Use the sample information x= 43, o= 3, n= 13 to calculate the following confidence intervals for u assuming the sample is from a  a. 90 percent  confidence. (Round your answers to 4 decimal places.) The 90% confidence interval is from_____to____ b. 95 percent confidence. (Round your answers to 4 decimal places. ) The 95% confidence interval is from____to____ c. 99 percent confidence. (Round your answers to 4 decimal places.).  The 99% confidence interval is from ____to ____

Use the given data to construct a confidence interval for the population proportion of the requested level.

In a survey, 23 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $47 and standard deviation of $9. Construct a confidence interval at a 80% confidence level.Give your answers to one decimal place.________ ± ________Interpret your confidence interval in the context of this problem.

Tina catches a 14-pound bass.  She does not know the population mean or standard deviation.  So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds.  Find the t and calculate a 95% (α = .05) confidence interval.

I collect a random sample of size n from a population and from the data collected compute a 90% confidence interval for the mean of the population. Which of the following would produce a wider confidence interval, based on these same data? Use a larger confidence level. Use a smaller confidence level. a b.

Which confidence interval would lead you to Fail to Reject H0? Group of answer choices Test value: 10 Confidence Interval: 13.1 – 15.1 Test value: 5 Confidence Interval: 5.6 – 6.9 Test value: 5 Confidence Interval: 4.5 – 6.3 Test value: 10 Confidence Interval: 9.2 – 9.8

If n = 580 and X = 464, construct a 90% confidence interval for the population proportion, p.Give your answers to three decimals______< p < ______

Out of 200 people sampled, 78 had dogs. Based on this, construct a 95% confidence interval for the true population proportion of people with dogs. give your answers as decimals to three places  ________ < p < _______

Use the sample information. X = 40, 0 = 4, and n= 20 to calculate the following confidence intervals assuming the sample is from a normal population. A.  90% confidence from____to____ (Round 4 decimal places.) B.  95% confidence interval is from_____to_____ (Round 4 decimal places.) C.  99% confidence interval is from______to_____ (Round 4 decimal places.) D.  Describe how the intervals change as you increase the confidence level. A.  The interval gets narrower as the confidence level increases B.  The interval gets wider as a confidence level decreases C.  The interval gets wider as a confidence level increases D.  The interval stays the same as the confidence level increases

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