1) The luncheon expense vouchers of the executives of a large advertising firm have a population mean μ = $10 per person and σ = $4 per person.
a) Below what dollar value will 99% of the sample means fall?_________
b) What proportion of the sample means will be between $8 and $12? ________
c) What proportion of the sample means will be below $8 or above $12? _________
d) What proportion of the sample means will be below $8? _________
e) What proportion of the sample means will be above _________
2) The luncheon expense vouchers of the executives of a large advertising firm have a population mean μ = $75per person and σ = $10 per person.
a below what dollar value will 99% of the sample means fall?________
b what proportion of the sample means will be between $80 and $70? ________
c what proportion of the sample means will be below $80 or above $75? ________
d what proportion of the sample means will be below $80? _________