(a) For a confidence level of 92%, find the critical value za/2. Round your answer to 2 places after the decimal point. Za/2 (b) For a confidence level of 99% and a sample size of 5, find the critical value ta/2. Round your answer to 3 places after the decimal point. tala =

A new fertilizer was applied to the soil of 290 bean plants., 30% showed increased growth.  Find the margin of error and 95% confidence interval for the precentage of all bean plants which show increased growth after application of the fertilizer.  Round to 2 decimals 1.  Margin of Error (as a percentage) 2.  Confidence Interval ____________% to _____________%.

For a confidence level of 90%, find the critical value. Use 3 decimal places.

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Researchers studied the mean egg length (in millimeters) for a bird population. After taking a random sample of eggs, they obtained a 95% confidence interval of (45,60). What is the value of the margin of error? Choose the correct answer below. A. 15 mm B. 52.5 mm O c. 7.5 mm O D. 1.96

A survey was conducted that asked 1016 people how many books they had read in the past year. Results indicated that x = 11.8 books and s = 16.6 books. Construct a 99% confidence interval for the mean number of books people read. Interpret the interval. E Click the icon to view the table of critical t-values. Construct a 99% 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 vour choice. (Use ascending order. Round to two decimal places as needed.) O A. If repeated samples are taken, 99% of them will have a sample mean between and. Table of Critical t-Values O B. There is a 99% probability that the true mean number of books read is between and. OC. There is 99% confidence that the population mean number of books read is between and . t-Distribution Area in Right Tail Degrees of Freedom 0.25 0.20 0.15 0.10 0025 00 0.01 0.005 0.0025 0.001 0.0005 1.376 1.963 1.061 1.386 0.978 1.250…