The operations manager of a large production plant would like to estimate the average amount of time workers take to assemble a new electronic component. After observing a number of workers assembling similar devices, she guesses that the standard deviation is 6 minutes. How large a sample of workers should she take if she wishes to estimate the mean assembly time to within 17 seconds. Assume the confidence level to be 91.28%. Sample Size =

If n = 440 and X = 352, construct a 90% confidence interval for the population proportion, p.Give your answers to three decimals

You measure 24 turtles' weights, and find they have a mean weight of 34 ounces. Assume the population standard deviation is 11.7 ounces. Based on this, construct a 95% confidence interval for the true population mean turtle weight.

Marketing analysts for a juice manufacturer conducted a survey in a large town. They determined that the purchasing habits of consumers follow a normal distribution, with a standard deviation of 6 L of juice. A sample of 90 consumers showed a mean juice consumption of 25 L per household. Find a 90 and a 95% confidence interval for the true mean consumption.

Suppose a random sample of 50 basketball players have an average height of 78 inches. Also assume that the population standard deviation is 1.5 inches.   Find a 99% confidence interval for the population mean height.  Find a 95% confidence interval for the population mean height.  Find a 90% confidence interval for the population mean height.     Find an 80% confidence interval for the population mean height.

You measure 34 turtles' weights, and find they have a mean weight of 65 ounces. Assume the population standard deviation is 5.2 ounces. Based on this, what is the maximal margin of error associated with a 95% confidence interval for the true population mean turtle weight.

You measure 37 textbooks' weights, and find they have a mean weight of 71 ounces. Assume the population standard deviation is 14.1 ounces. Based on this, construct a 95% confidence interval for the true population mean textbook weight.

The operations manager of a large production plant would like to estimate the average amount of time workers take to assemble a new electronic component. After observing a number of workers assembling similar devices, she guesses that the standard deviation is 8 minutes. How large a sample of workers should she take if she wishes to estimate the mean assembly time to within 22 seconds. Assume the confidence level to be 95%.

Use the study below for Part A, Part B, and Part C. A soft drink company surveys 500 shoppers and finds that 61% of shoppers prefer diet soda to regular soda. Part A: With a confidence level of 90%, what is the margin of error? Show your work and round to the nearest hundredth.Part B: If the sample size would increase to 1,000 respondents while keeping the rest of the variables the same, what would happen to the margin of error?Part C: Support your answer to Part B by finding the margin of error if 1,000 shoppers were surveyed while keeping the rest of the variables the same. Show your

You measure 27dogs' weights, and find they have a mean weight of 63 ounces. Assume the population standard deviation is 6.1 ounces. Based on this, what is the maximal margin of error associated with a 95% confidence interval for the true population mean dog weight.