Confidence interval for the population mean: Use of the t... Recorded here are the germination times (in days) for 16 randomly chosen seeds of a new type of bean. 20, 13, 10, 20, 18, 13, 22, 14, 11, 14, 16, 11, 22, 10, 16, 11 Send data to calculator Assuming that germination times are normally distributed, find a 99% confidence interval for the mean germination time for all beans of this type. Give the lower limit and upper limit of the 99% confidence interval. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.) Lower limit: Upper limit: S Español M

Solve for confidence interval lower and upper limits

Construct a 90​% confidence interval to estimate the population mean using the data below. What assumptions need to be made about this​ population?   x=38 s=9.9 n=24   Click here to view page 1 of the critical t-score table.   Click here to view page 2 of the critical t-score table.         Question content area bottom Part 1 The 90​%confidence interval for the population mean is from a lower limit of here to an upper limit of   ​(Round to two decimal places as​ needed.) Part 2 What assumptions need to be made about this​ population?     A. The population distribution is skewed to one side.   B. The population size is larger than 30.   C. The population follows the​ Student's t-distribution.   D. The population follows the normal probability distribution.

3) Estimating the Mean: Unknown Variance a) A student is working on his science fair project concerning the average height of a certain native plant, which he believes is normally distributed. He finds 25 mature plants and measures their heights, and determines the average height to be 10.2 cm (s = 1.2 cm). Construct a 96% confidence interval on the mean height of the plants. .<μ<.

A sample of 230 observations is selected from a normal population with a population standard deviation of 22. The sample mean is 17. a) Determine the standard error of the mean. (Round your answer to 3 decimal places.)     b) Determine the 95% confidence interval for the population mean. (Use z Distribution Table.) (Round your answers to 3 decimal places.) confidence interval _____________ and______________

Given the population mean hypothesis H0: μ = 150 and H1: μ ≠ 150 ​identify the the type of test distribution. ​(A) ​Right-tail test ​(B) ​Two-tail test ​(C) ​Left-tail test ​(D) ​None of these

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1) Asshme that adults have IQ scores that are normally distributed with a mean of 103.1 and a standard deviation 15.6. Find the first quartile Q1, which is the IQ score separating the bottom 25% from the top 75%.(Draw a graph) The first quartile is______(round one decimal as needed) 2)Assume that adults have IQ scores that are normally distributed with a mean of 99.2 and a standard deviation of 21.9. Find the probability that a randomly selected adult has an IQ greater than 136.3.(Draw a graph) The probability that a randomly selected adult from this group has an IQ greater than 136.3 is_____(Round to 4 decimal places as needed)