Latex allergy in health care workers. Refer to the Current Allergy&Clinical Immunology (March 2004) study of n =46 hospital employees who were diagnosed with a latex allergy from exposure to the powder on latex gloves, presented. The number of latex gloves used per week by the sampled workers is summarized as follows: and s=11.9. Let μ represent the mean number of latex gloves used per week by all hospital employees. Consider testing H0: μ = 20 against Ha: μ<20.
a. Give the rejection region for the test at a significance level of α = .01.
b. Calculate the value of the test statistic. c. Use the results from parts a and b to draw the appropriate conclusion
Latex allergy in health care workers. Health care workers who use latex gloves with glove powder on a daily basis are particularly susceptible to developing a latex allergy. Symptoms of a latex allergy include conjunctivitis, hand eczema, nasal congestion, a skin rash, and shortness of breath. Each in a sample of 46 hospital employees who were diagnosed with latex allergy based on a skin-prick test reported on their exposure to latex gloves ( Current Allergy&Clinical Immunology, March 2004). Summary statistics for the number of latex gloves used per week are and s = 11.9.
a. Give a point estimate for the average number of latex gloves used per week by all health care workers with a latex allergy.
b. Form a 95% confidence interval for the average number of latex gloves used per week by all health care workers with a latex allergy.
c. Give a practical interpretation of the interval you found in part b.
d. Give the conditions required for the interval in part b to be valid.
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