Chap 7 Wkst #2 Page 1 of 2 Chapter 7 Worksheet #2
Name
Label values with statistical symbols.
1. Health-care workers who use latex gloves with glove powder on a daily basis are particularly
susceptible to developing a latex allergy. In a sample of 46 hospital employees who had a latex
allergy, the mean number of gloves used per week were 19.3 with a standard deviation of
11.9.
a. Find a point estimate for the population mean number of latex gloves used per week by
all health-care workers with a latex allergy.
x=19.3
b. Find a 95% confidence interval for the mean number of latex gloves used per
week by all health-care workers with a latex allergy. Round to 2 decimal places.
c. Interpret the interval. Round to 2 decimal places.