Given a normal distribution μ=50 σ=5?, and given you select a sample of n=100?
What is the probability that x¯ is above 50.8??
?P( x¯>50.8?)=
?(integer or decimal rounded to four decimal places as? needed.)
A study reports that 36?% of companies in Country A have three or more female board directors. Suppose you select a random sample of 100 respondents.
The probability is 90?% that the sample percentage of Country A companies having three or more female board directors will be contained within what symmetrical limits of the population ?percentage?
The probability is 90?% that the sample percentage will be contained above ? ?%
and below ? ?%.
?(Round to one decimal place as? needed.)