Ten percent of the world's population is left-handed. a researcher claims that left-handed individuals are more creative than those who aren't left-handed. in order to support his claim, he takes a sample of artists and finds that of them are left-handed. find the mean of , where is the proportion of left-handed individuals in a random sample of . find the standard deviation of . compute an approximation for , which is the probability that there will be or more left-handed people in a random sample of 900 . round your answer to four decimal places.

Leslie started last week with $1200 in her checking account. during the week, she wrote the checks below. trans typ./ check no. date description of transaction payment/ debit deposit/ credit (+) balance 1,200 00 324 10/6 miller's food market 45.87 45 87 groceries 1,154 13 325 10/7 cyber center computer outlet 218.59 218 59 monitor 935 54 326 10/9 sandy's beauty salon 30.00 30 00 haircut and styling 900 59 deposit 10/10 paycheck 621.33 621 33 1,621 92 evaluate leslie's check register. a. leslie did a good job. everything is correct. b. the final balance is wrong; she did not add everything correctly. c. leslie should have written debit instead of deposit for the transaction type. d. leslie switched the debit and credit columns.