question1 : the probability...? question 2: a survey was conducted..? question 3: a researcher..?

The probability that a randomly selected 2-year-old male salamander will live to be 3 years old is 0.95081. (a) What is the probability that two randomly selected 2-year-old male salamanders will live to be 3 years old? (b) What is the probability that five randomly selected 2-year-old male salamanders will live to be 3 years old? (c) What is the probability that at least one of five randomly selected 2-year-old male salamanders will not live to be 3 years old? Would it be unusual if at least one of five randomly selected 2-year-old male salamanders did not live to be 3 years old? (a) The probability that two randomly selected 2-year-old male salamanders will live to be 3 years old is (Round to five decimal places as needed;) (b) The probability that five randomly selected 2-year-old male salamanders will live to be 3 years old is (Round to five decimal places as needed.) (c) The probability that at least one of five randomly selected 2-year-old male salamanders will not live to be 3 years old is (Round to five decimal places as needed.) Would it be unusual if at least one of five randomly selected 2-year-old male salamanders did not live to be 3 years old? because the probability of this happening is 0.05. A survey was conducted that asked 965 people how many books they had read in the past year. Results indicated that x = 14.9 books and s = 16.4 books. Construct a 98% confidence interval for the mean number of books people read. Interpret the interval. Construct a 98% confidence interval for the mean number of books people read and interpret the result. Select the correct choice below and fill in the answer boxes to complete your choice. (Use ascending order. Round to two decimal places as needed.) O A. There is a 98% probability that the true mean number of books read is between and O B. If repeated samples are taken, 98% of them will have a sample mean between and O C. There is 98% confidence that the population mean number of books read is between and A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be v 3 percentage points with 99% confidence if (a) he uses a previous estimate of 36%? (b) he does not use any prior estimates? Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) n= (Round up to the nearest integer.) (b) n=(Round up to the nearest integer.)