deficiency and the length of time that a child is bottle fed. Descrilot the sample and the population of interest for thi's study. Sample Population B No. Date

For which of the following pairs of variables would it be appropriate to use a chi-square to test if a significant association exists between the two variables (assuming we have met the expected counts requirement).   Group of answer choices a) percentage body fat time spent each day on vigorous activity (minutes) b) Maximum oxygen uptake (mL/min/kg) Runners: Normally Active, Recreational Runners, Elite Runners c) Exercise: No regular exercise, sporadic exercise, regular exercise  Student living arrangement: Dormitory, On campus apartment, off campus apartment, at home e) Staff : permanent , casual Work satisfaction: Measured using a group of survey questions, whose answers are then scored and combined to give a final score for satisfaction that falls between 0 and 100, with 100 indicating very high satisfaction

The recommended daily dietary allowance for zinc among males older than age 50 years is 15 mg/day. An article reports the following summary data on intake for a sample of males age 65−74 years: n = 116, x = 12.5, and s = 6.35. Does this data indicate that average daily zinc intake in the population of all males age 65−74 falls below the recommended allowance? (Use ? = 0.05.)State the appropriate null and alternative hypotheses. H0: ? = 15Ha: ? ≠ 15H0: ? = 15Ha: ? > 15    H0: ? = 15Ha: ? ≤ 15H0: ? = 15Ha: ? < 15 Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to four decimal places.) z  =    P-value  =    State the conclusion in the problem context. Do not reject the null hypothesis. There is not sufficient evidence that average daily zinc intake falls below 15 mg/day.Reject the null hypothesis. There is not sufficient evidence that average daily zinc intake falls below 15 mg/day.    Do not reject…

Conduct a Chi-square test between two appropriate variables of your choice to investigate an association. Obtain column %s, count and expected count in the crosstabs table. Describe what the table tells you about the association in 2-3 sentences, reporting some %s and comparing select observed/expected frequencies in various cells to describe the association. Write out the null and research hypothesis Report the χ² critical value for an alpha level of 0.05. Report χ² obtained/test stat and sig/p value from the output. What is your decision about the hypothesized association? Write out a conclusion about the association. Attach your output including the cross-tabulation table and the chi-square test.