Statistic

4. An accounting rm Wishes to form an 84 percent confidence interval for the population mean tax refund for its clients who receive refunds. How large a random sample is needed to be within $10? a: $42.67. Z: [1: 5. In a package of \"The Flintstones Real Fruit Snacks\" there were 5 BamBam snack pieces. The total number of snack pieces in the bag was 68. We wish to calculate a 96% confidence interval for the population proportion of Barn-Bam snack pieces. \"Run the numbers, then crunch them just to be sure." p': Z: E: C]: 6. An Environmental Protection Agency(EPA) investigator wants to know the proportion of sh that inedible because of chemical pollution downstream of an offending factory. If the answer must be within i003 at 92% condence level, how many fish should be sampled? Z: 1'1