STEP BY STEP SOLUTIONS PLEASE
4. The company executives at Company XYZ, believe that only 40%
of their 10,000 employees are extremely satisfied with their jobs
and have been working to improve this value. Therefore, they just
surveyed 200 employees which indicated that 90 employees were
extremely happy working for Company XYZ. What is the
alternative hypothesis (assuming a 2 sided test)
of extremely happy employees?
a. HA: p = 0.45
b. HA: p ≠0.40
c. HA: p ≠0.45
d. HA: p ≠0.90
5. The company executives at Company XYZ, believe that only 40%
of their 10,000 employees are extremely satisfied with their jobs
and have been working to improve this value. Therefore, they just
surveyed 200 employees which indicated that 90 employees were
extremely happy working for Company XYZ. What is the standard
deviation?
a. 0.0012
b. 0.0346
c. 0.0352
d. 0.0500
6. The company executives at Company XYZ, believe that only 40%
of their 10,000 employees are extremely satisfied with their jobs
and have been working to improve this value. Therefore, they just
surveyed 200 employees which indicated that 90 employees were
extremely happy working for Company XYZ. Based on the above z
statistic (still using a two-sided alternative) what is the
p-value?
a. 0.0749
b. 0.1498
c. 0.8502
d. 0.9251