Consider testing Upper H 0 : mu equals 20H0: μ=20 against Upper H Subscript a Baseline : mu less than 20Ha: μ<20 where muμ is the mean number of latex gloves used per week by all hospitalemployees, based on the summary statistics nequals=444, x overbarxequals=19.3 and sequals=11.1 Complete parts a and b.

Test: < 20 with normal distⁿ

Hypothesis test:

H0:   20                         (Null Hypothesis, H₀ : = 20 is also correct)

H1: < 20                             (Alternative Hypothesis, also called H₁)

This is lower tailed test.

Since sample is large, sample standard deviation can be taken as an  approximation of population standard deviation.

x = 19.3

= 11.1

n = 444

significance level, = 0.05 (If no value is given, we take level of 0.05)

Test statistic

                       = - 1.33

The attached files contains additional information

5.6%

step-by-step explanation: