are finding a 98% for pnysical therapy patients. The data below show the number of visits for 11 randomly selected physical therapy patients. Round answers to 3 decimal places where possible. 22 7 23 10 23 22 | 26 19 20 15 17 a. To compute the confidence interval use a t v distribution. b. With 98% confidence the population mean number of visits per physical therapy patient is between 8.83 and visits. c. If many groups of 11 randomly selected physical therapy patients are studied, then a different

Use the confidence interval to find the margin of error and the sample mean. (12, 20) O E = 4, X = 20 O E = 4, X = 16 OE 8, X = 12 O E= 8, x = 16

Use a t-distribution to find a confidence interval for the difference in means µå = µ₁ − µ2 using the relevant sample results from paired data. Assume the results come from random samples from populations that are approximately normally distributed, and that differences are computed using d = X1 X₂. A 95% confidence interval for μ using the paired data in the following table: Situation 1 Give the best estimate for Ma Case 1 2 3 4 5 6 7 8 77 79 95 62 71 72 85 91 Situation 2 86 85 89 77 78 60 87 92 the margin of error, and the confidence interval. Enter the exact answer for the best estimate, and round your answers for the margin of error and the confidence interval to two decimal places.

Need help please!

Please answer the question on the attachment.

A statistics practitioner took a random sample of 60 observations from a population whose standard deviation is 31 and computed the sample mean to be 106. For each confidence interval, enter your answer in the form (LCL, UCL). You must include the parentheses and the comma between the confidence limits.   A. Estimate the population mean with 95% confidence. Confidence Interval =  B. Estimate the population mean with 90% confidence. Confidence Interval =  C. Estimate the population mean with 99% confidence. Confidence Interval =

The data show the number of vacation days used in a recent year by a sample of 12 employees. 5 10 1 8 1 7 2 6 2 7 3 0 O a. Obtain the quartiles. b. Determine the interquartile range (IQR). c. Find the five-number summary. a. Obtain the quartiles. Q1 %D Q2 %3D Q3 (Type integers or decimals.) b. Determine the interquartile range. IQR = (Type an integer or a decimal.) c. Find the five-number summary. (Type integers or decimals. Use ascending order.)

Assume that population mean is to be estimated from the sample described. Use the sample results to approximate the margin of error and​ 95% confidence interval.   n=49​, x=55.1 ​seconds, s=4.8 seconds       The margin of error is nothing seconds.

You are a researcher studying a certain species of fish in a local lake.  You gather a random sample of 19 fish of this species and record the lengths (in centimeters) of the fish. The data is displayed in the table below.  Estimate the mean length of all fish of this type in the lake.  Use a 99% confidence level. 9.1 9 8.6 5.8 9.8 7.4 9.1 9.5 8.2 8.9 9.3 7.8 9 9.6 10.4 13.6 7.2 10.1 8.9   a)  Find the confidence interval:  b) What is the margin of error of your interval?  c) Interpret your 99% confidence interval in context

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.