63% of men consider themselves professional baseball fans. You randomly select 10 men and ask each if he considers himself a professional baseball fan. Find the probability that the number who consider themselves baseball fans is (a) exactly five (b) at least six (c) less than four? Round to three decimal places as needed […]
The mean incubation time for a type of fertilized egg kept at 100.5 F is 23 days. Suppose that the incubation times are approximately normally distributed with a standard deviation of 1 day. a) The probability that a randomly selected fertilized egg hatches in less than 21 days is? round to four decimal places as […]
33% of college students say they use credit cards because of the rewards program. You randomly select 10 college students and ask each to name the reason he or she uses credit cards. Find the probability that the number of college students who say they use credit cards because of the rewards program is (a) […]
The table below shows the results of a survey that asked 2857 people whether they are involved in any type of charity work. A person is selected at random from the sample Frequently Occasionally Not at all Total Male 226 452 797 1475 Female 206 430 746 1382 Total 432 882 1543 2857 a) find the probability […]
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