Reference no: EM131977959
Given a normal distribution with μ=50 and σ=5?, and given you select a sample n=100?
What is the probability that Upper x¯ is between 49 and 51.5??
?P(49<x¯<51.5?)= ?(integer or decimal rounded to four decimal places as? needed.)
A set of final examination grades in an introductory statistics course is normally? distributed, with a mean of 72 and a standard deviation of 9
The probability is 25?% that a student taking the test scores higher than what? grade?
The probability is 25?% that a student taking the test scores higher than? ?(Round to the nearest integer 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.
What is the probability that the sample will have between 27?% and 40?% of companies in Country A that have three or more female board? directors?
The probability is?
?(Round to four decimal places as? needed.)