Answer:
a. 2.13. b. (30.53, 34.79). c. The mean prices for two in mid-range restaurants in Hong Kong are relatively less than those in Tokyo restaurants.
Explanation:
The size of the sample is 42 and the mean of the sample is ∑
= 32.66 and the standard deviation of the sample (σ) is √[∑(
-μ)^2 - 1] = √46.6092 = 6.8271
a. α = 1 - (95/100) = 0.05; α/2 = 0.025; the degree of freedom = n-1 = 42-1 = 41; tα/2 = t0.025 = 2.02. Thus, the error margin = (tα/2)*(σ/√n) = 2.02*(6.83/√42) = 2.1279
b. Lower level limit = 32.66 - 2.1279 = 30.5321; Upper level limit = 32.66+2.1279 = 34.7879. The interval estimate = (mean± margin of error) = (30.53, 34.79).
c. The mean prices for two in mid-range restaurants in Hong Kong are relatively less than those in Tokyo restaurants.
Answer:
It is true
Explanation:
Chartered Accountants most especially external auditors are trained to provide assurance services that will give credit and reliability to the financial information being presented to the users by the directors.
Their services include statutory audit and other related assurance services.
The report produced by a Chartered Accountant (e.g External Auditor) gives reasonable assurance to the shareholders of the company or any other external users.
Answer:
Ruby should go to college.
Explanation:
Ruby is currently 50 years old and earning $50,000 per year.
She would like to retire at 67.
She is thinking of going back to college, to complete a graduate degree.
After completing a graduate degree from the college she would earn $55,000.
The total cost of a graduate degree is $75,000.
Ruby still has 17 years to work and earn.
Her income will increase by $5,000 after college
The increase in income earned after college until retirement
= $5,000 
17
= $85,000
Since the increase in income is greater than the cost of going to college, Ruby should go to college.
